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# CocoaAsyncSocket

[![Build Status](https://travis-ci.org/robbiehanson/CocoaAsyncSocket.svg?branch=master)](https://travis-ci.org/robbiehanson/CocoaAsyncSocket) [![Version Status](https://img.shields.io/cocoapods/v/CocoaAsyncSocket.svg?style=flat)](http://cocoadocs.org/docsets/CocoaAsyncSocket) [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage) [![Platform](http://img.shields.io/cocoapods/p/CocoaAsyncSocket.svg?style=flat)](http://cocoapods.org/?q=CocoaAsyncSocket) [![license Public Domain](https://img.shields.io/badge/license-Public%20Domain-orange.svg?style=flat)](https://en.wikipedia.org/wiki/Public_domain)

CocoaAsyncSocket provides easy-to-use and powerful asynchronous socket libraries for macOS, iOS, and tvOS. The classes are described below.

## Installation

#### CocoaPods

Install using [CocoaPods](https://cocoapods.org) by adding this line to your Podfile:

````ruby

use_frameworks! # Add this if you are targeting iOS 8+ or using Swift

pod 'CocoaAsyncSocket'  

````

#### Carthage

CocoaAsyncSocket is [Carthage](https://github.com/Carthage/Carthage) compatible. To include it add the following line to your `Cartfile`

```bash

github "robbiehanson/CocoaAsyncSocket" "master"

```

The project is currently configured to build for **iOS**, **tvOS** and **Mac**.  After building with carthage the resultant frameworks will be stored in:

* `Carthage/Build/iOS/CocoaAsyncSocket.framework`

* `Carthage/Build/tvOS/CocoaAsyncSocket.framework`

* `Carthage/Build/Mac/CocoaAsyncSocket.framework`

Select the correct framework(s) and drag it into your project.

#### Swift Package Manager

Simply add the package dependency to your Package.swift and depend on "CocoaAsyncSocket" in the necessary targets:

```swift

dependencies: [

    .package(url: "https://github.com/robbiehanson/CocoaAsyncSocket", from: "7.6.4")

]

```

#### Manual

You can also include it into your project by adding the source files directly, but you should probably be using a dependency manager to keep up to date.

### Importing

Using Objective-C:

```obj-c

// When using Clang Modules:

@import CocoaAsyncSocket; 

// or when not:

#import "GCDAsyncSocket.h" // for TCP

#import "GCDAsyncUdpSocket.h" // for UDP

```

Using Swift:

```swift

import CocoaAsyncSocket

```

## TCP

**GCDAsyncSocket** is a TCP/IP socket networking library built atop Grand Central Dispatch. Here are the key features available:

- Native Objective-C, fully self-contained in one class.<br/>

  _No need to muck around with sockets or streams. This class handles everything for you._

- Full delegate support<br/>

  _Errors, connections, read completions, write completions, progress, and disconnections all result in a call to your delegate method._

- Queued non-blocking reads and writes, with optional timeouts.<br/>

  _You tell it what to read or write, and it handles everything for you. Queueing, buffering, and searching for termination sequences within the stream - all handled for you automatically._

- Automatic socket acceptance.<br/>

  _Spin up a server socket, tell it to accept connections, and it will call you with new instances of itself for each connection._

- Support for TCP streams over IPv4 and IPv6.<br/>

  _Automatically connect to IPv4 or IPv6 hosts. Automatically accept incoming connections over both IPv4 and IPv6 with a single instance of this class. No more worrying about multiple sockets._

- Support for TLS / SSL<br/>

  _Secure your socket with ease using just a single method call. Available for both client and server sockets._

- Fully GCD based and Thread-Safe<br/>

  _It runs entirely within its own GCD dispatch_queue, and is completely thread-safe. Further, the delegate methods are all invoked asynchronously onto a dispatch_queue of your choosing. This means parallel operation of your socket code, and your delegate/processing code._

## UDP

**GCDAsyncUdpSocket** is a UDP/IP socket networking library built atop Grand Central Dispatch. Here are the key features available:

- Native Objective-C, fully self-contained in one class.<br/>

  _No need to muck around with low-level sockets. This class handles everything for you._

- Full delegate support.<br/>

  _Errors, send completions, receive completions, and disconnections all result in a call to your delegate method._

- Queued non-blocking send and receive operations, with optional timeouts.<br/>

  _You tell it what to send or receive, and it handles everything for you. Queueing, buffering, waiting and checking errno - all handled for you automatically._

- Support for IPv4 and IPv6.<br/>

  _Automatically send/recv using IPv4 and/or IPv6. No more worrying about multiple sockets._

- Fully GCD based and Thread-Safe<br/>

  _It runs entirely within its own GCD dispatch_queue, and is completely thread-safe. Further, the delegate methods are all invoked asynchronously onto a dispatch_queue of your choosing. This means parallel operation of your socket code, and your delegate/processing code._

***

For those new(ish) to networking, it's recommended you **[read the wiki](https://github.com/robbiehanson/CocoaAsyncSocket/wiki)**.<br/>_Sockets might not work exactly like you think they do..._

**Still got questions?** Try the **[CocoaAsyncSocket Mailing List](https://groups.google.com/group/cocoaasyncsocket)**.

***

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