From 87834bab17e5f169053e72a4ae7aaa9d6a15c918 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Thu, 7 Nov 2024 15:19:24 +0900
Subject: [PATCH 01/16] =?UTF-8?q?=F0=9F=94=A7=20fix:=20socket=20=EA=B4=80?=
 =?UTF-8?q?=EB=A0=A8=20=EB=A1=9C=EC=A7=81=20=EC=88=98=EC=A0=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/app.module.ts                          |  4 +-
 .../index/interface/stock.index.interface.ts  |  7 ---
 BE/src/stock/index/stock.index.controller.ts  | 29 +++++++++++++
 BE/src/stock/index/stock.index.module.ts      |  3 +-
 BE/src/websocket/socket.module.ts             | 12 ++++++
 BE/src/websocket/socket.service.ts            | 43 +++----------------
 6 files changed, 51 insertions(+), 47 deletions(-)
 create mode 100644 BE/src/websocket/socket.module.ts

diff --git a/BE/src/app.module.ts b/BE/src/app.module.ts
index 36681ad9..28a931c8 100644
--- a/BE/src/app.module.ts
+++ b/BE/src/app.module.ts
@@ -11,6 +11,7 @@ import { SocketService } from './websocket/socket.service';
 import { SocketGateway } from './websocket/socket.gateway';
 import { StockTopfiveModule } from './stock/topfive/stock.topfive.module';
 import { KoreaInvestmentModule } from './koreaInvestment/korea.investment.module';
+import { SocketModule } from './websocket/socket.module';
 
 @Module({
   imports: [
@@ -30,8 +31,9 @@ import { KoreaInvestmentModule } from './koreaInvestment/korea.investment.module
     AuthModule,
     StockIndexModule,
     StockTopfiveModule,
+    SocketModule,
   ],
   controllers: [AppController],
-  providers: [AppService, SocketService, SocketGateway],
+  providers: [AppService],
 })
 export class AppModule {}
diff --git a/BE/src/stock/index/interface/stock.index.interface.ts b/BE/src/stock/index/interface/stock.index.interface.ts
index 48d5851b..93636c51 100644
--- a/BE/src/stock/index/interface/stock.index.interface.ts
+++ b/BE/src/stock/index/interface/stock.index.interface.ts
@@ -1,10 +1,3 @@
-export interface AccessTokenInterface {
-  access_token: string;
-  access_token_token_expired: string;
-  token_type: string;
-  expires_in: number;
-}
-
 export interface StockIndexChartInterface {
   output: StockIndexChartElementInterface[];
   rt_cd: string;
diff --git a/BE/src/stock/index/stock.index.controller.ts b/BE/src/stock/index/stock.index.controller.ts
index acc139b6..c44c29db 100644
--- a/BE/src/stock/index/stock.index.controller.ts
+++ b/BE/src/stock/index/stock.index.controller.ts
@@ -1,8 +1,10 @@
 import { Controller, Get } from '@nestjs/common';
 import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
+import { Cron } from '@nestjs/schedule';
 import { StockIndexService } from './stock.index.service';
 import { StockIndexResponseDto } from './dto/stock.index.response.dto';
 import { KoreaInvestmentService } from '../../koreaInvestment/korea.investment.service';
+import { SocketGateway } from '../../websocket/socket.gateway';
 
 @Controller('/api/stocks/index')
 @ApiTags('주가 지수 API')
@@ -10,6 +12,7 @@ export class StockIndexController {
   constructor(
     private readonly stockIndexService: StockIndexService,
     private readonly koreaInvestmentService: KoreaInvestmentService,
+    private readonly socketGateway: SocketGateway,
   ) {}
 
   @Get()
@@ -65,4 +68,30 @@ export class StockIndexController {
 
     return new StockIndexResponseDto(stockLists, stockValues);
   }
+
+  @Cron('*/1 9-16 * * 1-5')
+  async cronStockIndexLists() {
+    const accessToken = await this.koreaInvestmentService.getAccessToken();
+
+    const stockLists = await Promise.all([
+      this.stockIndexService.getDomesticStockIndexListByCode(
+        '0001',
+        accessToken,
+      ), // 코스피
+      this.stockIndexService.getDomesticStockIndexListByCode(
+        '1001',
+        accessToken,
+      ), // 코스닥
+      this.stockIndexService.getDomesticStockIndexListByCode(
+        '2001',
+        accessToken,
+      ), // 코스피200
+      this.stockIndexService.getDomesticStockIndexListByCode(
+        '3003',
+        accessToken,
+      ), // KSQ150
+    ]);
+
+    this.socketGateway.sendStockIndexListToClient(stockLists);
+  }
 }
diff --git a/BE/src/stock/index/stock.index.module.ts b/BE/src/stock/index/stock.index.module.ts
index 2a044bf5..1227e4f7 100644
--- a/BE/src/stock/index/stock.index.module.ts
+++ b/BE/src/stock/index/stock.index.module.ts
@@ -2,9 +2,10 @@ import { Module } from '@nestjs/common';
 import { StockIndexController } from './stock.index.controller';
 import { StockIndexService } from './stock.index.service';
 import { KoreaInvestmentModule } from '../../koreaInvestment/korea.investment.module';
+import { SocketModule } from '../../websocket/socket.module';
 
 @Module({
-  imports: [KoreaInvestmentModule],
+  imports: [KoreaInvestmentModule, SocketModule],
   controllers: [StockIndexController],
   providers: [StockIndexService],
   exports: [StockIndexService],
diff --git a/BE/src/websocket/socket.module.ts b/BE/src/websocket/socket.module.ts
new file mode 100644
index 00000000..7dad68a3
--- /dev/null
+++ b/BE/src/websocket/socket.module.ts
@@ -0,0 +1,12 @@
+import { Module } from '@nestjs/common';
+import { SocketService } from './socket.service';
+import { SocketGateway } from './socket.gateway';
+import { KoreaInvestmentModule } from '../koreaInvestment/korea.investment.module';
+
+@Module({
+  imports: [KoreaInvestmentModule],
+  controllers: [],
+  providers: [SocketService, SocketGateway],
+  exports: [SocketGateway],
+})
+export class SocketModule {}
diff --git a/BE/src/websocket/socket.service.ts b/BE/src/websocket/socket.service.ts
index 0970d7a7..543517c0 100644
--- a/BE/src/websocket/socket.service.ts
+++ b/BE/src/websocket/socket.service.ts
@@ -1,10 +1,7 @@
 import { Injectable, OnModuleInit } from '@nestjs/common';
 import { WebSocket } from 'ws';
-import { Cron } from '@nestjs/schedule';
 import { SocketGateway } from './socket.gateway';
 import { StockIndexValueElementDto } from '../stock/index/dto/stock.index.value.element.dto';
-import { StockIndexService } from '../stock/index/stock.index.service';
-import { KoreaInvestmentService } from '../koreaInvestment/korea.investment.service';
 
 @Injectable()
 export class SocketService implements OnModuleInit {
@@ -13,11 +10,7 @@ export class SocketService implements OnModuleInit {
     H0UPCNT0: this.handleStockIndexValue.bind(this),
   };
 
-  constructor(
-    private readonly stockIndexGateway: SocketGateway,
-    private readonly stockIndexService: StockIndexService,
-    private readonly koreaInvestmentService: KoreaInvestmentService,
-  ) {}
+  constructor(private readonly socketGateway: SocketGateway) {}
 
   async onModuleInit() {
     const socketConnectionKey = await this.getSocketConnectionKey();
@@ -43,35 +36,9 @@ export class SocketService implements OnModuleInit {
     };
   }
 
-  @Cron('*/5 9-16 * * 1-5')
-  async cronStockIndexLists() {
-    const accessToken = await this.koreaInvestmentService.getAccessToken();
-
-    const stockLists = await Promise.all([
-      this.stockIndexService.getDomesticStockIndexListByCode(
-        '0001',
-        accessToken,
-      ), // 코스피
-      this.stockIndexService.getDomesticStockIndexListByCode(
-        '1001',
-        accessToken,
-      ), // 코스닥
-      this.stockIndexService.getDomesticStockIndexListByCode(
-        '2001',
-        accessToken,
-      ), // 코스피200
-      this.stockIndexService.getDomesticStockIndexListByCode(
-        '3003',
-        accessToken,
-      ), // KSQ150
-    ]);
-
-    this.stockIndexGateway.sendStockIndexListToClient(stockLists);
-  }
-
   private handleStockIndexValue(responseData: string) {
     const responseList = responseData.split('^');
-    this.stockIndexGateway.sendStockIndexValueToClient(
+    this.socketGateway.sendStockIndexValueToClient(
       new StockIndexValueElementDto(
         responseList[0],
         responseList[2],
@@ -83,7 +50,7 @@ export class SocketService implements OnModuleInit {
   }
 
   private async getSocketConnectionKey() {
-    const url = 'https://openapi.koreainvestment.com:9443/oauth2/Approval';
+    const url = `${process.env.KOREA_INVESTMENT_BASE_URL}/oauth2/Approval`;
 
     const response = await fetch(url, {
       method: 'POST',
@@ -92,8 +59,8 @@ export class SocketService implements OnModuleInit {
       },
       body: JSON.stringify({
         grant_type: 'client_credentials',
-        appkey: process.env.APP_KEY,
-        secretkey: process.env.APP_SECRET,
+        appkey: process.env.KOREA_INVESTMENT_APP_KEY,
+        secretkey: process.env.KOREA_INVESTMENT_APP_SECRET,
       }),
     });
     const result: SocketConnectTokenInterface = await response.json();

From cf81c6ec256f5cea231e8b519a51b060b96caf34 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Thu, 7 Nov 2024 15:25:15 +0900
Subject: [PATCH 02/16] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20refactor:=20?=
 =?UTF-8?q?=ED=95=84=EC=9A=94=EC=97=86=EB=8A=94=20import=20=EC=82=AD?=
 =?UTF-8?q?=EC=A0=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/app.module.ts                         | 2 --
 BE/src/stock/index/stock.index.controller.ts | 2 +-
 BE/src/websocket/socket.module.ts            | 3 +--
 3 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/BE/src/app.module.ts b/BE/src/app.module.ts
index 28a931c8..fbef051f 100644
--- a/BE/src/app.module.ts
+++ b/BE/src/app.module.ts
@@ -7,8 +7,6 @@ import { AppService } from './app.service';
 import { AuthModule } from './auth/auth.module';
 import { User } from './auth/user.entity';
 import { StockIndexModule } from './stock/index/stock.index.module';
-import { SocketService } from './websocket/socket.service';
-import { SocketGateway } from './websocket/socket.gateway';
 import { StockTopfiveModule } from './stock/topfive/stock.topfive.module';
 import { KoreaInvestmentModule } from './koreaInvestment/korea.investment.module';
 import { SocketModule } from './websocket/socket.module';
diff --git a/BE/src/stock/index/stock.index.controller.ts b/BE/src/stock/index/stock.index.controller.ts
index c44c29db..c3ddce59 100644
--- a/BE/src/stock/index/stock.index.controller.ts
+++ b/BE/src/stock/index/stock.index.controller.ts
@@ -69,7 +69,7 @@ export class StockIndexController {
     return new StockIndexResponseDto(stockLists, stockValues);
   }
 
-  @Cron('*/1 9-16 * * 1-5')
+  @Cron('*/5 9-16 * * 1-5')
   async cronStockIndexLists() {
     const accessToken = await this.koreaInvestmentService.getAccessToken();
 
diff --git a/BE/src/websocket/socket.module.ts b/BE/src/websocket/socket.module.ts
index 7dad68a3..4e9e2eb2 100644
--- a/BE/src/websocket/socket.module.ts
+++ b/BE/src/websocket/socket.module.ts
@@ -1,10 +1,9 @@
 import { Module } from '@nestjs/common';
 import { SocketService } from './socket.service';
 import { SocketGateway } from './socket.gateway';
-import { KoreaInvestmentModule } from '../koreaInvestment/korea.investment.module';
 
 @Module({
-  imports: [KoreaInvestmentModule],
+  imports: [],
   controllers: [],
   providers: [SocketService, SocketGateway],
   exports: [SocketGateway],

From 89420d7b4ede7af079c74d8c481399cd8d1efaef Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Thu, 7 Nov 2024 16:03:14 +0900
Subject: [PATCH 03/16] =?UTF-8?q?=F0=9F=94=A7=20fix:=20=EC=A3=BC=EA=B0=80?=
 =?UTF-8?q?=20=EC=A7=80=EC=88=98=20API=20response=20=ED=98=95=EC=8B=9D=20?=
 =?UTF-8?q?=EB=B3=80=EA=B2=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../index/dto/stock.index.response.dto.ts     | 33 ++++---
 .../dto/stock.index.response.element.dto.ts   | 16 +++
 BE/src/stock/index/stock.index.controller.ts  | 97 ++++++++++++-------
 3 files changed, 94 insertions(+), 52 deletions(-)
 create mode 100644 BE/src/stock/index/dto/stock.index.response.element.dto.ts

diff --git a/BE/src/stock/index/dto/stock.index.response.dto.ts b/BE/src/stock/index/dto/stock.index.response.dto.ts
index 358266a5..7f26af32 100644
--- a/BE/src/stock/index/dto/stock.index.response.dto.ts
+++ b/BE/src/stock/index/dto/stock.index.response.dto.ts
@@ -1,25 +1,28 @@
 import { ApiProperty } from '@nestjs/swagger';
-import { StockIndexListElementDto } from './stock.index.list.element.dto';
-import { StockIndexValueElementDto } from './stock.index.value.element.dto';
+import { StockIndexResponseElementDto } from './stock.index.response.element.dto';
 
 export class StockIndexResponseDto {
-  constructor(
-    indexList: StockIndexListElementDto[],
-    indexValue: StockIndexValueElementDto[],
-  ) {
-    this.indexList = indexList;
-    this.indexValue = indexValue;
-  }
+  @ApiProperty({
+    description: '코스피 지수',
+    type: StockIndexResponseElementDto,
+  })
+  KOSPI: StockIndexResponseElementDto;
+
+  @ApiProperty({
+    description: '코스닥 지수',
+    type: StockIndexResponseElementDto,
+  })
+  KOSDAQ: StockIndexResponseElementDto;
 
