WebSocket Custom Port Setting

[Anonymous]

Hi.

I am trying to use the WICED's web socket API. I see that in the web socket library, the default port is set to port 80.

Also, I need some example apps for web socket.

Please help.

Thanks!

Regards,

Manish

[Anonymous]

I finally got some basic WebSocket Application up and running.

Before this, there are some changes that need to be done in the underlying WebSockets library.

In libraries/protocols/websocket/

(1) websocket.c: add the custom port that where the WebSocket server is listening to:

In function: static wiced_result_t websocket_connect( wiced_websocket_t* websocket, wiced_ip_address_t* address ), update the port:

result = wiced_tcp_connect( &websocket->socket, address, CUSTOM_SERVER_PORT, 10000 );

(2) web socket_handshake.c, add the port setting into the tcp stream:

/* < Host: ip1.ip2.ip3.ip4 >*/

    wiced_tcp_stream_write( &stream, "Host: ", (uint16_t) strlen( "Host: " ) );

    wiced_tcp_stream_write( &stream, websocket_header_fields->host, (uint16_t) strlen( websocket_header_fields->host ) );

  wiced_tcp_stream_write( &stream, ":CUSTOM_SERVER_PORT", (uint16_t) strlen(":8080" ) );

    wiced_tcp_stream_write( &stream, "\r\n", (uint16_t) strlen( "\r\n" ) );

Please remember to use the native web socket server not a socket.io wrapper upon web sockets running on your AWS.

I also added two more DNS servers 8.8.8.8 and 8.8.4.4 to get consistent success in DNS resolution.

Please find a minimal app attached. We hosted a sample web socket server on EC2. We also verified our app using the demo client hosted by web socket.org: See websocket.org Echo Test - Powered by Kaazing

Please change the WEBSOCKET_SERVER_IP_STRING to point to your EC2 IP address that hosts the web socket server. Also, I have currently hardcoded my server port into the web socket library. You can however, pass it along from the application to the library.

[Anonymous]

Folks, the web socket library is broken and has not been fixed since 3.1.2 (almost over a year). Until that is fixed, this web socket client is useless.

[MichaelF_56]

mkochhal​

According to the developers, this has been fixed and taken care in SDK 3.5.x onwards

[Anonymous]

Then can you please provide a sample application that would help ensure that the underlying WebSockets API is being used properly.

[Anonymous]

Sorry - here also is the link to the client Beginners guide to ZentriOS : Websockets (Client)

[enel_2129601]

Hi,

i have trouble to run the attached code in the page. When i change

#define WEBSOCKET_SERVER_IP_STRING       "ws://echo.websocket.org"

as the following then i assume that it will connect an echo server however, i have trouble to connect such a server. So what do you suggest for this issue. Do you suggest any solution related with this application.

Best Wishes

[Anonymous]

What is the port you are using ... I can try with this URL and see if this application works for me.

[Anonymous]

Hi.

Can you define your web socket server string as:

#define WEBSOCKET_SERVER_IP_STRING        "echo.websocket.org"

Also check your port.

Underlying protocol has been heavily debugged with printfs and changed to recover incase of errors ...

[enel_2129601]

mkochhal​ i have tried to do what you have stated however there is nothing changed:

#define WEBSOCKET_SERVER_IP_STRING        "echo.websocket.org"

#define WEBSOCKET_PORT   8080 //3000.

there is one more place maybe need to change which is

websocket_handshake_fields.request_uri = "ws://54.193.101.214/";//socket.io/?transport=polling&b64=1";

what do you suggest now.

The procedure i have applied is the following:

i have downloaded code and insert wiced folder

then i changed the required changes in websocket.c and other file.

then i changed server_ip_string

then i run the code check with real term.

see error:Websocket

Thank you

[user_2177781]

Did anybody get this to work with the echo.websocket.org server?

Regards

Renejos

[Anonymous]

If you are interested to see how to do this with ZentriOS which is makes certain functions of WICED a little easier to use, I have published two tutorials in the 'Beginners guide to ZentriOS' blog.

The first is about focused on running a server on the device (Beginners guide to ZentriOS : Websockets (Server), the second is about running a client.

Hope it helps!