From ee069949a14a8880d4ce8a0b12a57b56d0e70972 Mon Sep 17 00:00:00 2001
From: k-fish <kevan.fisher@sentry.io>
Date: Mon, 17 Jul 2023 09:44:10 -0400
Subject: [PATCH] Add more complete protocol splitting

---
 .../tracing-internal/src/browser/request.ts   | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/packages/tracing-internal/src/browser/request.ts b/packages/tracing-internal/src/browser/request.ts
index 9c437e0f27b2..7942df7f459c 100644
--- a/packages/tracing-internal/src/browser/request.ts
+++ b/packages/tracing-internal/src/browser/request.ts
@@ -189,8 +189,23 @@ function addHTTPTimings(span: Span): void {
  * @param nextHopProtocol PerformanceResourceTiming.nextHopProtocol
  */
 export function extractNetworkProtocol(nextHopProtocol: string): { name: string; version: string } {
-  const name = nextHopProtocol.split('/')[0].toLowerCase() || (nextHopProtocol.startsWith('h') && 'http') || 'unknown';
-  const version = nextHopProtocol.split('/')[1] || nextHopProtocol.split('h')[1] || 'unknown';
+  let name = 'unknown';
+  let version = 'unknown';
+  let _name = '';
+  for (const char of nextHopProtocol) {
+    // http/1.1 etc.
+    if (char === '/') {
+      [name, version] = nextHopProtocol.split('/');
+      break;
+    }
+    // h2, h3 etc.
+    if (!isNaN(Number(char))) {
+      name = _name === 'h' ? 'http' : _name;
+      version = nextHopProtocol.split(_name)[1];
+      break;
+    }
+    _name += char;
+  }
   return { name, version };
 }