   @ApiProperty({
-    description: '주가 지수 차트 정보 (코스피, 코스닥, 코스피200, KSQ150)',
-    type: [StockIndexListElementDto],
+    description: '코스피200 지수',
+    type: StockIndexResponseElementDto,
   })
-  indexList: StockIndexListElementDto[];
+  KOSPI200: StockIndexResponseElementDto;
 
   @ApiProperty({
-    description: '주가 지수 실시간 값 정보 (코스피, 코스닥, 코스피200, KSQ150)',
-    type: [StockIndexValueElementDto],
+    description: 'KSQ150 지수',
+    type: StockIndexResponseElementDto,
   })
-  indexValue: StockIndexValueElementDto[];
+  KSQ150: StockIndexResponseElementDto;
 }
diff --git a/BE/src/stock/index/dto/stock.index.response.element.dto.ts b/BE/src/stock/index/dto/stock.index.response.element.dto.ts
new file mode 100644
index 00000000..7ce0ef1a
--- /dev/null
+++ b/BE/src/stock/index/dto/stock.index.response.element.dto.ts
@@ -0,0 +1,16 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { StockIndexValueElementDto } from './stock.index.value.element.dto';
+import { StockIndexListElementDto } from './stock.index.list.element.dto';
+
+export class StockIndexResponseElementDto {
+  @ApiProperty({
+    description: '코스피: 0001, 코스닥: 1001, 코스피200: 2001, KSQ150: 3003',
+  })
+  code: string;
+
+  @ApiProperty({ description: '실시간 값', type: StockIndexValueElementDto })
+  value: StockIndexValueElementDto;
+
+  @ApiProperty({ description: '실시간 차트', type: StockIndexListElementDto })
+  chart: StockIndexListElementDto;
+}
diff --git a/BE/src/stock/index/stock.index.controller.ts b/BE/src/stock/index/stock.index.controller.ts
index c3ddce59..949df5a5 100644
--- a/BE/src/stock/index/stock.index.controller.ts
+++ b/BE/src/stock/index/stock.index.controller.ts
@@ -28,45 +28,68 @@ export class StockIndexController {
   async getStockIndex() {
     const accessToken = await this.koreaInvestmentService.getAccessToken();
 
-    const stockLists = await Promise.all([
-      this.stockIndexService.getDomesticStockIndexListByCode(
-        '0001',
-        accessToken,
-      ), // 코스피
-      this.stockIndexService.getDomesticStockIndexListByCode(
-        '1001',
-        accessToken,
-      ), // 코스닥
-      this.stockIndexService.getDomesticStockIndexListByCode(
-        '2001',
-        accessToken,
-      ), // 코스피200
-      this.stockIndexService.getDomesticStockIndexListByCode(
-        '3003',
-        accessToken,
-      ), // KSQ150
-    ]);
+    const [kospiChart, kosdaqChart, kospi200Chart, ksq150Chart] =
+      await Promise.all([
+        this.stockIndexService.getDomesticStockIndexListByCode(
+          '0001',
+          accessToken,
+        ), // 코스피
+        this.stockIndexService.getDomesticStockIndexListByCode(
+          '1001',
+          accessToken,
+        ), // 코스닥
+        this.stockIndexService.getDomesticStockIndexListByCode(
+          '2001',
+          accessToken,
+        ), // 코스피200
+        this.stockIndexService.getDomesticStockIndexListByCode(
+          '3003',
+          accessToken,
+        ), // KSQ150
+      ]);
 
-    const stockValues = await Promise.all([
-      this.stockIndexService.getDomesticStockIndexValueByCode(
-        '0001',
-        accessToken,
-      ), // 코스피
-      this.stockIndexService.getDomesticStockIndexValueByCode(
-        '1001',
-        accessToken,
-      ), // 코스닥
-      this.stockIndexService.getDomesticStockIndexValueByCode(
-        '2001',
-        accessToken,
-      ), // 코스피200
-      this.stockIndexService.getDomesticStockIndexValueByCode(
-        '3003',
-        accessToken,
-      ), // KSQ150
-    ]);
+    const [kospiValue, kosdaqValue, kospi200Value, ksq150Value] =
+      await Promise.all([
+        this.stockIndexService.getDomesticStockIndexValueByCode(
+          '0001',
+          accessToken,
+        ), // 코스피
+        this.stockIndexService.getDomesticStockIndexValueByCode(
+          '1001',
+          accessToken,
+        ), // 코스닥
+        this.stockIndexService.getDomesticStockIndexValueByCode(
+          '2001',
+          accessToken,
+        ), // 코스피200
+        this.stockIndexService.getDomesticStockIndexValueByCode(
+          '3003',
+          accessToken,
+        ), // KSQ150
+      ]);
 
-    return new StockIndexResponseDto(stockLists, stockValues);
+    const stockIndexResponse = new StockIndexResponseDto();
+    stockIndexResponse.KOSPI = {
+      code: '0001',
+      value: kospiValue,
+      chart: kospiChart,
+    };
+    stockIndexResponse.KOSDAQ = {
+      code: '1001',
+      value: kosdaqValue,
+      chart: kosdaqChart,
+    };
+    stockIndexResponse.KOSPI200 = {
+      code: '2001',
+      value: kospi200Value,
+      chart: kospi200Chart,
+    };
+    stockIndexResponse.KSQ150 = {
+      code: '3003',
+      value: ksq150Value,
+      chart: ksq150Chart,
+    };
+    return stockIndexResponse;
   }
 
   @Cron('*/5 9-16 * * 1-5')

From 3d36bce6d1f6d9883bdee0aa2cb12a6a99e2bb94 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Thu, 7 Nov 2024 17:05:11 +0900
Subject: [PATCH 04/16] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20refactor:=20fetch=20?=
 =?UTF-8?q?API=20axios=EB=A1=9C=20=EB=AA=A8=EB=91=90=20=EB=B3=80=EA=B2=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/stock/index/stock.index.service.ts     | 64 +++++++++++--------
 .../websocket/interface/socket.interface.ts   |  3 +
 BE/src/websocket/socket.service.ts            | 26 +++-----
 3 files changed, 48 insertions(+), 45 deletions(-)
 create mode 100644 BE/src/websocket/interface/socket.interface.ts

diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index f466a461..3b355f35 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -1,4 +1,5 @@
 import { Injectable } from '@nestjs/common';
+import axios from 'axios';
 import { StockIndexListChartElementDto } from './dto/stock.index.list.chart.element.dto';
 import { StockIndexListElementDto } from './dto/stock.index.list.element.dto';
 import { StockIndexValueElementDto } from './dto/stock.index.value.element.dto';
@@ -10,22 +11,26 @@ import {
 @Injectable()
 export class StockIndexService {
   async getDomesticStockIndexListByCode(code: string, accessToken: string) {
-    const url = `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/quotations/inquire-index-timeprice`;
-    const queryParams = `?FID_INPUT_HOUR_1=300&FID_COND_MRKT_DIV_CODE=U&FID_INPUT_ISCD=${code}`;
-
-    const response = await fetch(url + queryParams, {
-      method: 'GET',
-      headers: {
-        'content-type': 'application/json; charset=utf-8',
-        authorization: `Bearer ${accessToken}`,
-        appkey: process.env.KOREA_INVESTMENT_APP_KEY,
-        appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
-        tr_id: 'FHPUP02110200',
-        custtype: 'P',
+    const response = await axios.get<StockIndexChartInterface>(
+      `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/quotations/inquire-index-timeprice`,
+      {
+        headers: {
+          'content-type': 'application/json; charset=utf-8',
+          authorization: `Bearer ${accessToken}`,
+          appkey: process.env.KOREA_INVESTMENT_APP_KEY,
+          appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
+          tr_id: 'FHPUP02110200',
+          custtype: 'P',
+        },
+        params: {
+          fid_input_hour_1: 300,
+          fid_cond_mrkt_div_code: 'U',
+          fid_input_iscd: code,
+        },
       },
-    });
+    );
 
-    const result: StockIndexChartInterface = await response.json();
+    const result = response.data;
     if (result.rt_cd !== '0') throw new Error('유효하지 않은 토큰');
 
     return new StockIndexListElementDto(
@@ -40,22 +45,25 @@ export class StockIndexService {
   }
 
   async getDomesticStockIndexValueByCode(code: string, accessToken: string) {
-    const url = `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/quotations/inquire-index-price`;
-    const queryParams = `?FID_COND_MRKT_DIV_CODE=U&FID_INPUT_ISCD=${code}`;
-
-    const response = await fetch(url + queryParams, {
-      method: 'GET',
-      headers: {
-        'content-type': 'application/json; charset=utf-8',
-        authorization: `Bearer ${accessToken}`,
-        appkey: process.env.KOREA_INVESTMENT_APP_KEY,
-        appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
-        tr_id: 'FHPUP02100000',
-        custtype: 'P',
+    const response = await axios.get<StockIndexValueInterface>(
+      `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/quotations/inquire-index-price`,
+      {
+        headers: {
+          'content-type': 'application/json; charset=utf-8',
+          authorization: `Bearer ${accessToken}`,
+          appkey: process.env.KOREA_INVESTMENT_APP_KEY,
+          appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
+          tr_id: 'FHPUP02100000',
+          custtype: 'P',
+        },
+        params: {
+          fid_cond_mrkt_div_code: 'U',
+          fid_input_iscd: code,
+        },
       },
-    });
+    );
 
-    const result: StockIndexValueInterface = await response.json();
+    const result = response.data;
     return new StockIndexValueElementDto(
       code,
       result.output.bstp_nmix_prpr,
diff --git a/BE/src/websocket/interface/socket.interface.ts b/BE/src/websocket/interface/socket.interface.ts
new file mode 100644
index 00000000..d9a6aabb
--- /dev/null
+++ b/BE/src/websocket/interface/socket.interface.ts
@@ -0,0 +1,3 @@
+export interface SocketConnectTokenInterface {
+  approval_key: string;
+}
diff --git a/BE/src/websocket/socket.service.ts b/BE/src/websocket/socket.service.ts
index 543517c0..0c25bf03 100644
--- a/BE/src/websocket/socket.service.ts
+++ b/BE/src/websocket/socket.service.ts
@@ -1,7 +1,9 @@
 import { Injectable, OnModuleInit } from '@nestjs/common';
 import { WebSocket } from 'ws';
+import axios from 'axios';
 import { SocketGateway } from './socket.gateway';
 import { StockIndexValueElementDto } from '../stock/index/dto/stock.index.value.element.dto';
+import { SocketConnectTokenInterface } from './interface/socket.interface';
 
 @Injectable()
 export class SocketService implements OnModuleInit {
@@ -50,20 +52,16 @@ export class SocketService implements OnModuleInit {
   }
 
   private async getSocketConnectionKey() {
-    const url = `${process.env.KOREA_INVESTMENT_BASE_URL}/oauth2/Approval`;
-
-    const response = await fetch(url, {
-      method: 'POST',
-      headers: {
-        'Content-Type': 'application/json; charset=UTF-8',
-      },
-      body: JSON.stringify({
+    const response = await axios.post<SocketConnectTokenInterface>(
+      `${process.env.KOREA_INVESTMENT_BASE_URL}/oauth2/Approval`,
+      {
         grant_type: 'client_credentials',
         appkey: process.env.KOREA_INVESTMENT_APP_KEY,
         secretkey: process.env.KOREA_INVESTMENT_APP_SECRET,
-      }),
-    });
-    const result: SocketConnectTokenInterface = await response.json();
+      },
+    );
+
+    const result = response.data;
     return result.approval_key;
   }
 
@@ -86,9 +84,3 @@ export class SocketService implements OnModuleInit {
     );
   }
 }
-
-// interfaces
-
-interface SocketConnectTokenInterface {
-  approval_key: string;
-}

