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(Swift 2) Duplicate Python websockets

See more WebSocket Examples

Demonstrates how to duplicate the following Python client-side websocket snippet:

async with websockets.connect('ws://192.168.1.35/websocket') as websocket:
await websocket.send("http.controller_login:username=xxx&password=xxxxx")
response = await websocket.recv()

Chilkat Downloads for the Swift Programming Language

MAC OS X (Cocoa) Objective-C/Swift Libs

iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // In Python, the following line of code does more than just connect:
    // 
    //      websockets.connect('ws://192.168.1.35/websocket')
    // 
    // It is connecting to 192.168.1.35 without using TLS.  If the URI starts with "wss://", then TLS should be used.
    // But this URI begins with just "ws:/", so no TLS.

    // Also, after connecting, a GET request is sent to the /websocket endpoint.
    // In summary, the websockets.connect function is establishing the connection and it sends a GET request.

    // First establish the connection.
    // No TLS, use the default HTTP port 80.
    let rest = CkoRest()
    var success: Bool = rest.Connect("192.168.1.35", port: 80, tls: false, autoReconnect: false)
    if success != true {
        print("\(rest.LastErrorText)")
        return
    }

    let ws = CkoWebSocket()

    // Tell the WebSocket to use this connection.
    success = ws.UseConnection(rest)
    if success != true {
        print("\(ws.LastErrorText)")
        return
    }

    // Add the standard WebSocket open handshake headers that will be needed.
    // (This adds the required HTTP request headers to the rest object.)
    ws.AddClientHeaders()

    // Now send the GET request to /websockets.
    var responseBody: String? = rest.FullRequestNoBody("GET", uriPath: "/websockets")
    if rest.LastMethodSuccess != true {
        print("\(rest.LastErrorText)")
        return
    }

    // If successful, the HTTP response status code should be 101,
    // and the response body will be empty. (If it failed, we'll have a look
    // at the response body..)
    var statusCode: Int = rest.ResponseStatusCode.intValue
    print("Response status code: \(statusCode)")

    if statusCode != 101 {
        print("\(responseBody!)")
        print("-- Failed because of unexpected response status code.")
        return
    }

    // We have the expected 101 response, so let's now validate the 
    // contents of the response.
    success = ws.ValidateServerHandshake()
    if success != true {
        print("\(ws.LastErrorText)")
        return
    }

    print("WebSocket connection successful.")

    // The application may now begin sending and receiving frames on the WebSocket connection.

    // The 1st frame sent by the Python snippet is:
    // 
    //     websocket.send("http.controller_login:username=xxx&password=xxxxx")
    // 

    // Send the same using Chilkat, and get the response.
    var finalFrame: Bool = true
    success = ws.SendFrame("http.controller_login:username=xxx&password=xxxxx", finalFrame: finalFrame)
    if success != true {
        print("\(ws.LastErrorText)")
        return
    }

    // Read an incoming frame.
    success = ws.ReadFrame()
    if success != true {
        print("Failed to receive a frame")
        print("ReadFrame fail reason = \(ws.ReadFrameFailReason.intValue)")
        print("\(ws.LastErrorText)")
        return
    }

    // Show the string that was received.
    var receivedStr: String? = ws.GetFrameData()
    print("Received: \(receivedStr!)")

    // Continue with whatever additional communications are desired...
    // ....
    // 

}

 

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