From d09db368898419c6e1a662cc9d6e1a56ac0da290 Mon Sep 17 00:00:00 2001
From: Dmitry Grudin <dngrudi1@mts.ru>
Date: Fri, 13 Dec 2024 12:52:43 +0300
Subject: [PATCH] Changed error detection check when sending data via socket

---
 clickhouse/base/socket.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/clickhouse/base/socket.cpp b/clickhouse/base/socket.cpp
index 3c866299..3bb1aa5a 100644
--- a/clickhouse/base/socket.cpp
+++ b/clickhouse/base/socket.cpp
@@ -457,11 +457,12 @@ size_t SocketOutput::DoWrite(const void* data, size_t len) {
     static const int flags = 0;
 #endif
 
-    if (::send(s_, (const char*)data, (int)len, flags) != (int)len) {
+    const ssize_t ret = ::send(s_, (const char*)data, (int)len, flags);
+    if (ret < 0) {
         throw std::system_error(getSocketErrorCode(), getErrorCategory(), "fail to send " + std::to_string(len) + " bytes of data");
     }
 
-    return len;
+    return (size_t)ret;
 }