From bf91271a2d6d268b65ef4ea25ef7171eb5ce703b Mon Sep 17 00:00:00 2001
From: JIN <o3ouuu@inu.ac.kr>
Date: Thu, 7 Nov 2024 17:07:23 +0900
Subject: [PATCH 05/16] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20refactor:=20?=
 =?UTF-8?q?=ED=99=98=EA=B2=BD=EB=B3=80=EC=88=98=20=EA=B0=80=EC=A7=80?=
 =?UTF-8?q?=EA=B3=A0=20=EC=98=A4=EB=8A=94=20=EB=B0=A9=EC=8B=9D=20=EB=B3=80?=
 =?UTF-8?q?=EA=B2=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/stock/topfive/stock.topfive.service.ts | 22 ++++---------------
 1 file changed, 4 insertions(+), 18 deletions(-)

diff --git a/BE/src/stock/topfive/stock.topfive.service.ts b/BE/src/stock/topfive/stock.topfive.service.ts
index 806f3459..fd0a2442 100644
--- a/BE/src/stock/topfive/stock.topfive.service.ts
+++ b/BE/src/stock/topfive/stock.topfive.service.ts
@@ -1,6 +1,5 @@
 import axios from 'axios';
 import { Injectable, Logger } from '@nestjs/common';
-import { ConfigService } from '@nestjs/config';
 import { StockRankigRequestDto } from './dto/stock-ranking-request.dto';
 import { StockRankingResponseDto } from './dto/stock-ranking-response.dto';
 import { StockRankingDataDto } from './dto/stock-ranking-data.dto';
@@ -13,37 +12,24 @@ import { KoreaInvestmentService } from '../../koreaInvestment/korea.investment.s
 
 @Injectable()
 export class StockTopfiveService {
-  private readonly koreaInvestmentConfig: {
-    appKey: string;
-    appSecret: string;
-    baseUrl: string;
-  };
-
   private readonly logger = new Logger();
 
   constructor(
-    private readonly config: ConfigService,
     private readonly koreaInvestmentService: KoreaInvestmentService,
-  ) {
-    this.koreaInvestmentConfig = {
-      appKey: this.config.get<string>('KOREA_INVESTMENT_APP_KEY'),
-      appSecret: this.config.get<string>('KOREA_INVESTMENT_APP_SECRET'),
-      baseUrl: this.config.get<string>('KOREA_INVESTMENT_BASE_URL'),
-    };
-  }
+  ) {}
 
   private async requestApi(params: StockRankigRequestDto) {
     try {
       const token = await this.koreaInvestmentService.getAccessToken();
 
       const response = await axios.get<StockApiResponse>(
-        `${this.koreaInvestmentConfig.baseUrl}/uapi/domestic-stock/v1/ranking/fluctuation`,
+        `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/ranking/fluctuation`,
         {
           headers: {
             'content-type': 'application/json; charset=utf-8',
             authorization: `Bearer ${token}`,
-            appkey: this.koreaInvestmentConfig.appKey,
-            appsecret: this.koreaInvestmentConfig.appSecret,
+            appkey: process.env.KOREA_INVESTMENT_APP_KEY,
+            appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
             tr_id: 'FHPST01700000',
             custtype: 'P',
           },

From bb3cdbe9e7ae907dfc68eb29438d14cf457618ba Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Thu, 7 Nov 2024 17:23:19 +0900
Subject: [PATCH 06/16] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20refactor:=20stock=20?=
 =?UTF-8?q?index=20=EA=B4=80=EB=A0=A8=20API=20=EC=9A=94=EC=B2=AD=20?=
 =?UTF-8?q?=EB=A1=9C=EC=A7=81=20=ED=95=A8=EC=88=98=20=EB=B6=84=EB=A6=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/stock/index/stock.index.service.ts | 64 +++++++++++++++--------
 1 file changed, 43 insertions(+), 21 deletions(-)

diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index 3b355f35..e0690231 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -11,6 +11,43 @@ import {
 @Injectable()
 export class StockIndexService {
   async getDomesticStockIndexListByCode(code: string, accessToken: string) {
+    const result = await this.requestDomesticStockIndexListApi(
+      code,
+      accessToken,
+    );
+
+    if (result.rt_cd !== '0') throw new Error('유효하지 않은 토큰');
+
+    return new StockIndexListElementDto(
+      code,
+      result.output.map((element) => {
+        return new StockIndexListChartElementDto(
+          element.bsop_hour,
+          element.bstp_nmix_prpr,
+        );
+      }),
+    );
+  }
+
+  async getDomesticStockIndexValueByCode(code: string, accessToken: string) {
+    const result = await this.requestDomesticStockIndexValueApi(
+      code,
+      accessToken,
+    );
+
+    return new StockIndexValueElementDto(
+      code,
+      result.output.bstp_nmix_prpr,
+      result.output.bstp_nmix_prdy_vrss,
+      result.output.bstp_nmix_prdy_vrss,
+      result.output.prdy_vrss_sign,
+    );
+  }
+
+  private async requestDomesticStockIndexListApi(
+    code: string,
+    accessToken: string,
+  ) {
     const response = await axios.get<StockIndexChartInterface>(
       `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/quotations/inquire-index-timeprice`,
       {
@@ -30,21 +67,13 @@ export class StockIndexService {
       },
     );
 
-    const result = response.data;
-    if (result.rt_cd !== '0') throw new Error('유효하지 않은 토큰');
-
-    return new StockIndexListElementDto(
-      code,
-      result.output.map((element) => {
-        return new StockIndexListChartElementDto(
-          element.bsop_hour,
-          element.bstp_nmix_prpr,
-        );
-      }),
-    );
+    return response.data;
   }
 
-  async getDomesticStockIndexValueByCode(code: string, accessToken: string) {
+  private async requestDomesticStockIndexValueApi(
+    code: string,
+    accessToken: string,
+  ) {
     const response = await axios.get<StockIndexValueInterface>(
       `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/quotations/inquire-index-price`,
       {
@@ -63,13 +92,6 @@ export class StockIndexService {
       },
     );
 
-    const result = response.data;
-    return new StockIndexValueElementDto(
-      code,
-      result.output.bstp_nmix_prpr,
-      result.output.bstp_nmix_prdy_vrss,
-      result.output.bstp_nmix_prdy_vrss,
-      result.output.prdy_vrss_sign,
-    );
+    return response.data;
   }
 }

From edcb77919410eb0f04b335e294c77e6efd21af10 Mon Sep 17 00:00:00 2001
From: JIN <o3ouuu@inu.ac.kr>
Date: Thu, 7 Nov 2024 17:36:01 +0900
Subject: [PATCH 07/16] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20refactor:=20?=
 =?UTF-8?q?=EA=B3=B5=ED=86=B5=20=ED=95=A8=EC=88=98=20=EB=B6=84=EB=A6=AC=20?=
 =?UTF-8?q?=EB=B0=8F=20=EB=AA=85=ED=99=95=ED=95=9C=20=EC=9D=B4=EB=A6=84?=
 =?UTF-8?q?=EC=9C=BC=EB=A1=9C=20=EB=B3=80=EA=B2=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../topfive/dto/stock-ranking-request.dto.ts  |  2 +-
 BE/src/stock/topfive/stock.topfive.service.ts | 82 +++++++++----------
 BE/src/util/getFullURL.ts                     |  3 +
 BE/src/util/getHeader.ts                      | 10 +++
 4 files changed, 55 insertions(+), 42 deletions(-)
 create mode 100644 BE/src/util/getFullURL.ts
 create mode 100644 BE/src/util/getHeader.ts

diff --git a/BE/src/stock/topfive/dto/stock-ranking-request.dto.ts b/BE/src/stock/topfive/dto/stock-ranking-request.dto.ts
index 200c244d..2e9fc946 100644
--- a/BE/src/stock/topfive/dto/stock-ranking-request.dto.ts
+++ b/BE/src/stock/topfive/dto/stock-ranking-request.dto.ts
@@ -1,7 +1,7 @@
 /**
  * 등락률 API를 사용할 때 쿼리 파라미터로 사용할 요청값 DTO
  */
-export class StockRankigRequestDto {
+export class StockRankingQueryParameterDto {
   /**
    * 조건 시장 분류 코드
    * 'J' 주식
diff --git a/BE/src/stock/topfive/stock.topfive.service.ts b/BE/src/stock/topfive/stock.topfive.service.ts
index fd0a2442..48a7dff9 100644
--- a/BE/src/stock/topfive/stock.topfive.service.ts
+++ b/BE/src/stock/topfive/stock.topfive.service.ts
@@ -1,13 +1,15 @@
 import axios from 'axios';
 import { Injectable, Logger } from '@nestjs/common';
-import { StockRankigRequestDto } from './dto/stock-ranking-request.dto';
+import { StockRankingQueryParameterDto } from './dto/stock-ranking-request.dto';
 import { StockRankingResponseDto } from './dto/stock-ranking-response.dto';
 import { StockRankingDataDto } from './dto/stock-ranking-data.dto';
+import { MarketType } from '../enum/MarketType';
 import {
   StockApiOutputData,
   StockApiResponse,
 } from './interface/stock.topfive.interface';
-import { MarketType } from '../enum/MarketType';
+import { getHeader } from '../../util/getHeader';
+import { getFullURL } from '../../util/getFullURL';
 import { KoreaInvestmentService } from '../../koreaInvestment/korea.investment.service';
 
 @Injectable()
@@ -18,39 +20,18 @@ export class StockTopfiveService {
     private readonly koreaInvestmentService: KoreaInvestmentService,
   ) {}
 
-  private async requestApi(params: StockRankigRequestDto) {
+  private async requestApi(queryParams: StockRankingQueryParameterDto) {
     try {
-      const token = await this.koreaInvestmentService.getAccessToken();
+      const accessToken = await this.koreaInvestmentService.getAccessToken();
+      const headers = getHeader(accessToken, 'FHPST01700000');
+      const url = getFullURL('/uapi/domestic-stock/v1/ranking/fluctuation');
+      const params = this.getStockRankingParams(queryParams);
+
+      const response = await axios.get<StockApiResponse>(url, {
+        headers,
+        params,
+      });
 
-      const response = await axios.get<StockApiResponse>(
-        `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/ranking/fluctuation`,
-        {
-          headers: {
-            'content-type': 'application/json; charset=utf-8',
-            authorization: `Bearer ${token}`,
-            appkey: process.env.KOREA_INVESTMENT_APP_KEY,
-            appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
-            tr_id: 'FHPST01700000',
-            custtype: 'P',
-          },
-          params: {
-            fid_rsfl_rate2: '',
-            fid_cond_mrkt_div_code: params.fid_cond_mrkt_div_code,
-            fid_cond_scr_div_code: '20170',
-            fid_input_iscd: params.fid_input_iscd,
-            fid_rank_sort_cls_code: params.fid_rank_sort_cls_code,
-            fid_input_cnt_1: '0',
-            fid_prc_cls_code: '1',
-            fid_input_price_1: '',
-            fid_input_price_2: '',
-            fid_vol_cnt: '',
-            fid_trgt_cls_code: '0',
-            fid_trgt_exls_cls_code: '0',
-            fid_div_cls_code: '0',
-            fid_rsfl_rate1: '',
-          },
-        },
-      );
       return response.data;
     } catch (error) {
       this.logger.error('API Error Details:', {
@@ -66,33 +47,33 @@ export class StockTopfiveService {
 
   async getMarketRanking(marketType: MarketType) {
     try {
-      const params = new StockRankigRequestDto();
-      params.fid_cond_mrkt_div_code = 'J';
+      const queryParams = new StockRankingQueryParameterDto();
+      queryParams.fid_cond_mrkt_div_code = 'J';
 
       switch (marketType) {
         case MarketType.ALL:
-          params.fid_input_iscd = '0000';
+          queryParams.fid_input_iscd = '0000';
           break;
         case MarketType.KOSPI:
-          params.fid_input_iscd = '0001';
+          queryParams.fid_input_iscd = '0001';
           break;
         case MarketType.KOSDAQ:
-          params.fid_input_iscd = '1001';
+          queryParams.fid_input_iscd = '1001';
           break;
         case MarketType.KOSPI200:
-          params.fid_input_iscd = '2001';
+          queryParams.fid_input_iscd = '2001';
           break;
         default:
           break;
       }
 
       const highResponse = await this.requestApi({
-        ...params,
+        ...queryParams,
         fid_rank_sort_cls_code: '0',
       });
 
       const lowResponse = await this.requestApi({
-        ...params,
+        ...queryParams,
         fid_rank_sort_cls_code: '1',
       });
 
@@ -125,4 +106,23 @@ export class StockTopfiveService {
       return stockData;
     });
   }
+
+  private getStockRankingParams(params: StockRankingQueryParameterDto) {
+    return {
+      fid_rsfl_rate2: '',
+      fid_cond_mrkt_div_code: params.fid_cond_mrkt_div_code,
+      fid_cond_scr_div_code: '20170',
+      fid_input_iscd: params.fid_input_iscd,
+      fid_rank_sort_cls_code: params.fid_rank_sort_cls_code,
+      fid_input_cnt_1: '0',
+      fid_prc_cls_code: '1',
+      fid_input_price_1: '',
+      fid_input_price_2: '',
+      fid_vol_cnt: '',
+      fid_trgt_cls_code: '0',
+      fid_trgt_exls_cls_code: '0',
+      fid_div_cls_code: '0',
+      fid_rsfl_rate1: '',
+    };
+  }
 }
diff --git a/BE/src/util/getFullURL.ts b/BE/src/util/getFullURL.ts
new file mode 100644
index 00000000..da79427f
--- /dev/null
+++ b/BE/src/util/getFullURL.ts
@@ -0,0 +1,3 @@
+export const getFullURL = (url: string) => {
+  return `${process.env.KOREA_INVESTMENT_BASE_URL}${url}`;
+};
diff --git a/BE/src/util/getHeader.ts b/BE/src/util/getHeader.ts
new file mode 100644
index 00000000..1f63ee64
--- /dev/null
+++ b/BE/src/util/getHeader.ts
@@ -0,0 +1,10 @@
+export const getHeader = (accessToken: string, trId: string) => {
+  return {
+    'content-type': 'application/json; charset=utf-8',
+    authorization: `Bearer ${accessToken}`,
+    appkey: process.env.KOREA_INVESTMENT_APP_KEY,
+    appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
+    tr_id: trId,
+    custtype: 'P',
+  };
+};

