Connection closed before receiving a handshake response #12

mkkhedawat · 2015-07-22T13:22:46Z

I simply did

git clone https://github.com/eidheim/Simple-WebSocket-Server.git

Then compiled in linux

g++ -O3 -std=c++1y ws_examples.cpp -lboost_system -lcrypto -lpthread -o ws_examples

Wrote a sample JS client as specified in documentation

<!Doctype html>
<html>
    <head>
        <title>
            Web Socket 
        </title>
   </head>
<body>
    <script>

var ws=new WebSocket("ws://localhost:8080/echo");
ws.onmessage=function(evt){console.log(evt.data);};
ws.send("test");


    </script>
</body>
</html>

But when I run client and server, It gives error

Uncaught InvalidStateError: Failed to execute 'send' on 'WebSocket': Still in CONNECTING state.
WebSocket connection to 'ws://localhost:8080/echo' failed: Connection closed before receiving a handshake response

Can you please direct where is things going wrong ?

Ubuntu 14
Boost 0.9.8
No trace was received on server side

eidheim · 2015-07-22T13:27:23Z

You need to wait for the connection to establish, so instead of the line ws.send("test") do something like this:

ws.onopen=function(evt){
  ws.send("test");
}

mkkhedawat · 2015-07-22T13:32:06Z

No, That is resolving only

Failed to execute 'send' on 'WebSocket': Still in CONNECTING state.

That was understood.

But Handshake Error is still there

WebSocket connection to 'ws://localhost:8080/echo' failed: Connection closed before receiving a handshake response

eidheim · 2015-07-22T13:59:43Z

What browser do you use? This happens when you reload (and maybe leave) the page while having an open websocket connection. Just means that you have not closed it. To remove the message I guess you can do a ws.close() when the page unloads, but I do not know the JavaScript code for this.

mkkhedawat · 2015-07-22T14:19:05Z

I am using chrome.
On Firefox it says

Firefox can't establish a connection to the server at ws://localhost:8080/echo.

I am not reloading or navigating away.
Web-socket connection is not being established I believe.
If it did , shouldn't I get trace in serve side ?

eidheim · 2015-07-22T14:35:33Z

Try this html file from a similar issue posted on this project:

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>WebSocket Test</title>
</head>
<body>
<script>
window.onload=function(){
  var ws=new WebSocket("ws://localhost:8080/echo");
  ws.onmessage=function(evt){console.log(evt.data);};
  ws.onopen=function(evt){
    ws.send("test");
    setTimeout(function(){ws.close();}, 1000);
  }
}
</script>
</body>
</html>

This one closes the connection after 1 sec, also the charset is set and its using the window.onload function. And yes you should see output on the terminal running ws_examples.

mkkhedawat · 2015-07-23T05:48:19Z

Nah ! Same error. Is it still working at your system ? Please use the same steps as me.
If yes tell me the configs ?

eidheim · 2015-07-23T08:16:23Z

Yes this is working on Debian stable, testing and OS X. Do you get output when you start ./ws_examples?

eidheim · 2015-07-23T08:18:12Z

Also please try cmake .;make;make test and see if the tests are passed.

eidheim · 2015-07-23T08:21:14Z

You can also open the console in Chrome, and type in the JavaScript commands yourself:

var ws=new WebSocket("ws://localhost:8080/echo");
ws.onmessage=function(evt){console.log(evt.data);};
ws.send("test"); //try this line again if the connection is not up yet.

mkkhedawat · 2015-07-23T09:14:35Z

I do not get anything on running ./ws_examples

When I do cmake, It ask for compiler 4.9.
I have 4.8.2 installed on Ubuntu 14. It was able to get compiled via traditional method.

eidheim · 2015-07-23T09:21:59Z

Strange you managed to compile it on g++ 4.8, I think regex was not supported before 4.9, and that is why you need g++ 4.9. I think it should be possible to install this on Ubuntu. Maybe do an upgrade on your system? g++ 4.9 is available in debian stable now, and should thus be installable on all its derivatives like Ubuntu (hopefully).

ZX-Diablo · 2015-07-23T09:34:39Z

I've made g++4.8 compilable fork but haven't updated code for a long time thou

mkkhedawat · 2015-07-23T09:41:58Z

Okay , It seems the issue here then.

It was compiling with g++ 4.8.2 and running but not giving any traces.
But when compiled with 4.9 , it is running fine.

Thanks for your time.

Closing Issue :)

taimur38 · 2017-06-11T22:03:16Z

I'm having this issue currently, and am running on windows.
Visual Studio 2015, I'm just pointing to Simple-WebSocket-Server in AdditionalIncludeDirectories.

Any ideas on how I can get around this? Looks like I might just need to update visual studio

mkkhedawat closed this as completed Jul 23, 2015

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Connection closed before receiving a handshake response #12

Connection closed before receiving a handshake response #12

mkkhedawat commented Jul 22, 2015

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taimur38 commented Jun 11, 2017 •

edited

Connection closed before receiving a handshake response #12

Connection closed before receiving a handshake response #12

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mkkhedawat commented Jul 22, 2015

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taimur38 commented Jun 11, 2017 • edited

taimur38 commented Jun 11, 2017 •

edited