iOS使用CocoaAsyncSocket框架socket通信的

本文是根据iOS使用CocoaAsyncSocket框架socket通信的demo,自己做些笔记,方便自己阅读;如有冒犯,烦请和本人沟通,我将立即撤下文章.

客户端

//
//  ViewController.m
//  SocketClient
//
//  Created by Edward on 16/6/24.
//  Copyright © 2016年 Edward. All rights reserved.
//

#import "ViewController.h"
#import "GCDAsyncSocket.h"
@interface ViewController ()<GCDAsyncSocketDelegate>
@property (weak, nonatomic) IBOutlet UITextField *addressTF;
@property (weak, nonatomic) IBOutlet UITextField *portTF;
@property (weak, nonatomic) IBOutlet UITextField *messageTF;
@property (weak, nonatomic) IBOutlet UITextView *showMessageTF;
//客户端socket
@property (nonatomic) GCDAsyncSocket *clinetSocket;

@end

@implementation ViewController
#pragma mark - GCDAsynSocket Delegate

/**
 链接成功
 */
- (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port{
    
    [self showMessageWithStr:@"链接成功"];
    [self showMessageWithStr:[NSString stringWithFormat:@"服务器IP ： %@", host]];
    [self.clinetSocket readDataWithTimeout:-1 tag:0];
}

/**
 收到消息
 */

- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
    
    NSString *text = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    [self showMessageWithStr:text];
    [self.clinetSocket readDataWithTimeout:-1 tag:0];
}

#pragma - 连接,发送,接收消息



//开始连接
- (IBAction)connectAction:(id)sender {
    //2、连接服务器
    [self.clinetSocket connectToHost:self.addressTF.text onPort:self.portTF.text.integerValue withTimeout:-1 error:nil];
}

//发送消息
- (IBAction)sendMessageAction:(id)sender {
    NSData *data = [self.messageTF.text dataUsingEncoding:NSUTF8StringEncoding];
    //withTimeout -1 :无穷大
    //tag： 消息标记
    [self.clinetSocket writeData:data withTimeout:-1 tag:0];
}

//接收消息
- (IBAction)receiveMessageAction:(id)sender {
    
    [self.clinetSocket readDataWithTimeout:11 tag:0];
}

- (void)showMessageWithStr:(NSString *)str{
    
    self.showMessageTF.text = [self.showMessageTF.text stringByAppendingFormat:@"%@\n", str];
}


#pragma - 其他的一些附加操作

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    
    [self.view endEditing:YES];
}

#pragma - lazy

-(GCDAsyncSocket *)clinetSocket{
    
    if (_clinetSocket == nil) {

        _clinetSocket = [[GCDAsyncSocket alloc]initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
    }
    
    return _clinetSocket;
}

@end

服务器

//
//  ViewController.m
//  SocketServer
//
//  Created by Edward on 16/6/24.
//  Copyright © 2016年 Edward. All rights reserved.
//

#import "ViewController.h"
#import "GCDAsyncSocket.h"
@interface ViewController ()<GCDAsyncSocketDelegate>
@property (weak, nonatomic) IBOutlet UITextField *portF;
@property (weak, nonatomic) IBOutlet UITextField *messageTF;
@property (weak, nonatomic) IBOutlet UITextView *showContentMessageTV;

//服务器socket（开放端口，监听客户端socket的链接）
@property (nonatomic) GCDAsyncSocket *serverSocket;

//保护客户端socket
@property (nonatomic) GCDAsyncSocket *clientSocket;

@end

@implementation ViewController

#pragma -按钮的一些操作
//发送消息
- (IBAction)sendMessage:(id)sender {
    NSData *data = [self.messageTF.text dataUsingEncoding:NSUTF8StringEncoding];
    //withTimeout -1:无穷大，一直等
    //tag:消息标记
    [self.clientSocket writeData:data withTimeout:-1 tag:0];
}

//开始监听
- (IBAction)startReceive:(id)sender {
    //2、开放哪一个端口
    NSError *error = nil;
    BOOL result = [self.serverSocket acceptOnPort:self.portF.text.integerValue error:&error];
    if (result && error == nil) {
        //开放成功
        [self showMessageWithStr:@"开放成功"];
    }
}

//接受消息,socket是客户端socket，表示从哪一个客户端读取消息
- (IBAction)ReceiveMessage:(id)sender {
    [self.clientSocket readDataWithTimeout:11 tag:0];
}

- (void)showMessageWithStr:(NSString *)str{
    self.showContentMessageTV.text = [self.showContentMessageTV.text stringByAppendingFormat:@"%@\n",str];
}


#pragma mark - 服务器socket Delegate

/**
 连接成功
 */
- (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket{
    
    //保存客户端的socket
    self.clientSocket = newSocket;
    [self showMessageWithStr:@"链接成功"];
    [self showMessageWithStr:[NSString stringWithFormat:@"服务器地址：%@ -端口： %d", newSocket.connectedHost, newSocket.connectedPort]];
    [self.clientSocket readDataWithTimeout:-1 tag:0];
}


/**
 接收到消息
 */
- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{
    
    NSString *text = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    [self showMessageWithStr:text];
    [self.clientSocket readDataWithTimeout:-1 tag:0];
}


#pragma - lazy


-(GCDAsyncSocket *)serverSocket{
    
    if (_serverSocket == nil) {
        
        
        _serverSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
    }
    return _serverSocket;
}


@end

使用步骤

1. 分别运行两个项目
2. 在服务器段点击开始监听,出现开发成功
3. 获取本机的IP地址,客户端输入地址,点击开始连接,显示链接成功
4. 可以互相发消息了

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服务器端

服务器端

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客户端

demo

SocketServer-master

SocketClient

参考文献

iOS使用CocoaAsyncSocket框架socket通信的demo