From 379ffe6d13ea4eb2769ad0e749d41c8919b5a435 Mon Sep 17 00:00:00 2001
From: JIN <o3ouuu@inu.ac.kr>
Date: Thu, 7 Nov 2024 17:56:28 +0900
Subject: [PATCH 08/16] =?UTF-8?q?=F0=9F=92=A1=20comment:=20service=20?=
 =?UTF-8?q?=EB=A1=9C=EC=A7=81=20=ED=95=A8=EC=88=98=EB=B3=84=20=EC=A3=BC?=
 =?UTF-8?q?=EC=84=9D=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/stock/topfive/stock.topfive.service.ts | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/BE/src/stock/topfive/stock.topfive.service.ts b/BE/src/stock/topfive/stock.topfive.service.ts
index 48a7dff9..d8da1643 100644
--- a/BE/src/stock/topfive/stock.topfive.service.ts
+++ b/BE/src/stock/topfive/stock.topfive.service.ts
@@ -20,6 +20,13 @@ export class StockTopfiveService {
     private readonly koreaInvestmentService: KoreaInvestmentService,
   ) {}
 
+  /**
+   * @private 한국투자 Open API - [국내주식] 순위 분석 - 국내주식 등락률 순위 호출 함수
+   * @param {StockRankingQueryParameterDto} queryParams - API 요청 시 필요한 쿼리 파라미터 DTO
+   * @returns - 국내주식 등락률 데이터
+   *
+   * @author uuuo3o
+   */
   private async requestApi(queryParams: StockRankingQueryParameterDto) {
     try {
       const accessToken = await this.koreaInvestmentService.getAccessToken();
@@ -45,6 +52,13 @@ export class StockTopfiveService {
     }
   }
 
+  /**
+   * 국내주식 등락률 데이터 중 필요한 시장 종류 데이터를 반환하는 함수
+   * @param {MarketType} marketType - 시장 종류(ALL, KOSPI, KOSDAQ, KOSPI200)
+   * @returns - 상승율순, 하락율순 배열 데이터가 포함된 객체
+   *
+   * @author uuuo3o
+   */
   async getMarketRanking(marketType: MarketType) {
     try {
       const queryParams = new StockRankingQueryParameterDto();
@@ -94,6 +108,13 @@ export class StockTopfiveService {
     }
   }
 
+  /**
+   * @private API에서 받은 국내주식 등락률 데이터를 필요한 정보로 정제하는 함수
+   * @param {StockApiOutputData[]} stocks - API 응답에서 받은 원시 데이터 배열
+   * @returns - 필요한 정보만 추출한 데이터 배열
+   *
+   * @author uuuo3o
+   */
   private formatStockData(stocks: StockApiOutputData[]) {
     return stocks.slice(0, 5).map((stock) => {
       const stockData = new StockRankingDataDto();
@@ -107,6 +128,13 @@ export class StockTopfiveService {
     });
   }
 
+  /**
+   * @private 주식 순위 API 요청을 위한 쿼리 파라미터 객체 생성 함수
+   * @param {StockRankingQueryParameterDto} params - API 요청에 필요한 쿼리 파라미터 DTO
+   * @returns - API 요청에 필요한 쿼리 파라미터 객체
+   *
+   * @author uuuo3o
+   */
   private getStockRankingParams(params: StockRankingQueryParameterDto) {
     return {
       fid_rsfl_rate2: '',

From 2e10d75fe16e91771f8b728920edfbe8fff54866 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Thu, 7 Nov 2024 19:08:33 +0900
Subject: [PATCH 09/16] =?UTF-8?q?=E2=9C=85=20test:=20=EC=A3=BC=EA=B0=80=20?=
 =?UTF-8?q?=EC=A7=80=EC=88=98=20=EC=B0=A8=ED=8A=B8=20=EC=A1=B0=ED=9A=8C=20?=
 =?UTF-8?q?=ED=85=8C=EC=8A=A4=ED=8A=B8=20=EC=BD=94=EB=93=9C=20=EC=9E=91?=
 =?UTF-8?q?=EC=84=B1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/stock/index/stock.index.service.ts     |  3 +-
 .../mockdata/stock.index.list.mockdata.ts     | 29 +++++++++++
 .../stock/index/stock.index.list.e2e-spec.ts  | 49 +++++++++++++++++++
 3 files changed, 80 insertions(+), 1 deletion(-)
 create mode 100644 BE/test/stock/index/mockdata/stock.index.list.mockdata.ts
 create mode 100644 BE/test/stock/index/stock.index.list.e2e-spec.ts

diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index e0690231..1a7b500a 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -16,7 +16,8 @@ export class StockIndexService {
       accessToken,
     );
 
-    if (result.rt_cd !== '0') throw new Error('유효하지 않은 토큰');
+    if (result.rt_cd !== '0')
+      throw new Error('데이터를 정상적으로 조회하지 못했습니다.');
 
     return new StockIndexListElementDto(
       code,
diff --git a/BE/test/stock/index/mockdata/stock.index.list.mockdata.ts b/BE/test/stock/index/mockdata/stock.index.list.mockdata.ts
new file mode 100644
index 00000000..7fb74649
--- /dev/null
+++ b/BE/test/stock/index/mockdata/stock.index.list.mockdata.ts
@@ -0,0 +1,29 @@
+export const STOCK_INDEX_LIST_MOCK = {
+  VALID_DATA: {
+    data: {
+      output: [
+        {
+          bsop_hour: '100600',
+          bstp_nmix_prpr: '916.77',
+          bstp_nmix_prdy_vrss: '11.27',
+          prdy_vrss_sign: '2',
+          bstp_nmix_prdy_ctrt: '1.24',
+          acml_tr_pbmn: '3839797',
+          acml_vol: '313374',
+          cntg_vol: '870',
+        },
+      ],
+      rt_cd: '0',
+      msg_cd: 'MCA00000',
+      msg1: '정상처리 되었습니다.',
+    },
+  },
+  INVALID_DATA: {
+    data: {
+      output: [],
+      rt_cd: '1',
+      msg_cd: 'MCA00000',
+      msg1: '유효하지 않은 토큰입니다.',
+    },
+  },
+};
diff --git a/BE/test/stock/index/stock.index.list.e2e-spec.ts b/BE/test/stock/index/stock.index.list.e2e-spec.ts
new file mode 100644
index 00000000..6079f011
--- /dev/null
+++ b/BE/test/stock/index/stock.index.list.e2e-spec.ts
@@ -0,0 +1,49 @@
+import { Test } from '@nestjs/testing';
+import axios from 'axios';
+import { StockIndexService } from '../../../src/stock/index/stock.index.service';
+import { STOCK_INDEX_LIST_MOCK } from './mockdata/stock.index.list.mockdata';
+
+jest.mock('axios');
+
+describe('stock index list test', () => {
+  let stockIndexService: StockIndexService;
+
+  beforeEach(async () => {
+    const module = await Test.createTestingModule({
+      providers: [StockIndexService],
+    }).compile();
+
+    stockIndexService = module.get(StockIndexService);
+  });
+
+  it('주가 지수 API에서 정상적인 데이터를 조회한 경우, 형식에 맞춰 정상적으로 반환한다.', async () => {
+    (axios.get as jest.Mock).mockResolvedValue(
+      STOCK_INDEX_LIST_MOCK.VALID_DATA,
+    );
+
+    expect(
+      await stockIndexService.getDomesticStockIndexListByCode(
+        'code',
+        'accessToken',
+      ),
+    ).toEqual({
+      code: 'code',
+      chart: [
+        {
+          time: STOCK_INDEX_LIST_MOCK.VALID_DATA.data.output[0].bsop_hour,
+          value: STOCK_INDEX_LIST_MOCK.VALID_DATA.data.output[0].bstp_nmix_prpr,
+        },
+      ],
+    });
+  });
+
+  it('주가 지수 API에서 데이터를 조회하지 못한 경우, 에러를 발생시킨다.', async () => {
+    (axios.get as jest.Mock).mockResolvedValue(
+      STOCK_INDEX_LIST_MOCK.INVALID_DATA,
+    );
+
+    await expect(
+      stockIndexService.getDomesticStockIndexListByCode('code', 'accessToken'),
+    ).rejects.toThrow('데이터를 정상적으로 조회하지 못했습니다.');
+  });
+});

From 9d8ff3320736db17694540345876d1f1fb83d1bf Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Thu, 7 Nov 2024 19:19:22 +0900
Subject: [PATCH 10/16] =?UTF-8?q?=E2=9C=85=20test:=20=EC=A3=BC=EA=B0=80=20?=
 =?UTF-8?q?=EC=A7=80=EC=88=98=20=EA=B0=92=20=EC=A1=B0=ED=9A=8C=20=ED=85=8C?=
 =?UTF-8?q?=EC=8A=A4=ED=8A=B8=20=EC=BD=94=EB=93=9C=20=EC=9E=91=EC=84=B1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/stock/index/stock.index.service.ts     |  5 +-
 .../mockdata/stock.index.value.mockdata.ts    | 55 +++++++++++++++++++
 .../stock/index/stock.index.list.e2e-spec.ts  |  4 +-
 .../stock/index/stock.index.value.e2e-spec.ts | 48 ++++++++++++++++
 4 files changed, 109 insertions(+), 3 deletions(-)
 create mode 100644 BE/test/stock/index/mockdata/stock.index.value.mockdata.ts
 create mode 100644 BE/test/stock/index/stock.index.value.e2e-spec.ts

diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index 1a7b500a..875be12d 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -36,11 +36,14 @@ export class StockIndexService {
       accessToken,
     );
 
+    if (result.rt_cd !== '0')
+      throw new Error('데이터를 정상적으로 조회하지 못했습니다.');
+
     return new StockIndexValueElementDto(
       code,
       result.output.bstp_nmix_prpr,
       result.output.bstp_nmix_prdy_vrss,
-      result.output.bstp_nmix_prdy_vrss,
+      result.output.bstp_nmix_prdy_ctrt,
       result.output.prdy_vrss_sign,
     );
   }
diff --git a/BE/test/stock/index/mockdata/stock.index.value.mockdata.ts b/BE/test/stock/index/mockdata/stock.index.value.mockdata.ts
new file mode 100644
index 00000000..0faa49d9
--- /dev/null
+++ b/BE/test/stock/index/mockdata/stock.index.value.mockdata.ts
@@ -0,0 +1,55 @@
+export const STOCK_INDEX_VALUE_MOCK = {
+  VALID_DATA: {
+    data: {
+      output: {
+        bstp_nmix_prpr: '857.60',
+        bstp_nmix_prdy_vrss: '-1.61',
+        prdy_vrss_sign: '5',
+        bstp_nmix_prdy_ctrt: '-0.19',
+        acml_vol: '1312496',
+        prdy_vol: '1222188',
+        acml_tr_pbmn: '11507962',
+        prdy_tr_pbmn: '11203385',
+        bstp_nmix_oprc: '863.69',
+        prdy_nmix_vrss_nmix_oprc: '4.48',
+        oprc_vrss_prpr_sign: '2',
+        bstp_nmix_oprc_prdy_ctrt: '0.52',
+        bstp_nmix_hgpr: '864.24',
+        prdy_nmix_vrss_nmix_hgpr: '5.03',
+        hgpr_vrss_prpr_sign: '2',
+        bstp_nmix_hgpr_prdy_ctrt: '0.59',
+        bstp_nmix_lwpr: '854.72',
+        prdy_clpr_vrss_lwpr: '-4.49',
+        lwpr_vrss_prpr_sign: '5',
+        prdy_clpr_vrss_lwpr_rate: '-0.52',
+        ascn_issu_cnt: '828',
+        uplm_issu_cnt: '5',
+        stnr_issu_cnt: '94',
+        down_issu_cnt: '716',
+        lslm_issu_cnt: '1',
+        dryy_bstp_nmix_hgpr: '890.06',
+        dryy_hgpr_vrss_prpr_rate: '3.65',
+        dryy_bstp_nmix_hgpr_date: '20240109',
+        dryy_bstp_nmix_lwpr: '786.28',
+        dryy_lwpr_vrss_prpr_rate: '-9.07',
+        dryy_bstp_nmix_lwpr_date: '20240201',
+        total_askp_rsqn: '24146999',
+        total_bidp_rsqn: '40450437',
+        seln_rsqn_rate: '37.38',
+        shnu_rsqn_rate: '62.62',
+        ntby_rsqn: '16303438',
+      },
+      rt_cd: '0',
+      msg_cd: 'MCA00000',
+      msg1: '정상처리 되었습니다.',
+    },
+  },
+  INVALID_DATA: {
+    data: {
+      output: {},
+      rt_cd: '1',
+      msg_cd: 'MCA00000',
+      msg1: '유효하지 않은 토큰입니다.',
+    },
+  },
+};
diff --git a/BE/test/stock/index/stock.index.list.e2e-spec.ts b/BE/test/stock/index/stock.index.list.e2e-spec.ts
index 6079f011..7518b75d 100644
--- a/BE/test/stock/index/stock.index.list.e2e-spec.ts
+++ b/BE/test/stock/index/stock.index.list.e2e-spec.ts
@@ -16,7 +16,7 @@ describe('stock index list test', () => {
     stockIndexService = module.get(StockIndexService);
   });
 
