Additional bytes in HTTP handshake

[steve-nester-uk]

Describe the bug I'm trying to test socket.io with GoLang v1.7.0. The client is making the HTTP request to establish the connection but it's failing. Upon inspecting the http request in browser tools, I can see additional bytes in response. After adding Gin middleware to expect the being returned by the server, I can confirm the server is sending these additional bytes.

After a while the server is outputting "meet error: write: timeout", which is presumably because it is waiting for the client to respond.

To Reproduce Server side:

• go mod init myproject
• go get github.com/googollee/go-socket.io@v1.7.0

Client side: React npm install socket.io-client

Expected behavior There should not be additional bytes in front of the JSON.

Environment (please complete the following information):

• Go version: v1.18.1 (also later tried to update to v1.21.1 but getting the same issue)
• Server version: go-socket.io v1.7.0
• Client version: socket.io-client v4.7.2

Additional context Add any other context about the problem here.

[dirname]

use "socket.io-client": "^2.5.0" instead.

[googollee]

archived.