fix bug: issue #341

[yihexi]

fix bug :
Dial got error "failed to WebSocket dial: response body is not a io.ReadWriteCloser: *http.cancelTimerBody" when set http.DefaultClient.Timeout #341

[lexuzieel]

Just got the same error when I was using http.DefaultClient prior to dialing a websocket connection.
I solved it by creating my own *http.Client instance and setting Timeout there:

httpClient := &http.Client{
  Timeout: 10 * time.Second,
}

[nhooyr]

@MajorLettuce That shouldn't have worked either though. DefaultClient is a *http.Client.

@yihexi This code won't compile, we need to be able to write to the connection.