-  it('주가 지수 API에서 정상적인 데이터를 조회한 경우, 형식에 맞춰 정상적으로 반환한다.', async () => {
+  it('주가 지수 차트 조회 API에서 정상적인 데이터를 조회한 경우, 형식에 맞춰 정상적으로 반환한다.', async () => {
     (axios.get as jest.Mock).mockResolvedValue(
       STOCK_INDEX_LIST_MOCK.VALID_DATA,
     );
@@ -37,7 +37,7 @@ describe('stock index list test', () => {
     });
   });
 
-  it('주가 지수 API에서 데이터를 조회하지 못한 경우, 에러를 발생시킨다.', async () => {
+  it('주가 지수 차트 조회 API에서 데이터를 조회하지 못한 경우, 에러를 발생시킨다.', async () => {
     (axios.get as jest.Mock).mockResolvedValue(
       STOCK_INDEX_LIST_MOCK.INVALID_DATA,
     );
diff --git a/BE/test/stock/index/stock.index.value.e2e-spec.ts b/BE/test/stock/index/stock.index.value.e2e-spec.ts
new file mode 100644
index 00000000..12ff2590
--- /dev/null
+++ b/BE/test/stock/index/stock.index.value.e2e-spec.ts
@@ -0,0 +1,48 @@
+import { Test } from '@nestjs/testing';
+import axios from 'axios';
+import { StockIndexService } from '../../../src/stock/index/stock.index.service';
+import { STOCK_INDEX_VALUE_MOCK } from './mockdata/stock.index.value.mockdata';
+
+jest.mock('axios');
+
+describe('stock index list test', () => {
+  let stockIndexService: StockIndexService;
+
+  beforeEach(async () => {
+    const module = await Test.createTestingModule({
+      providers: [StockIndexService],
+    }).compile();
+
+    stockIndexService = module.get(StockIndexService);
+  });
+
+  it('주가 지수 값 조회 API에서 정상적인 데이터를 조회한 경우, 형식에 맞춰 정상적으로 반환한다.', async () => {
+    (axios.get as jest.Mock).mockResolvedValue(
+      STOCK_INDEX_VALUE_MOCK.VALID_DATA,
+    );
+
+    expect(
+      await stockIndexService.getDomesticStockIndexValueByCode(
+        'code',
+        'accessToken',
+      ),
+    ).toEqual({
+      code: 'code',
+      value: STOCK_INDEX_VALUE_MOCK.VALID_DATA.data.output.bstp_nmix_prpr,
+      diff: STOCK_INDEX_VALUE_MOCK.VALID_DATA.data.output.bstp_nmix_prdy_vrss,
+      diffRate:
+        STOCK_INDEX_VALUE_MOCK.VALID_DATA.data.output.bstp_nmix_prdy_ctrt,
+      sign: STOCK_INDEX_VALUE_MOCK.VALID_DATA.data.output.prdy_vrss_sign,
+    });
+  });
+
+  it('주가 지수 값 조회 API에서 데이터를 조회하지 못한 경우, 에러를 발생시킨다.', async () => {
+    (axios.get as jest.Mock).mockResolvedValue(
+      STOCK_INDEX_VALUE_MOCK.INVALID_DATA,
+    );
+
+    await expect(
+      stockIndexService.getDomesticStockIndexValueByCode('code', 'accessToken'),
+    ).rejects.toThrow('데이터를 정상적으로 조회하지 못했습니다.');
+  });
+});

From 99362cdf5c55fad734d74a05168779e10aa7bd24 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Fri, 8 Nov 2024 10:13:25 +0900
Subject: [PATCH 11/16] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20refactor:=20getFullU?=
 =?UTF-8?q?rl,=20getHeader=20=EC=A0=81=EC=9A=A9?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../korea.investment.service.ts               | 14 ++++----
 BE/src/stock/index/stock.index.service.ts     | 34 +++++++------------
 BE/src/websocket/socket.service.ts            |  6 ++--
 3 files changed, 21 insertions(+), 33 deletions(-)

diff --git a/BE/src/koreaInvestment/korea.investment.service.ts b/BE/src/koreaInvestment/korea.investment.service.ts
index 57458372..73ebe901 100644
--- a/BE/src/koreaInvestment/korea.investment.service.ts
+++ b/BE/src/koreaInvestment/korea.investment.service.ts
@@ -1,4 +1,5 @@
 import axios from 'axios';
+import { getFullURL } from '../util/getFullURL';
 
 export class KoreaInvestmentService {
   private accessToken: string;
@@ -9,14 +10,11 @@ export class KoreaInvestmentService {
     if (this.accessToken && this.tokenExpireTime > new Date()) {
       return this.accessToken;
     }
-    const response = await axios.post(
-      `${process.env.KOREA_INVESTMENT_BASE_URL}/oauth2/tokenP`,
-      {
-        grant_type: 'client_credentials',
-        appkey: process.env.KOREA_INVESTMENT_APP_KEY,
-        appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
-      },
-    );
+    const response = await axios.post(getFullURL('/oauth2/tokenP'), {
+      grant_type: 'client_credentials',
+      appkey: process.env.KOREA_INVESTMENT_APP_KEY,
+      appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
+    });
 
     const { data } = response;
 
diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index 875be12d..42bb056b 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -7,6 +7,8 @@ import {
   StockIndexChartInterface,
   StockIndexValueInterface,
 } from './interface/stock.index.interface';
+import { getFullURL } from '../../util/getFullURL';
+import { getHeader } from '../../util/getHeader';
 
 @Injectable()
 export class StockIndexService {
@@ -39,12 +41,14 @@ export class StockIndexService {
     if (result.rt_cd !== '0')
       throw new Error('데이터를 정상적으로 조회하지 못했습니다.');
 
+    const data = result.output;
+
     return new StockIndexValueElementDto(
       code,
-      result.output.bstp_nmix_prpr,
-      result.output.bstp_nmix_prdy_vrss,
-      result.output.bstp_nmix_prdy_ctrt,
-      result.output.prdy_vrss_sign,
+      data.bstp_nmix_prpr,
+      data.bstp_nmix_prdy_vrss,
+      data.bstp_nmix_prdy_ctrt,
+      data.prdy_vrss_sign,
     );
   }
 
@@ -53,16 +57,9 @@ export class StockIndexService {
     accessToken: string,
   ) {
     const response = await axios.get<StockIndexChartInterface>(
-      `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/quotations/inquire-index-timeprice`,
+      getFullURL('/uapi/domestic-stock/v1/quotations/inquire-index-timeprice'),
       {
-        headers: {
-          'content-type': 'application/json; charset=utf-8',
-          authorization: `Bearer ${accessToken}`,
-          appkey: process.env.KOREA_INVESTMENT_APP_KEY,
-          appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
-          tr_id: 'FHPUP02110200',
-          custtype: 'P',
-        },
+        headers: getHeader(accessToken, 'FHPUP02110200'),
         params: {
           fid_input_hour_1: 300,
           fid_cond_mrkt_div_code: 'U',
@@ -79,16 +76,9 @@ export class StockIndexService {
     accessToken: string,
   ) {
     const response = await axios.get<StockIndexValueInterface>(
-      `${process.env.KOREA_INVESTMENT_BASE_URL}/uapi/domestic-stock/v1/quotations/inquire-index-price`,
+      getFullURL('/uapi/domestic-stock/v1/quotations/inquire-index-price'),
       {
-        headers: {
-          'content-type': 'application/json; charset=utf-8',
-          authorization: `Bearer ${accessToken}`,
-          appkey: process.env.KOREA_INVESTMENT_APP_KEY,
-          appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
-          tr_id: 'FHPUP02100000',
-          custtype: 'P',
-        },
+        headers: getHeader(accessToken, 'FHPUP02100000'),
         params: {
           fid_cond_mrkt_div_code: 'U',
           fid_input_iscd: code,
diff --git a/BE/src/websocket/socket.service.ts b/BE/src/websocket/socket.service.ts
index 0c25bf03..68893600 100644
--- a/BE/src/websocket/socket.service.ts
+++ b/BE/src/websocket/socket.service.ts
@@ -4,6 +4,7 @@ import axios from 'axios';
 import { SocketGateway } from './socket.gateway';
 import { StockIndexValueElementDto } from '../stock/index/dto/stock.index.value.element.dto';
 import { SocketConnectTokenInterface } from './interface/socket.interface';
+import { getFullURL } from '../util/getFullURL';
 
 @Injectable()
 export class SocketService implements OnModuleInit {
@@ -17,8 +18,7 @@ export class SocketService implements OnModuleInit {
   async onModuleInit() {
     const socketConnectionKey = await this.getSocketConnectionKey();
 
-    const url = 'ws://ops.koreainvestment.com:21000';
-    this.socket = new WebSocket(url);
+    this.socket = new WebSocket(process.env.KOREA_INVESTMENT_SOCKET_URL);
 
     this.socket.onopen = () => {
       this.registerStockIndexByCode('0001', socketConnectionKey); // 코스피
@@ -53,7 +53,7 @@ export class SocketService implements OnModuleInit {
 
   private async getSocketConnectionKey() {
     const response = await axios.post<SocketConnectTokenInterface>(
-      `${process.env.KOREA_INVESTMENT_BASE_URL}/oauth2/Approval`,
+      getFullURL('/oauth2/Approval'),
       {
         grant_type: 'client_credentials',
         appkey: process.env.KOREA_INVESTMENT_APP_KEY,

From 6549725d9e02ef975f98efc3fd562ea26ba4bf91 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Fri, 8 Nov 2024 10:59:58 +0900
Subject: [PATCH 12/16] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20refactor:=20stock=20?=
 =?UTF-8?q?index=20=EA=B4=80=EB=A0=A8=20=EC=86=8C=EC=BC=93=20=EC=9D=B4?=
 =?UTF-8?q?=EB=B2=A4=ED=8A=B8,=20response=20=ED=98=95=EC=8B=9D=20=EB=B3=80?=
 =?UTF-8?q?=EA=B2=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../index/dto/stock.index.list.element.dto.ts | 17 --------------
 .../dto/stock.index.response.element.dto.ts   | 14 +++++-------
 .../dto/stock.index.value.element.dto.ts      | 22 +++++--------------
 BE/src/stock/index/stock.index.controller.ts  | 11 +++++-----
 BE/src/stock/index/stock.index.service.ts     | 17 +++++---------
 BE/src/websocket/socket.gateway.ts            |  8 +++----
 BE/src/websocket/socket.service.ts            |  9 +++++++-
 7 files changed, 35 insertions(+), 63 deletions(-)
 delete mode 100644 BE/src/stock/index/dto/stock.index.list.element.dto.ts

diff --git a/BE/src/stock/index/dto/stock.index.list.element.dto.ts b/BE/src/stock/index/dto/stock.index.list.element.dto.ts
deleted file mode 100644
index 03ec0176..00000000
--- a/BE/src/stock/index/dto/stock.index.list.element.dto.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { ApiProperty } from '@nestjs/swagger';
-import { StockIndexListChartElementDto } from './stock.index.list.chart.element.dto';
-
-export class StockIndexListElementDto {
-  constructor(code: string, chart: StockIndexListChartElementDto[]) {
-    this.code = code;
-    this.chart = chart;
-  }
-
-  @ApiProperty({
-    description: '코스피: 0001, 코스닥: 1001, 코스피200: 2001, KSQ150: 3003',
-  })
-  code: string;
-
-  @ApiProperty({ type: [StockIndexListChartElementDto] })
-  chart: StockIndexListChartElementDto[];
-}
diff --git a/BE/src/stock/index/dto/stock.index.response.element.dto.ts b/BE/src/stock/index/dto/stock.index.response.element.dto.ts
index 7ce0ef1a..09e21102 100644
--- a/BE/src/stock/index/dto/stock.index.response.element.dto.ts
+++ b/BE/src/stock/index/dto/stock.index.response.element.dto.ts
@@ -1,16 +1,14 @@
 import { ApiProperty } from '@nestjs/swagger';
 import { StockIndexValueElementDto } from './stock.index.value.element.dto';
-import { StockIndexListElementDto } from './stock.index.list.element.dto';
+import { StockIndexListChartElementDto } from './stock.index.list.chart.element.dto';
 
 export class StockIndexResponseElementDto {
-  @ApiProperty({
-    description: '코스피: 0001, 코스닥: 1001, 코스피200: 2001, KSQ150: 3003',
-  })
-  code: string;
-
   @ApiProperty({ description: '실시간 값', type: StockIndexValueElementDto })
   value: StockIndexValueElementDto;
 
