Code Quality Rank: L4
Programming language: Swift
License: MIT License
Latest version: v2.2.0

RxWebSocket alternatives and similar libraries

Based on the "Reactive Programming" category.
Alternatively, view RxWebSocket alternatives based on common mentions on social networks and blogs.

Do you think we are missing an alternative of RxWebSocket or a related project?

Add another 'Reactive Programming' Library



Build Status codecov PRs welcome Carthage compatible SPM compatible Version License Platform

Reactive extensions for websockets.

A lightweight abstraction layer over Starscream to make it reactive.


RxWebSocket is available through CocoaPods and Carthage. To install it, simply add the following line to your depedencies file:

pod "RxWebSocket"
github "fjcaetano/RxWebSocket"


Every websocket event will be sent to the stream which is an Observable<StreamEvent>.

  public enum StreamEvent {
    case connect
    case disconnect(Error?)
    case pong
    case text(String)
    case data(Data)

You may receive and send text events by subscribing to the text property:

let label = UILabel()
    .bind(to: label.rx.text)

    .flatMap { textField.text ?? "" }
    .bind(to: socket.rx.text)

For further details, check the Example project.


After cloning the project, pull all submodules with

git submodule update --init --recursive


RxWebSocket relies on the following for development:

To install all dependencies without hassles just run:


Which will install all the dependencies and virtual envs if necessary.

Running Tests

Xcode and Fastlane will take care of starting and stopping websocket echoservers for testing, however if you find that tests are timing out, this is usually a sign that the server is not running. If so, you can manage it running

./server.sh {start|stop|restart|status}

This will tell wstests to launch an echo server on If this port is unusable for you by any reason, you may change it in the server.sh file.

Upgrading to a new Swift version

Upgrading a new Swift version requires upgrading the dependencies as well. Since the RxWebSocket is distributed through Cocoapods, Carthage and Swift Package Manager, the dependencies must be upgraded in the corresponding spec file for the three platforms:


In RxWebSocket.podspec, update swift_version and the dependencies' versions at the end of the file


Upgrade the dependencies' versions in Cartfile

Swift Package Manager

Upgrade the dependencies' versions in Package.swift


Before commiting, make sure to run, at least, the test lane on Fastlane. This will run all iOS tests.

If you want to be thorough, which is recommended and appreciated, run the ci lane, which is the same lane Travis runs when testing PRs. This lane will run tests for iOS, tvOS and macOS, as well as lint the project for the three package managers. If this lane passes, you can be 100% sure everything is running as smoothly as possible.

Help Wanted

Do you love RxWebsocket and work actively on apps that use it? We'd love if you could help us keep improving it! Feel free to message us or to start contributing right away!


RxWebSocket is available under the MIT license. See the LICENSE file for more info.

*Note that all licence references and agreements mentioned in the RxWebSocket README section above are relevant to that project's source code only.