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GitHub - tidwall/SwiftWebSocket: Fast Websockets in Swift for iOS and OSX
Fast Websockets in Swift for iOS and OSX. Contribute to tidwall/SwiftWebSocket development by creating an account on GitHub.
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GitHub - tidwall/SwiftWebSocket: Fast Websockets in Swift for iOS and OSX

GitHub - tidwall/SwiftWebSocket: Fast Websockets in Swift for iOS and OSX

 SwiftWebSocket

API Docs Swift/5.0 Build Status

Conforming WebSocket (RFC 6455) client library for iOS and Mac OSX.

SwiftWebSocket passes all 521 of the Autobahn's fuzzing tests, including strict UTF-8, and message compression.

Project Status

I'm looking for someone to help with or take over maintenance of this project.

Features

  • High performance.
  • 100% conforms to Autobahn Tests. Including base, limits, compression, etc. Test results.
  • TLS / WSS support. Self-signed certificate option.
  • The API is modeled after the Javascript API.
  • Reads compressed messages (permessage-deflate). RFC 7692
  • Send pings and receive pong events.
  • Strict UTF-8 processing.
  • binaryType property to choose between [UInt8] or NSData messages.
  • Zero asserts. All networking, stream, and protocol errors are routed through the error event.
  • iOS / Objective-C support.

Example

func echoTest(){
    var messageNum = 0
    let ws = WebSocket("wss://echo.websocket.org")
    let send : ()->() = {
        messageNum += 1
        let msg = "\(messageNum): \(NSDate().description)"
        print("send: \(msg)")
        ws.send(msg)
    }
    ws.event.open = {
        print("opened")
        send()
    }
    ws.event.close = { code, reason, clean in
        print("close")
    }
    ws.event.error = { error in
        print("error \(error)")
    }
    ws.event.message = { message in
        if let text = message as? String {
            print("recv: \(text)")
            if messageNum == 10 {
                ws.close()
            } else {
                send()
            }
        }
    }
}

Custom Headers

var request = URLRequest(url: URL(string:"ws://url")!)
request.addValue("AUTH_TOKEN", forHTTPHeaderField: "Authorization")
request.addValue("Value", forHTTPHeaderField: "X-Another-Header")
let ws = WebSocket(request: request)

Reuse and Delaying WebSocket Connections

v2.3.0+ makes available an optional open method. This will allow for a WebSocket object to be instantiated without an immediate connection to the server. It can also be used to reconnect to a server following the close event.

For example,

let ws = WebSocket()
ws.event.close = { _,_,_ in
    ws.open()                 // reopen the socket to the previous url
    ws.open("ws://otherurl")  // or, reopen the socket to a new url
}
ws.open("ws://url") // call with url

Compression

The compression flag may be used to request compressed messages from the server. If the server does not support or accept the request, then connection will continue as normal, but with uncompressed messages.

let ws = WebSocket("ws://url")
ws.compression.on = true

Self-signed SSL Certificate

let ws = WebSocket("ws://url")
ws.allowSelfSignedSSL = true

Network Services (VoIP, Video, Background, Voice)

// Allow socket to handle VoIP in the background.
ws.services = [.VoIP, .Background] 

Installation (iOS and OS X)

Carthage

Add the following to your Cartfile:

github "tidwall/SwiftWebSocket"

Then run carthage update.

Follow the current instructions in Carthage's README for up to date installation instructions.

The import SwiftWebSocket directive is required in order to access SwiftWebSocket features.

CocoaPods

Add the following to your Podfile:

use_frameworks!
pod 'SwiftWebSocket'

Then run pod install with CocoaPods 0.36 or newer.

The import SwiftWebSocket directive is required in order to access SwiftWebSocket features.

Manually

Copy the SwiftWebSocket/WebSocket.swift file into your project.
You must also add the libz.dylib library. Project -> Target -> Build Phases -> Link Binary With Libraries

There is no need for import SwiftWebSocket when manually installing.

Contact

Josh Baker @tidwall

License

SwiftWebSocket source code is available under the MIT License.

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