matryer/goblueprints

ServeHTTP:websocket: could not find connection header with token 'upgrade'

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ridofself commented

The sever compiled from chapter 1 quits with the error:

ServeHTTP:websocket: could not find connection header with token 'upgrade'

when run as root on port 80, after a user on a different network connects to it. The server is run with the command:

sudo ./chat -addr=":80"

and the server runs fine, works with clients connecting from within the network, but crashes with that error when a client connects from another network..

I assume this is a configuration issue -- some trouble upgrading from http to websocket, but what is causing the problem?

matryer commented

see #26 - it's out of scope of the book, but it looks like people have solved it in various ways.

  • 👎1
ksexton commented

Just a heads up, this appears to be an issue if you try accessing the URL without the trailing slash. Use http://localhost:3000/room/ and the program doesn't crash.

  • 👍2