Can't connect to websocket : received bad response code from server 422

[tomasimartin]

Hi. I get an error while trying to connect to websocket, here is the code:

if let url = NSURL(string: hostws) {
            socketClient.openSocketWithURLRequest(request: NSURLRequest(url: url as URL), delegate: self)
        }

Response:

Error Domain=SRWebSocketErrorDomain Code=2132 "received bad response code from server 422" UserInfo={NSLocalizedDescription=received bad response code from server 422, HTTPResponseStatusCode=422}

And if I use another "Starscream" library, it connects very well with the same url, but I need the "STOMP" part that this other library doesn't have

Do you have any ideas why that might be the case?

[WrathChaos]

Hello @tomasimartin,
Thank you for using the StompClientLib. Actually it is a problem with your backend side.

Here is What Is 422 Unprocessable Entity? article about the bad response. Please contact with your backend devs :) However, I'm also here to help, discuss your problem :)
Have fun!

[tomasimartin]

hello @WrathChaos
The same API is used in Kotlin (Android) and also in Java, on the same url. It works perfectly on both environments.

As I said in my previous message, I used another library to make websocket, and with the same url on that library it works.

That's why I'm focusing my research here. Has anyone ever encountered this problem?

[WrathChaos]

Actually there are some similar issues. Some related issues:
#30
#39
#68

I know that it could work on Android however, iOS requires so many different things to do :( I believe that you need to research about it. Currently, it works with my example project & other recent projects. Have you ever tried with simple example project?

[tomasimartin]

@WrathChaos thanks for your quick feedback, we found the problem internally, it was a server side headers check. I hope I didn't disturb you too much. Well, hello from France. you can close this issue

[WrathChaos]

@tomasimartin I'm glad to hear that :) You're always welcome to come & brainstorm :) Please feel free to ask anything :)

[tomasimartin]

Hi @WrathChaos ,

we found out where the problem came from, when connecting there is an http call where we pass in the header

HEADER={{"host":["dev.myserver.fr"], "sec-websocket-protocol":["], "sec-websocket-key":["M6rALuZT9o3NRROXksQ==="], "sec-websocket-version":["13"], "upgrade":["websocket"], "origin":["http://dev.myserver.fr], "connection":["Upgrade"]}

but I don't find in this header the parameters I added during the connection:

let headerWS = ["deviceId":deviceToken]
socketClient.openSocketWithURLRequest(request: NSURLRequest(url: url as URL), delegate: self, connectionHeaders: headerWS)

it can come from the SocketRocket library, the initial call to the connection is made without taking into account the header.

I'm not good enough in objective-c to modify the lib myself.

Do you have an idea to pass my header ["deviceId":deviceToken], during the initial call