-  @ApiProperty({ description: '실시간 차트', type: StockIndexListElementDto })
-  chart: StockIndexListElementDto;
+  @ApiProperty({
+    description: '실시간 차트',
+    type: [StockIndexListChartElementDto],
+  })
+  chart: StockIndexListChartElementDto[];
 }
diff --git a/BE/src/stock/index/dto/stock.index.value.element.dto.ts b/BE/src/stock/index/dto/stock.index.value.element.dto.ts
index 88ca4949..1eb73a50 100644
--- a/BE/src/stock/index/dto/stock.index.value.element.dto.ts
+++ b/BE/src/stock/index/dto/stock.index.value.element.dto.ts
@@ -1,33 +1,21 @@
 import { ApiProperty } from '@nestjs/swagger';
 
 export class StockIndexValueElementDto {
-  constructor(
-    code: string,
-    value: string,
-    diff: string,
-    diffRate: string,
-    sign: string,
-  ) {
-    this.code = code;
-    this.value = value;
+  constructor(value: string, diff: string, diffRate: string, sign: string) {
+    this.curr_value = value;
     this.diff = diff;
-    this.diffRate = diffRate;
+    this.diff_rate = diffRate;
     this.sign = sign;
   }
 
-  @ApiProperty({
-    description: '코스피: 0001, 코스닥: 1001, 코스피200: 2001, KSQ150: 3003',
-  })
-  code: string;
-
   @ApiProperty({ description: '주가 지수' })
-  value: string;
+  curr_value: string;
 
   @ApiProperty({ description: '전일 대비 등락' })
   diff: string;
 
   @ApiProperty({ description: '전일 대비 등락률' })
-  diffRate: string;
+  diff_rate: string;
 
   @ApiProperty({ description: '부호... 인데 추후에 알아봐야 함' })
   sign: string;
diff --git a/BE/src/stock/index/stock.index.controller.ts b/BE/src/stock/index/stock.index.controller.ts
index 949df5a5..7625e044 100644
--- a/BE/src/stock/index/stock.index.controller.ts
+++ b/BE/src/stock/index/stock.index.controller.ts
@@ -70,22 +70,18 @@ export class StockIndexController {
 
     const stockIndexResponse = new StockIndexResponseDto();
     stockIndexResponse.KOSPI = {
-      code: '0001',
       value: kospiValue,
       chart: kospiChart,
     };
     stockIndexResponse.KOSDAQ = {
-      code: '1001',
       value: kosdaqValue,
       chart: kosdaqChart,
     };
     stockIndexResponse.KOSPI200 = {
-      code: '2001',
       value: kospi200Value,
       chart: kospi200Chart,
     };
     stockIndexResponse.KSQ150 = {
-      code: '3003',
       value: ksq150Value,
       chart: ksq150Chart,
     };
@@ -115,6 +111,11 @@ export class StockIndexController {
       ), // KSQ150
     ]);
 
-    this.socketGateway.sendStockIndexListToClient(stockLists);
+    this.socketGateway.sendStockIndexListToClient({
+      KOSPI: stockLists[0],
+      KOSDAQ: stockLists[1],
+      KOSPI200: stockLists[2],
+      KSQ150: stockLists[3],
+    });
   }
 }
diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index 42bb056b..0d4a97c0 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -1,7 +1,6 @@
 import { Injectable } from '@nestjs/common';
 import axios from 'axios';
 import { StockIndexListChartElementDto } from './dto/stock.index.list.chart.element.dto';
-import { StockIndexListElementDto } from './dto/stock.index.list.element.dto';
 import { StockIndexValueElementDto } from './dto/stock.index.value.element.dto';
 import {
   StockIndexChartInterface,
@@ -21,15 +20,12 @@ export class StockIndexService {
     if (result.rt_cd !== '0')
       throw new Error('데이터를 정상적으로 조회하지 못했습니다.');
 
-    return new StockIndexListElementDto(
-      code,
-      result.output.map((element) => {
-        return new StockIndexListChartElementDto(
-          element.bsop_hour,
-          element.bstp_nmix_prpr,
-        );
-      }),
-    );
+    return result.output.map((element) => {
+      return new StockIndexListChartElementDto(
+        element.bsop_hour,
+        element.bstp_nmix_prpr,
+      );
+    });
   }
 
   async getDomesticStockIndexValueByCode(code: string, accessToken: string) {
@@ -44,7 +40,6 @@ export class StockIndexService {
     const data = result.output;
 
     return new StockIndexValueElementDto(
-      code,
       data.bstp_nmix_prpr,
       data.bstp_nmix_prdy_vrss,
       data.bstp_nmix_prdy_ctrt,
diff --git a/BE/src/websocket/socket.gateway.ts b/BE/src/websocket/socket.gateway.ts
index 921d9503..e65eac69 100644
--- a/BE/src/websocket/socket.gateway.ts
+++ b/BE/src/websocket/socket.gateway.ts
@@ -6,11 +6,11 @@ export class SocketGateway {
   @WebSocketServer()
   private server: Server;
 
-  sendStockIndexListToClient(stockIndex) {
-    this.server.emit('index', stockIndex);
+  sendStockIndexListToClient(stockChart) {
+    this.server.emit('chart', stockChart);
   }
 
-  sendStockIndexValueToClient(stockIndexValue) {
-    this.server.emit('indexValue', stockIndexValue);
+  sendStockIndexValueToClient(event, stockIndexValue) {
+    this.server.emit(event, stockIndexValue);
   }
 }
diff --git a/BE/src/websocket/socket.service.ts b/BE/src/websocket/socket.service.ts
index 68893600..042cd57a 100644
--- a/BE/src/websocket/socket.service.ts
+++ b/BE/src/websocket/socket.service.ts
@@ -13,6 +13,13 @@ export class SocketService implements OnModuleInit {
     H0UPCNT0: this.handleStockIndexValue.bind(this),
   };
 
+  private STOCK_CODE = {
+    '0001': 'KOSPI',
+    '1001': 'KOSDAQ',
+    '2001': 'KOSPI200',
+    '3003': 'KSQ150',
+  };
+
   constructor(private readonly socketGateway: SocketGateway) {}
 
   async onModuleInit() {
@@ -41,8 +48,8 @@ export class SocketService implements OnModuleInit {
   private handleStockIndexValue(responseData: string) {
     const responseList = responseData.split('^');
     this.socketGateway.sendStockIndexValueToClient(
+      this.STOCK_CODE[responseList[0]],
       new StockIndexValueElementDto(
-        responseList[0],
         responseList[2],
         responseList[4],
         responseList[9],

From d65c70bfef23fc17362613566ac1a07033f24e2d Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Fri, 8 Nov 2024 11:24:23 +0900
Subject: [PATCH 13/16] =?UTF-8?q?=F0=9F=94=A7=20fix:=20service=20=EC=97=90?=
 =?UTF-8?q?=EB=9F=AC=EB=A5=BC=20http=20=EC=97=90=EB=9F=AC=EB=A1=9C=20?=
 =?UTF-8?q?=EB=B3=80=EA=B2=BD?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../korea.investment.service.ts               | 15 +++--
 BE/src/stock/index/stock.index.service.ts     | 60 +++++++++++--------
 2 files changed, 44 insertions(+), 31 deletions(-)

diff --git a/BE/src/koreaInvestment/korea.investment.service.ts b/BE/src/koreaInvestment/korea.investment.service.ts
index 73ebe901..886b68cb 100644
--- a/BE/src/koreaInvestment/korea.investment.service.ts
+++ b/BE/src/koreaInvestment/korea.investment.service.ts
@@ -1,4 +1,5 @@
 import axios from 'axios';
+import { UnauthorizedException } from '@nestjs/common';
 import { getFullURL } from '../util/getFullURL';
 
 export class KoreaInvestmentService {
@@ -10,11 +11,15 @@ export class KoreaInvestmentService {
     if (this.accessToken && this.tokenExpireTime > new Date()) {
       return this.accessToken;
     }
-    const response = await axios.post(getFullURL('/oauth2/tokenP'), {
-      grant_type: 'client_credentials',
-      appkey: process.env.KOREA_INVESTMENT_APP_KEY,
-      appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
-    });
+    const response = await axios
+      .post(getFullURL('/oauth2/tokenP'), {
+        grant_type: 'client_credentials',
+        appkey: process.env.KOREA_INVESTMENT_APP_KEY,
+        appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
+      })
+      .catch((err) => {
+        throw new UnauthorizedException('액세스 토큰을 조회하지 못했습니다.');
+      });
 
     const { data } = response;
 
diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index 0d4a97c0..3a14c7fc 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -1,4 +1,4 @@
-import { Injectable } from '@nestjs/common';
+import { Injectable, InternalServerErrorException } from '@nestjs/common';
 import axios from 'axios';
 import { StockIndexListChartElementDto } from './dto/stock.index.list.chart.element.dto';
 import { StockIndexValueElementDto } from './dto/stock.index.value.element.dto';
@@ -17,9 +17,6 @@ export class StockIndexService {
       accessToken,
     );
 
-    if (result.rt_cd !== '0')
-      throw new Error('데이터를 정상적으로 조회하지 못했습니다.');
-
     return result.output.map((element) => {
       return new StockIndexListChartElementDto(
         element.bsop_hour,
@@ -34,9 +31,6 @@ export class StockIndexService {
       accessToken,
     );
 
-    if (result.rt_cd !== '0')
-      throw new Error('데이터를 정상적으로 조회하지 못했습니다.');
-
     const data = result.output;
 
     return new StockIndexValueElementDto(
@@ -51,17 +45,25 @@ export class StockIndexService {
     code: string,
     accessToken: string,
   ) {
-    const response = await axios.get<StockIndexChartInterface>(
-      getFullURL('/uapi/domestic-stock/v1/quotations/inquire-index-timeprice'),
-      {
-        headers: getHeader(accessToken, 'FHPUP02110200'),
-        params: {
-          fid_input_hour_1: 300,
-          fid_cond_mrkt_div_code: 'U',
-          fid_input_iscd: code,
+    const response = await axios
+      .get<StockIndexChartInterface>(
+        getFullURL(
+          '/uapi/domestic-stock/v1/quotations/inquire-index-timeprice',
+        ),
+        {
+          headers: getHeader(accessToken, 'FHPUP02110200'),
+          params: {
+            fid_input_hour_1: 300,
+            fid_cond_mrkt_div_code: 'U',
+            fid_input_iscd: code,
+          },
         },
-      },
-    );
+      )
+      .catch((err) => {
+        throw new InternalServerErrorException(
+          '주가 지수 차트 정보를 조회하지 못했습니다.',
+        );
+      });
 
     return response.data;
   }
@@ -70,16 +72,22 @@ export class StockIndexService {
     code: string,
     accessToken: string,
   ) {
-    const response = await axios.get<StockIndexValueInterface>(
-      getFullURL('/uapi/domestic-stock/v1/quotations/inquire-index-price'),
-      {
-        headers: getHeader(accessToken, 'FHPUP02100000'),
-        params: {
-          fid_cond_mrkt_div_code: 'U',
-          fid_input_iscd: code,
+    const response = await axios
+      .get<StockIndexValueInterface>(
+        getFullURL('/uapi/domestic-stock/v1/quotations/inquire-index-price'),
+        {
+          headers: getHeader(accessToken, 'FHPUP02100000'),
+          params: {
+            fid_cond_mrkt_div_code: 'U',
+            fid_input_iscd: code,
+          },
         },
-      },
-    );
+      )
+      .catch((err) => {
+        throw new InternalServerErrorException(
+          '주가 지수 값 정보를 조회하지 못했습니다.',
+        );
+      });
 
     return response.data;
   }

From 462c8a189747ec8e15cb25eec87b8e4936543db3 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Fri, 8 Nov 2024 11:42:36 +0900
Subject: [PATCH 14/16] =?UTF-8?q?=F0=9F=94=A7=20fix:=20getAccessToken=20?=
 =?UTF-8?q?=EB=A1=9C=EC=A7=81=20=EC=98=A4=EB=A5=98=20=EC=88=98=EC=A0=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../interface/korea.investment.interface.ts                | 6 ++++++
 BE/src/koreaInvestment/korea.investment.service.ts         | 7 ++++---
 BE/src/stock/index/stock.index.service.ts                  | 4 ++--
 3 files changed, 12 insertions(+), 5 deletions(-)
 create mode 100644 BE/src/koreaInvestment/interface/korea.investment.interface.ts

diff --git a/BE/src/koreaInvestment/interface/korea.investment.interface.ts b/BE/src/koreaInvestment/interface/korea.investment.interface.ts
new file mode 100644
index 00000000..e290a32c
--- /dev/null
+++ b/BE/src/koreaInvestment/interface/korea.investment.interface.ts
@@ -0,0 +1,6 @@
+export interface AccessTokenInterface {
+  access_token: string;
+  access_token_token_expired: string;
+  token_type: string;
+  expires_in: number;
+}
diff --git a/BE/src/koreaInvestment/korea.investment.service.ts b/BE/src/koreaInvestment/korea.investment.service.ts
index 886b68cb..727c044c 100644
--- a/BE/src/koreaInvestment/korea.investment.service.ts
+++ b/BE/src/koreaInvestment/korea.investment.service.ts
@@ -1,6 +1,7 @@
 import axios from 'axios';
 import { UnauthorizedException } from '@nestjs/common';
 import { getFullURL } from '../util/getFullURL';
+import { AccessTokenInterface } from './interface/korea.investment.interface';
 
 export class KoreaInvestmentService {
   private accessToken: string;
@@ -12,19 +13,19 @@ export class KoreaInvestmentService {
       return this.accessToken;
     }
     const response = await axios
-      .post(getFullURL('/oauth2/tokenP'), {
+      .post<AccessTokenInterface>(getFullURL('/oauth2/tokenP'), {
         grant_type: 'client_credentials',
         appkey: process.env.KOREA_INVESTMENT_APP_KEY,
         appsecret: process.env.KOREA_INVESTMENT_APP_SECRET,
       })
-      .catch((err) => {
+      .catch(() => {
         throw new UnauthorizedException('액세스 토큰을 조회하지 못했습니다.');
       });
 
     const { data } = response;
 
     this.accessToken = data.access_token;
-    this.tokenExpireTime = new Date(Date.now() + +data.expires_in);
+    this.tokenExpireTime = new Date(data.access_token_token_expired);
 
     return this.accessToken;
   }
diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index 3a14c7fc..587af43d 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -59,7 +59,7 @@ export class StockIndexService {
           },
         },
       )
-      .catch((err) => {
+      .catch(() => {
         throw new InternalServerErrorException(
           '주가 지수 차트 정보를 조회하지 못했습니다.',
         );
@@ -83,7 +83,7 @@ export class StockIndexService {
           },
         },
       )
-      .catch((err) => {
+      .catch(() => {
         throw new InternalServerErrorException(
           '주가 지수 값 정보를 조회하지 못했습니다.',
         );

