fix(node): Compression headers leak between requests (#5203)

Author: timfish

packages/node/src/transports/http.ts

@@ -105,20 +105,18 @@ function createRequestExecutor(
     return new Promise((resolve, reject) => {
       let body = streamFromBody(request.body);
 
-      if (request.body.length > GZIP_THRESHOLD) {
-        options.headers = {
-          ...options.headers,
-          'content-encoding': 'gzip',
-        };
+      const headers: Record<string, string> = { ...options.headers };
 
+      if (request.body.length > GZIP_THRESHOLD) {
+        headers['content-encoding'] = 'gzip';
         body = body.pipe(createGzip());
       }
 
       const req = httpModule.request(
         {
           method: 'POST',
           agent,
-          headers: options.headers,
+          headers,
           hostname,
           path: `${pathname}${search}`,
           port,

packages/node/test/transports/http.test.ts

@@ -42,8 +42,6 @@ function setupTestServer(
 
     const stream = req.headers['content-encoding'] === 'gzip' ? req.pipe(createGunzip({})) : req;
 
-    stream.on('error', () => {});
-
     stream.on('data', data => {
       chunks.push(data);
     });