IOS instances implement Socket-Based TCP/IP communication

IOSInstance implementation based onSocket TCP/IPCommunication is the content to be introduced in this article.HttpNetwork transmission layer communication, now the project needs to implementTCP/IPThrough the network, someone has already written a public class library AsyncSocket. The following describes how to use AsyncSocket. Refer to the official document of AsyncSocket.

The usage is as follows:

1. Create a project.

2. Add AsyncSocket to the project.

3. Add CFNetwork. framework to the project.

4. Implementation test:

 
 

  
  
#import <UIKit/UIKit.h>   
  
  
#import "AsyncSocket.h"   
  
  
@interface iphone_socketViewController : UIViewController {   
  
  
 
  
  
    AsyncSocket *asyncSocket;   
  
  
}   
  
  
 
  
  
@end 
 
 

Corresponding Method implementation:

 
 

  
  
# Import "iphone_socketViewController.h"
  
  
@ Implementation iphone_socketViewController
  
  
-(Void) viewDidLoad {
  
  
[Super viewDidLoad];
  
  
AsyncSocket = [[AsyncSocket alloc] initWithDelegate: self];
  
  
NSError * err = nil;
  
  
If (! [AsyncSocket connectToHost: @ "192.168.0.113" onPort: 25001 error: & err])
  
  
{
  
  
NSLog (@ "Error: % @", err );
  
  
}
  
  
}
  
  
-(Void) onSocket :( AsyncSocket *) sock didConnectToHost :( NSString *) host port :( UInt16) port
  
  
{
  
  
NSLog (@ "onSocket: % p didConnectToHost: % @ port: % hu", sock, host, port );
  
  
[Sock readDataWithTimeout: 1 tag: 0];
  
  
}
  
  
-(Void) onSocket :( AsyncSocket *) sock didReadData :( NSData *) data withTag :( long) tag
  
  
{
  
  
NSString * aStr = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
  
  
NSLog (@ "==%@", aStr );
  
  
[AStr release];
  
  
NSData * aData = [@ "<xml> I Like You <xml>" dataUsingEncoding: NSUTF8StringEncoding];
  
  
[Sock writeData: aData withTimeout:-1 tag: 1];
  
  
[Sock readDataWithTimeout: 1 tag: 0];
  
  
}
  
  
-(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 );
  
  
}
  
  
-(Void) onSocketDidDisconnect :( AsyncSocket *) sock
  
  
{
  
  
// Disconnected
  
  
NSLog (@ "onSocketDidDisconnect: % p", sock );
  
  
}
  
  
-(Void) didReceiveMemoryWarning {
  
  
[Super didReceiveMemoryWarning];
  
  
}
  
  
-(Void) viewDidUnload {
  
  
AsyncSocket = nil;
  
  
}
  
  
-(Void) dealloc {
  
  
[AsyncSocket release];
  
  
[Super dealloc];
  
  
}
  
  
@ End
 
 

Here we only implement a simple client. The server implementation is written by pathy. In the source code.

Compile the running result:

Server:

 
 

  
  
bogon:iosworkspace vsp$ ./Servers.py  
 
 

The client's IP address is: ('192. 168.0.169 ', 192)

<Xml> I Like You <xml>

Subsequent data

Client:

 
 

  
  
19:14:47. 723 iphone. socket [3186: 307] WB: Notice: WinterBoard
  
  
19:14:48. 892 iphone. socket [3186: 307] onSocket: 0x16bd00 didConnectToHost: 192.168.0.113 port: 25001
  
  
19:14:48. 897 iphone. socket [3186: 307] === I am a server data
  
  
19:14:48. 911 iphone. socket [3186: 307] === I don't like you
  
  
19:14:48. 918 iphone. socket [3186: 307] onSocket: 0x16bd00 willDisconnectWithError :( null)
  
  
19:14:48. 928 iphone. socket [3186: 307] onSocketDidDisconnect: 0x16bd00
 
 

Source code: http://easymorse-iphone.googlecode.com/svn/trunk/iphone.socket/

Summary:IOSInstance implementation based onSocket TCP/IPI hope this article will help you with the introduction of the communication content.