From edac6da891f84461fae1a95be114a5e4eaa87df3 Mon Sep 17 00:00:00 2001
From: Simon Knott <info@simonknott.de>
Date: Fri, 28 Mar 2025 10:03:41 +0100
Subject: [PATCH] fix: tired URL parsing bug (#70)

Closes https://github.com/microsoft/playwright-mcp/issues/67

When `req.headers.host` is defined, the URL parsing breaks because
there's no protocol.
---
 src/program.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/program.ts b/src/program.ts
index ed9cf50..f3fe23d 100644
--- a/src/program.ts
+++ b/src/program.ts
@@ -54,9 +54,9 @@ program
       if (options.port) {
         const sessions = new Map<string, SSEServerTransport>();
         const httpServer = http.createServer(async (req, res) => {
+          const url = new URL(req.url ?? '', `http://${req.headers.host}`);
           if (req.method === 'POST') {
-            const host = req.headers.host ?? 'http://unknown';
-            const sessionId = new URL(host + req.url!).searchParams.get('sessionId');
+            const sessionId = url.searchParams.get('sessionId');
             if (!sessionId) {
               res.statusCode = 400;
               res.end('Missing sessionId');