From f210aa0780a7722ab4b74e8d7ec552810fb61fb1 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Sun, 10 Nov 2024 00:35:32 +0900
Subject: [PATCH 15/16] =?UTF-8?q?=E2=9E=95=20add:=20=EC=B0=A8=ED=8A=B8=20r?=
 =?UTF-8?q?esponse=EC=97=90=20=EC=A0=84=EC=9D=BC=20=EB=8C=80=EB=B9=84=20?=
 =?UTF-8?q?=EA=B0=92=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../stock/index/dto/stock.index.list.chart.element.dto.ts   | 6 +++++-
 BE/src/stock/index/stock.index.service.ts                   | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/BE/src/stock/index/dto/stock.index.list.chart.element.dto.ts b/BE/src/stock/index/dto/stock.index.list.chart.element.dto.ts
index 1f2abdce..ba6ce1f2 100644
--- a/BE/src/stock/index/dto/stock.index.list.chart.element.dto.ts
+++ b/BE/src/stock/index/dto/stock.index.list.chart.element.dto.ts
@@ -1,9 +1,10 @@
 import { ApiProperty } from '@nestjs/swagger';
 
 export class StockIndexListChartElementDto {
-  constructor(time: string, value: string) {
+  constructor(time: string, value: string, diff: string) {
     this.time = time;
     this.value = value;
+    this.diff = diff;
   }
 
   @ApiProperty({ description: 'HHMMSS', example: '130500' })
@@ -11,4 +12,7 @@ export class StockIndexListChartElementDto {
 
   @ApiProperty({ description: '주가 지수' })
   value: string;
+
+  @ApiProperty({ description: '전일 대비 주가 지수' })
+  diff: string;
 }
diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock.index.service.ts
index 587af43d..f15326f5 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock.index.service.ts
@@ -21,6 +21,7 @@ export class StockIndexService {
       return new StockIndexListChartElementDto(
         element.bsop_hour,
         element.bstp_nmix_prpr,
+        element.bstp_nmix_prdy_vrss,
       );
     });
   }

From 19fccb72de3a981e3a60a3724245163d04397953 Mon Sep 17 00:00:00 2001
From: anjdydhody <a01066444534@gmail.com>
Date: Mon, 11 Nov 2024 10:57:13 +0900
Subject: [PATCH 16/16] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20refactor:=20?=
 =?UTF-8?q?=EB=B0=B1=EC=97=94=EB=93=9C=20=ED=8C=8C=EC=9D=BC=EB=AA=85=20?=
 =?UTF-8?q?=ED=86=B5=EC=9D=BC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BE/src/app.module.ts                                   |  6 +++---
 BE/src/auth/auth.controller.ts                         |  2 +-
 BE/src/auth/auth.service.ts                            |  2 +-
 ...{authCredentials.dto.ts => auth-credentials.dto.ts} |  0
 BE/src/auth/user.repository.ts                         |  2 +-
 ...ment.interface.ts => korea-investment.interface.ts} |  0
 ...investment.module.ts => korea-investment.module.ts} |  2 +-
 ...vestment.service.ts => korea-investment.service.ts} |  4 ++--
 BE/src/stock/enum/{MarketType.ts => market-type.ts}    |  0
 ...nt.dto.ts => stock-index-list-chart.element.dto.ts} |  0
 ...ment.dto.ts => stock-index-response-element.dto.ts} |  4 ++--
 ...dex.response.dto.ts => stock-index-response.dto.ts} |  2 +-
 ...element.dto.ts => stock-index-value-element.dto.ts} |  0
 ...ock.index.interface.ts => stock-index.interface.ts} |  0
 ...k.index.controller.ts => stock-index.controller.ts} |  6 +++---
 .../{stock.index.module.ts => stock-index.module.ts}   |  6 +++---
 .../{stock.index.service.ts => stock-index.service.ts} | 10 +++++-----
 ...topfive.interface.ts => stock-topfive.interface.ts} |  0
 ...pfive.controller.ts => stock-topfive.controller.ts} |  4 ++--
 ...stock.topfive.module.ts => stock-topfive.module.ts} |  6 +++---
 ...ock.topfive.service.ts => stock-topfive.service.ts} | 10 +++++-----
 BE/src/util/{getFullURL.ts => get-full-URL.ts}         |  0
 BE/src/util/{getHeader.ts => get-header.ts}            |  0
 BE/src/websocket/socket.service.ts                     |  4 ++--
 BE/test/stock/index/stock.index.list.e2e-spec.ts       |  2 +-
 BE/test/stock/index/stock.index.value.e2e-spec.ts      |  2 +-
 26 files changed, 37 insertions(+), 37 deletions(-)
 rename BE/src/auth/dto/{authCredentials.dto.ts => auth-credentials.dto.ts} (100%)
 rename BE/src/koreaInvestment/interface/{korea.investment.interface.ts => korea-investment.interface.ts} (100%)
 rename BE/src/koreaInvestment/{korea.investment.module.ts => korea-investment.module.ts} (76%)
 rename BE/src/koreaInvestment/{korea.investment.service.ts => korea-investment.service.ts} (89%)
 rename BE/src/stock/enum/{MarketType.ts => market-type.ts} (100%)
 rename BE/src/stock/index/dto/{stock.index.list.chart.element.dto.ts => stock-index-list-chart.element.dto.ts} (100%)
 rename BE/src/stock/index/dto/{stock.index.response.element.dto.ts => stock-index-response-element.dto.ts} (71%)
 rename BE/src/stock/index/dto/{stock.index.response.dto.ts => stock-index-response.dto.ts} (88%)
 rename BE/src/stock/index/dto/{stock.index.value.element.dto.ts => stock-index-value-element.dto.ts} (100%)
 rename BE/src/stock/index/interface/{stock.index.interface.ts => stock-index.interface.ts} (100%)
 rename BE/src/stock/index/{stock.index.controller.ts => stock-index.controller.ts} (96%)
 rename BE/src/stock/index/{stock.index.module.ts => stock-index.module.ts} (71%)
 rename BE/src/stock/index/{stock.index.service.ts => stock-index.service.ts} (87%)
 rename BE/src/stock/topfive/interface/{stock.topfive.interface.ts => stock-topfive.interface.ts} (100%)
 rename BE/src/stock/topfive/{stock.topfive.controller.ts => stock-topfive.controller.ts} (88%)
 rename BE/src/stock/topfive/{stock.topfive.module.ts => stock-topfive.module.ts} (68%)
 rename BE/src/stock/topfive/{stock.topfive.service.ts => stock-topfive.service.ts} (95%)
 rename BE/src/util/{getFullURL.ts => get-full-URL.ts} (100%)
 rename BE/src/util/{getHeader.ts => get-header.ts} (100%)

diff --git a/BE/src/app.module.ts b/BE/src/app.module.ts
index fbef051f..114ecadf 100644
--- a/BE/src/app.module.ts
+++ b/BE/src/app.module.ts
@@ -6,9 +6,9 @@ import { AppController } from './app.controller';
 import { AppService } from './app.service';
 import { AuthModule } from './auth/auth.module';
 import { User } from './auth/user.entity';
-import { StockIndexModule } from './stock/index/stock.index.module';
-import { StockTopfiveModule } from './stock/topfive/stock.topfive.module';
-import { KoreaInvestmentModule } from './koreaInvestment/korea.investment.module';
+import { StockIndexModule } from './stock/index/stock-index.module';
+import { StockTopfiveModule } from './stock/topfive/stock-topfive.module';
+import { KoreaInvestmentModule } from './koreaInvestment/korea-investment.module';
 import { SocketModule } from './websocket/socket.module';
 
 @Module({
diff --git a/BE/src/auth/auth.controller.ts b/BE/src/auth/auth.controller.ts
index 8411eb48..aee104f0 100644
--- a/BE/src/auth/auth.controller.ts
+++ b/BE/src/auth/auth.controller.ts
@@ -10,7 +10,7 @@ import {
 import { AuthGuard } from '@nestjs/passport';
 import { ApiOperation } from '@nestjs/swagger';
 import { AuthService } from './auth.service';
-import { AuthCredentialsDto } from './dto/authCredentials.dto';
+import { AuthCredentialsDto } from './dto/auth-credentials.dto';
 
 @Controller('auth')
 export class AuthController {
diff --git a/BE/src/auth/auth.service.ts b/BE/src/auth/auth.service.ts
index cbc4a69f..6f751e1b 100644
--- a/BE/src/auth/auth.service.ts
+++ b/BE/src/auth/auth.service.ts
@@ -3,7 +3,7 @@ import { InjectRepository } from '@nestjs/typeorm';
 import { JwtService } from '@nestjs/jwt';
 import * as bcrypt from 'bcrypt';
 import { UserRepository } from './user.repository';
-import { AuthCredentialsDto } from './dto/authCredentials.dto';
+import { AuthCredentialsDto } from './dto/auth-credentials.dto';
 
 @Injectable()
 export class AuthService {
diff --git a/BE/src/auth/dto/authCredentials.dto.ts b/BE/src/auth/dto/auth-credentials.dto.ts
similarity index 100%
rename from BE/src/auth/dto/authCredentials.dto.ts
rename to BE/src/auth/dto/auth-credentials.dto.ts
diff --git a/BE/src/auth/user.repository.ts b/BE/src/auth/user.repository.ts
index 0a23f980..429437e7 100644
--- a/BE/src/auth/user.repository.ts
+++ b/BE/src/auth/user.repository.ts
@@ -3,7 +3,7 @@ import { InjectDataSource } from '@nestjs/typeorm';
 import { DataSource, Repository } from 'typeorm';
 import * as bcrypt from 'bcrypt';
 import { User } from './user.entity';
-import { AuthCredentialsDto } from './dto/authCredentials.dto';
+import { AuthCredentialsDto } from './dto/auth-credentials.dto';
 
 @Injectable()
 export class UserRepository extends Repository<User> {
diff --git a/BE/src/koreaInvestment/interface/korea.investment.interface.ts b/BE/src/koreaInvestment/interface/korea-investment.interface.ts
similarity index 100%
rename from BE/src/koreaInvestment/interface/korea.investment.interface.ts
rename to BE/src/koreaInvestment/interface/korea-investment.interface.ts
diff --git a/BE/src/koreaInvestment/korea.investment.module.ts b/BE/src/koreaInvestment/korea-investment.module.ts
similarity index 76%
rename from BE/src/koreaInvestment/korea.investment.module.ts
rename to BE/src/koreaInvestment/korea-investment.module.ts
index 69679c6b..8e7dd10a 100644
--- a/BE/src/koreaInvestment/korea.investment.module.ts
+++ b/BE/src/koreaInvestment/korea-investment.module.ts
@@ -1,5 +1,5 @@
 import { Module } from '@nestjs/common';
-import { KoreaInvestmentService } from './korea.investment.service';
+import { KoreaInvestmentService } from './korea-investment.service';
 
