IOS Socket Notes

iOS client:

Download the Asyncsocket Development Framework and drag it into the project

Establish

#import "ViewController.h"

#import <sys/socket.h>

#import <netinet/in.h>

#import <arpa/inet.h>

#import <unistd.h>

#import "AsyncSocket.h"

#define DEVW [[UIScreen mainscreen]bounds].size.width

@interface Viewcontroller ()

{

Asyncsocket *asysocket;

}

@end

@implementation Viewcontroller

-(void) Viewdidload {

[Super Viewdidload];

Asysocket = [[Asyncsocket alloc] initwithdelegate:self];

Nserror *err = nil;

if (! [Self socketopen:@ "172.16.1.92" port:1212])

{

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

}

Additional setup after loading the view, typically from a nib.

}

-(void) SendData: (UIButton *) click

{

Nsmutablestring *sendstring=[nsmutablestring stringwithcapacity:1000];

[sendstring appendstring:@ "Hello world!"];

NSData *cmddata = [sendstring datausingencoding:nsutf8stringencoding];

[Asysocket writedata:cmddata withtimeout:-1 tag:0];

    

}

Open it

-(Nsinteger) Socketopen: (nsstring*) addr port: (Nsinteger) port

{

if (![ Asysocket isconnected])

{

[Asysocket connecttohost:addr onport:port withtimeout:-1 Error:nil];

NSLog (@ "Connect to host:%@ port:%d", addr,port);

}

return 0;

}

-(void) Onsocket: (Asyncsocket *) sock willdisconnectwitherror: (Nserror *) err

{

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

}

-(void) Onsocketdiddisconnect: (Asyncsocket *) sock

{

NSLog (@ "Onsocketdiddisconnect");

}

-(void) Onsocket: (Asyncsocket *) sock didconnecttohost: (NSString *) host port: (UInt16) port

{

NSLog (@ "Didconnecttohost");

This is the asynchronous return of the connection success,

[sock readdatawithtimeout:-1 tag:0];

}

-(void) Onsocket: (Asyncsocket *) sock didreaddata: (NSData *) data withtag: (long) tag

{

NSString *msg = [[NSString alloc] Initwithdata:data encoding:nsutf8stringencoding];

if (msg)

{

Processing the data received

NSLog (@ "Data received:%@", msg);

}

Else

{

NSLog (@ "Error converting received data into UTF-8 String");

}

NSString *[email protected] "connected successfully";

NSData *cmddata = [message datausingencoding:nsutf8stringencoding];

[Sock Writedata:cmddata Withtimeout:-1 tag:0];

[sock readdatawithtimeout:-1 tag:0];

}

-(void) Onsocket: (Asyncsocket *) sock Didwritedatawithtag: (long) tag

{

NSLog (@ "didwritedatawithtag:%ld", tag);

[sock readdatawithtimeout:-1 tag:0];

}

C # Service side:

Server-side using system;using system.collections.generic;using system.componentmodel;using system.data;using System.drawing;using system.linq;using system.text;using system.windows.forms;using System.Net.Sockets;using        system.net;using system.threading;namespace server{public partial class Form1:form {Socket socketsend;            Public Form1 () {InitializeComponent ();        Checkforillegalcrossthreadcalls = false; }//Listen private void Button1_Click (object sender, EventArgs e) {Socket socketwatch = new S            Ocket (ADDRESSFAMILY.INTERNETWORK,SOCKETTYPE.STREAM,PROTOCOLTYPE.TCP);            IPAddress IP = ipaddress.any;            IPEndPoint point = new IPEndPoint (IP, Convert.ToInt32 (this.txtPort.Text));            Socketwatch.bind (point);            ShowMsg ("monitor success");            Monitor Socketwatch.listen (10);            Use threads to constantly listen for thread thread = new Thread (Listen); Thread.  IsBackground = true;          Thread.        Start (Socketwatch); }//Send message private void button2_click (object sender, EventArgs e) {string msg = This.txtmsg .            Text.trim ();            byte[] buffer = Encoding.UTF8.GetBytes (msg);        Socketsend.send (buffer);            }//Listener client socket void Listen (object o) {socket socketwatch = O as socket; while (true) {//waits for the client to connect and creates a socket for communication socketsend = Socketwatch.accept ()                ;                 ShowMsg (socketSend.RemoteEndPoint.ToString () + ":" + "connection successful");                Accept the message sent by the client thread thread = new thread (receive); Thread.                IsBackground = true; Thread.            Start (Socketsend);            }} void Receive (object o) {socket socketsend = O as socket;                while (true) {byte[] buffer = new BYTE[1024 * 1024 * 2]; Int r = socketsend.receive (buffer);                if (r = = 0) {break;                The string msg = Encoding.UTF8.GetString (buffer,0,r);            ShowMsg (socketSend.RemoteEndPoint.ToString () + ":" + msg);        }} void ShowMsg (String msg) {txtlog.appendtext (msg+ "\ r \ n"); }                }}

WinForm Client

Client using system;using system.collections.generic;using system.componentmodel;using system.data;using System.drawing;using system.linq;using system.text;using system.windows.forms;using System.Net.Sockets;using        system.net;using system.threading;namespace client{public partial class Form1:form {public Form1 ()            {InitializeComponent ();        Checkforillegalcrossthreadcalls = false;        } Socket Socketsend; private void Button1_Click (object sender, EventArgs e) {socketsend = new Socket (ADDRESSFAMILY.INTERNETW            ORK,SOCKETTYPE.STREAM,PROTOCOLTYPE.TCP);            Get the server IP IPAddress IP = ipaddress.parse (TxtIp.Text.Trim ());            Gets the port number IPEndPoint point = new IPEndPoint (IP, Convert.ToInt32 (TxtPort.Text.Trim ()));            Connection Server Socketsend.connect (point);            Open a thread that continuously accepts messages sent from the server thread thread = new thread (receive); Thread.    IsBackground = true;        Thread.        Start ();                        }///<summary>///Receive information sent from the server///</summary> void receive () {                while (true) {byte[] buffer = new BYTE[1024 * 1024 * 2];                int r = socketsend.receive (buffer);                if (r = = 0) {break;                } string msg = Encoding.UTF8.GetString (buffer, 0, R);                            ShowMsg (Socketsend.remoteendpoint + ":" + msg); }}////<summary>//customer-side Send information to server///</summary>//<param name= "Sende R "></param>//<param name=" E "></param> private void button2_click (object sender, even            Targs e) {string msg = This.txtMsg.Text.Trim ();            byte[] buffer = Encoding.UTF8.GetBytes (msg);        Socketsend.send (buffer);     } void ShowMsg (String msg) {       Txtlog.appendtext (msg + "\ r \ n"); }    }}

IOS Socket Notes