iOS中的socket通信

来源：互联网发布：21级研究所升级数据编辑：程序博客网时间：2024/06/05 06:37

iOS中的socket通信，用到了AsyncSocket开源的框架，不错，挺好用的。

OC: (Client)

- (void) connectButtonPressed {

if (!asyncSocket) {

asyncSocket = [[AsyncSocket alloc] initWithDelegate:self];

NSError *err = nil;

if(![asyncSocket connectToHost:@"192.168.1.103" onPort:25001withTimeout:10 error:&err]) {

NSLog(@"Error: %@", err);

}

- (void) sendButtonPressed {

NSData* aData= [inputTextView.text dataUsingEncoding: NSUTF8StringEncoding];

[asyncSocket writeData:aData withTimeout:-1 tag:1];

}

-(void)ontime{

[asyncSocket readDataWithTimeout:-1 tag:0];

}

- (void)onSocket:(AsyncSocket *)sock didConnectToHost:(NSString *)host port:(UInt16)port

{

NSLog(@"onSocket:%p didConnectToHost:%@ port:%hu", sock, host, port);

//Add timer.

timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:selfselector:@selector(ontime) userInfo:nil repeats:YES];

}

-(void) onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag

{

NSString* aStr = [[NSString alloc] initWithData:dataencoding:NSUTF8StringEncoding];

messageTextView.text =[NSString stringWithFormat:@"%@ \n Server: %@",messageTextView.text, aStr];;

[aStr release];

}

- (void)onSocket:(AsyncSocket *)sock didSecure:(BOOL)flag

{

NSLog(@"onSocket:%p didSecure:YES", sock);

}

- (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err

{

NSLog(@"onSocket:%p willDisconnectWithError:%@", sock, err);

[timer invalidate];

timer = nil;

}

- (void)onSocketDidDisconnect:(AsyncSocket *)sock

{

//断开连接了

NSLog(@"onSocketDidDisconnect:%p", sock);

}

-(void)onSocket:(AsyncSocket *)sock didWriteDataWithTag:(long)tag

{

NSLog(@"thread(%@),onSocket:%p didWriteDataWithTag:%ld",[[NSThreadcurrentThread] name],sock, tag);

}

C#: (Server)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Collections;

namespace SocketServer
{
public partial class Form1 : Form
{

        private IPAddress clientIP = IPAddress.Parse("192.168.1.103");//以本机作测试
        private IPEndPoint serverfulladdr;//完整终端地址
        private Socket sock;
        private System.Timers.Timer mytimer;
        private ArrayList alsock;//当建立了多个连接时用于保存连接

        public Form1()
        {
            InitializeComponent();
        }

private void btstart_Click(object sender, EventArgs e)
{

serverfulladdr = new IPEndPoint(clientIP, 25001);//取端口号1000

//构造socket对象，套接字类型为“流套接字”，指定五元组中的协议元

sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

//指定五元组中的本地二元，即本地主机地址和端口号

sock.Bind(serverfulladdr);

//监听是否有连接传入，指定挂起的连接队列的最大值为20

sock.Listen(20);

alsock = new ArrayList();

//构造定时器，时间间隙为1秒，即每隔一秒执行一次accept()方法，以获取连接请求队列中//第一个挂起的连接请求
mytimer = new System.Timers.Timer(1000);

mytimer.Elapsed += new System.Timers.ElapsedEventHandler(mytimer_elapsed);

mytimer.Enabled = true;

}

private void mytimer_elapsed(object sender, System.Timers.ElapsedEventArgs e)
{

mytimer.Enabled = false;

//执行accept()，当挂起队列为空时将阻塞本线程，同时由于上一语句，定时器将停止，直//至有连接传入

Socket acceptsock = sock.Accept();

//将accept()产生的socket对象存入arraylist

alsock.Add(acceptsock);

// 构造threading.timer对象，这将导致程序另启线程。线程将执行回调函数，该委托限制//函数参数须为object型。threading.timer构造器的第二个参数即传入回调函数的参数；第//三个参数指定调用回调函数之前的延时，取0则立即启动；最后一个参数指定调用回调函数//的时间间隔，取0则只执行一次。

System.Threading.Timer ti = new System.Threading.Timer(new System.Threading.TimerCallback(receivemsg), acceptsock, 0, 0);

mytimer.Enabled = true;

}

private void receivemsg(object obj)
{

Socket acceptsock = (Socket)obj;

try
{

while (true)
{

byte[] bytearray = new byte[100];

acceptsock.Receive(bytearray);//接收数据

//将字节数组转成字符串

string strrec = System.Text.Encoding.UTF8.GetString(bytearray);

if (this.rtbreceive.InvokeRequired)
{

this.rtbreceive.Invoke(new EventHandler(this.changericktextbox), new object[] { strrec, EventArgs.Empty });

}

catch (Exception ex)
{

acceptsock.Close();

MessageBox.Show("s:receive message error" + ex.Message);

}

private void changericktextbox(object obj, EventArgs e)
{

string s = System.Convert.ToString(obj);

this.rtbreceive.AppendText(s + Environment.NewLine);

}

private void btsend_Click(object sender, EventArgs e)
{

Socket sc = null;

byte[] bytesend = System.Text.Encoding.UTF8.GetBytes(this.txtinput.Text.ToCharArray());

try
{

//同时存在若干个客户端连接时，需要确定是哪个连接，因为我的调试都是一个连接，所以直接用0

sc = (Socket)alsock[0];

//发送数据

sc.Send(bytesend);

}

catch (Exception ex)
{

                if (sc != null)
                {
                    sc.Close();
                }

                MessageBox.Show("s:send message error" + ex.Message);
            }
        }

private void btclose_Click(object sender, EventArgs e)
{

            try
            {
                Application.Exit();
            }

            catch (Exception ex)
            {
                MessageBox.Show("s:close socket error" + ex.Message);
            }

}

}
}

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