 @Module({
   imports: [],
diff --git a/BE/src/koreaInvestment/korea.investment.service.ts b/BE/src/koreaInvestment/korea-investment.service.ts
similarity index 89%
rename from BE/src/koreaInvestment/korea.investment.service.ts
rename to BE/src/koreaInvestment/korea-investment.service.ts
index 727c044c..29dc323c 100644
--- a/BE/src/koreaInvestment/korea.investment.service.ts
+++ b/BE/src/koreaInvestment/korea-investment.service.ts
@@ -1,7 +1,7 @@
 import axios from 'axios';
 import { UnauthorizedException } from '@nestjs/common';
-import { getFullURL } from '../util/getFullURL';
-import { AccessTokenInterface } from './interface/korea.investment.interface';
+import { getFullURL } from '../util/get-full-URL';
+import { AccessTokenInterface } from './interface/korea-investment.interface';
 
 export class KoreaInvestmentService {
   private accessToken: string;
diff --git a/BE/src/stock/enum/MarketType.ts b/BE/src/stock/enum/market-type.ts
similarity index 100%
rename from BE/src/stock/enum/MarketType.ts
rename to BE/src/stock/enum/market-type.ts
diff --git a/BE/src/stock/index/dto/stock.index.list.chart.element.dto.ts b/BE/src/stock/index/dto/stock-index-list-chart.element.dto.ts
similarity index 100%
rename from BE/src/stock/index/dto/stock.index.list.chart.element.dto.ts
rename to BE/src/stock/index/dto/stock-index-list-chart.element.dto.ts
diff --git a/BE/src/stock/index/dto/stock.index.response.element.dto.ts b/BE/src/stock/index/dto/stock-index-response-element.dto.ts
similarity index 71%
rename from BE/src/stock/index/dto/stock.index.response.element.dto.ts
rename to BE/src/stock/index/dto/stock-index-response-element.dto.ts
index 09e21102..79cf6af5 100644
--- a/BE/src/stock/index/dto/stock.index.response.element.dto.ts
+++ b/BE/src/stock/index/dto/stock-index-response-element.dto.ts
@@ -1,6 +1,6 @@
 import { ApiProperty } from '@nestjs/swagger';
-import { StockIndexValueElementDto } from './stock.index.value.element.dto';
-import { StockIndexListChartElementDto } from './stock.index.list.chart.element.dto';
+import { StockIndexValueElementDto } from './stock-index-value-element.dto';
+import { StockIndexListChartElementDto } from './stock-index-list-chart.element.dto';
 
 export class StockIndexResponseElementDto {
   @ApiProperty({ description: '실시간 값', type: StockIndexValueElementDto })
diff --git a/BE/src/stock/index/dto/stock.index.response.dto.ts b/BE/src/stock/index/dto/stock-index-response.dto.ts
similarity index 88%
rename from BE/src/stock/index/dto/stock.index.response.dto.ts
rename to BE/src/stock/index/dto/stock-index-response.dto.ts
index 7f26af32..026fecf3 100644
--- a/BE/src/stock/index/dto/stock.index.response.dto.ts
+++ b/BE/src/stock/index/dto/stock-index-response.dto.ts
@@ -1,5 +1,5 @@
 import { ApiProperty } from '@nestjs/swagger';
-import { StockIndexResponseElementDto } from './stock.index.response.element.dto';
+import { StockIndexResponseElementDto } from './stock-index-response-element.dto';
 
 export class StockIndexResponseDto {
   @ApiProperty({
diff --git a/BE/src/stock/index/dto/stock.index.value.element.dto.ts b/BE/src/stock/index/dto/stock-index-value-element.dto.ts
similarity index 100%
rename from BE/src/stock/index/dto/stock.index.value.element.dto.ts
rename to BE/src/stock/index/dto/stock-index-value-element.dto.ts
diff --git a/BE/src/stock/index/interface/stock.index.interface.ts b/BE/src/stock/index/interface/stock-index.interface.ts
similarity index 100%
rename from BE/src/stock/index/interface/stock.index.interface.ts
rename to BE/src/stock/index/interface/stock-index.interface.ts
diff --git a/BE/src/stock/index/stock.index.controller.ts b/BE/src/stock/index/stock-index.controller.ts
similarity index 96%
rename from BE/src/stock/index/stock.index.controller.ts
rename to BE/src/stock/index/stock-index.controller.ts
index 7625e044..330685e2 100644
--- a/BE/src/stock/index/stock.index.controller.ts
+++ b/BE/src/stock/index/stock-index.controller.ts
@@ -1,9 +1,9 @@
 import { Controller, Get } from '@nestjs/common';
 import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
 import { Cron } from '@nestjs/schedule';
-import { StockIndexService } from './stock.index.service';
-import { StockIndexResponseDto } from './dto/stock.index.response.dto';
-import { KoreaInvestmentService } from '../../koreaInvestment/korea.investment.service';
+import { StockIndexService } from './stock-index.service';
+import { StockIndexResponseDto } from './dto/stock-index-response.dto';
+import { KoreaInvestmentService } from '../../koreaInvestment/korea-investment.service';
 import { SocketGateway } from '../../websocket/socket.gateway';
 
 @Controller('/api/stocks/index')
diff --git a/BE/src/stock/index/stock.index.module.ts b/BE/src/stock/index/stock-index.module.ts
similarity index 71%
rename from BE/src/stock/index/stock.index.module.ts
rename to BE/src/stock/index/stock-index.module.ts
index 1227e4f7..64e0c575 100644
--- a/BE/src/stock/index/stock.index.module.ts
+++ b/BE/src/stock/index/stock-index.module.ts
@@ -1,7 +1,7 @@
 import { Module } from '@nestjs/common';
-import { StockIndexController } from './stock.index.controller';
-import { StockIndexService } from './stock.index.service';
-import { KoreaInvestmentModule } from '../../koreaInvestment/korea.investment.module';
+import { StockIndexController } from './stock-index.controller';
+import { StockIndexService } from './stock-index.service';
+import { KoreaInvestmentModule } from '../../koreaInvestment/korea-investment.module';
 import { SocketModule } from '../../websocket/socket.module';
 
 @Module({
diff --git a/BE/src/stock/index/stock.index.service.ts b/BE/src/stock/index/stock-index.service.ts
similarity index 87%
rename from BE/src/stock/index/stock.index.service.ts
rename to BE/src/stock/index/stock-index.service.ts
index f15326f5..fa05ed4c 100644
--- a/BE/src/stock/index/stock.index.service.ts
+++ b/BE/src/stock/index/stock-index.service.ts
@@ -1,13 +1,13 @@
 import { Injectable, InternalServerErrorException } from '@nestjs/common';
 import axios from 'axios';
-import { StockIndexListChartElementDto } from './dto/stock.index.list.chart.element.dto';
-import { StockIndexValueElementDto } from './dto/stock.index.value.element.dto';
+import { StockIndexListChartElementDto } from './dto/stock-index-list-chart.element.dto';
+import { StockIndexValueElementDto } from './dto/stock-index-value-element.dto';
 import {
   StockIndexChartInterface,
   StockIndexValueInterface,
-} from './interface/stock.index.interface';
-import { getFullURL } from '../../util/getFullURL';
-import { getHeader } from '../../util/getHeader';
+} from './interface/stock-index.interface';
+import { getFullURL } from '../../util/get-full-URL';
+import { getHeader } from '../../util/get-header';
 
 @Injectable()
 export class StockIndexService {
diff --git a/BE/src/stock/topfive/interface/stock.topfive.interface.ts b/BE/src/stock/topfive/interface/stock-topfive.interface.ts
similarity index 100%
rename from BE/src/stock/topfive/interface/stock.topfive.interface.ts
rename to BE/src/stock/topfive/interface/stock-topfive.interface.ts
diff --git a/BE/src/stock/topfive/stock.topfive.controller.ts b/BE/src/stock/topfive/stock-topfive.controller.ts
similarity index 88%
rename from BE/src/stock/topfive/stock.topfive.controller.ts
rename to BE/src/stock/topfive/stock-topfive.controller.ts
index f90d300a..bac275e3 100644
--- a/BE/src/stock/topfive/stock.topfive.controller.ts
+++ b/BE/src/stock/topfive/stock-topfive.controller.ts
@@ -1,8 +1,8 @@
 import { ApiOperation, ApiQuery, ApiResponse } from '@nestjs/swagger';
 import { Controller, Get, Query } from '@nestjs/common';
-import { StockTopfiveService } from './stock.topfive.service';
+import { StockTopfiveService } from './stock-topfive.service';
 import { StockRankingResponseDto } from './dto/stock-ranking-response.dto';
-import { MarketType } from '../enum/MarketType';
+import { MarketType } from '../enum/market-type';
 
 @Controller('/api/stocks')
 export class StockTopfiveController {
diff --git a/BE/src/stock/topfive/stock.topfive.module.ts b/BE/src/stock/topfive/stock-topfive.module.ts
similarity index 68%
rename from BE/src/stock/topfive/stock.topfive.module.ts
rename to BE/src/stock/topfive/stock-topfive.module.ts
index 33a63aae..5be62a4f 100644
--- a/BE/src/stock/topfive/stock.topfive.module.ts
+++ b/BE/src/stock/topfive/stock-topfive.module.ts
@@ -1,8 +1,8 @@
 import { Module } from '@nestjs/common';
 import { ConfigModule } from '@nestjs/config';
-import { StockTopfiveController } from './stock.topfive.controller';
-import { StockTopfiveService } from './stock.topfive.service';
-import { KoreaInvestmentModule } from '../../koreaInvestment/korea.investment.module';
+import { StockTopfiveController } from './stock-topfive.controller';
+import { StockTopfiveService } from './stock-topfive.service';
+import { KoreaInvestmentModule } from '../../koreaInvestment/korea-investment.module';
 
 @Module({
   imports: [ConfigModule, KoreaInvestmentModule],
diff --git a/BE/src/stock/topfive/stock.topfive.service.ts b/BE/src/stock/topfive/stock-topfive.service.ts
similarity index 95%
rename from BE/src/stock/topfive/stock.topfive.service.ts
rename to BE/src/stock/topfive/stock-topfive.service.ts
index d8da1643..82f659d5 100644
--- a/BE/src/stock/topfive/stock.topfive.service.ts
+++ b/BE/src/stock/topfive/stock-topfive.service.ts
@@ -3,14 +3,14 @@ import { Injectable, Logger } from '@nestjs/common';
 import { StockRankingQueryParameterDto } from './dto/stock-ranking-request.dto';
 import { StockRankingResponseDto } from './dto/stock-ranking-response.dto';
 import { StockRankingDataDto } from './dto/stock-ranking-data.dto';
-import { MarketType } from '../enum/MarketType';
+import { MarketType } from '../enum/market-type';
 import {
   StockApiOutputData,
   StockApiResponse,
-} from './interface/stock.topfive.interface';
-import { getHeader } from '../../util/getHeader';
-import { getFullURL } from '../../util/getFullURL';
-import { KoreaInvestmentService } from '../../koreaInvestment/korea.investment.service';
+} from './interface/stock-topfive.interface';
+import { getHeader } from '../../util/get-header';
+import { getFullURL } from '../../util/get-full-URL';
+import { KoreaInvestmentService } from '../../koreaInvestment/korea-investment.service';
 
 @Injectable()
 export class StockTopfiveService {
diff --git a/BE/src/util/getFullURL.ts b/BE/src/util/get-full-URL.ts
similarity index 100%
rename from BE/src/util/getFullURL.ts
rename to BE/src/util/get-full-URL.ts
diff --git a/BE/src/util/getHeader.ts b/BE/src/util/get-header.ts
similarity index 100%
rename from BE/src/util/getHeader.ts
rename to BE/src/util/get-header.ts
diff --git a/BE/src/websocket/socket.service.ts b/BE/src/websocket/socket.service.ts
index 042cd57a..0bcb7b64 100644
--- a/BE/src/websocket/socket.service.ts
+++ b/BE/src/websocket/socket.service.ts
@@ -2,9 +2,9 @@ import { Injectable, OnModuleInit } from '@nestjs/common';
 import { WebSocket } from 'ws';
 import axios from 'axios';
 import { SocketGateway } from './socket.gateway';
-import { StockIndexValueElementDto } from '../stock/index/dto/stock.index.value.element.dto';
+import { StockIndexValueElementDto } from '../stock/index/dto/stock-index-value-element.dto';
 import { SocketConnectTokenInterface } from './interface/socket.interface';
-import { getFullURL } from '../util/getFullURL';
+import { getFullURL } from '../util/get-full-URL';
 
 @Injectable()
 export class SocketService implements OnModuleInit {
diff --git a/BE/test/stock/index/stock.index.list.e2e-spec.ts b/BE/test/stock/index/stock.index.list.e2e-spec.ts
index 7518b75d..9a844581 100644
--- a/BE/test/stock/index/stock.index.list.e2e-spec.ts
+++ b/BE/test/stock/index/stock.index.list.e2e-spec.ts
@@ -1,6 +1,6 @@
 import { Test } from '@nestjs/testing';
 import axios from 'axios';
-import { StockIndexService } from '../../../src/stock/index/stock.index.service';
+import { StockIndexService } from '../../../src/stock/index/stock-index.service';
 import { STOCK_INDEX_LIST_MOCK } from './mockdata/stock.index.list.mockdata';
 
 jest.mock('axios');
diff --git a/BE/test/stock/index/stock.index.value.e2e-spec.ts b/BE/test/stock/index/stock.index.value.e2e-spec.ts
index 12ff2590..2008f2e4 100644
--- a/BE/test/stock/index/stock.index.value.e2e-spec.ts
+++ b/BE/test/stock/index/stock.index.value.e2e-spec.ts
@@ -1,6 +1,6 @@
 import { Test } from '@nestjs/testing';
 import axios from 'axios';
-import { StockIndexService } from '../../../src/stock/index/stock.index.service';
+import { StockIndexService } from '../../../src/stock/index/stock-index.service';
 import { STOCK_INDEX_VALUE_MOCK } from './mockdata/stock.index.value.mockdata';
 
 jest.mock('axios');