iOS Development--Network programming OC & (ii) XMPP implementation user Login and logoff

XMPP implements user logon and logoff

Login:

Steps:
* Login is implemented in Appdelegate

• 1. Initialize Xmppstream
• 2. Connect to the server [pass a Jid]
• 3. After the connection to the service is successful, then send the password authorization
• 4. After successful authorization, send "online" message

One: Import the framework, according to the previous article to import the corresponding library and file

Two: Define a member variable for XMPP

1 @interface appdelegate () <XMPPStreamDelegate>{ 2 Xmppstream *_ Xmppstream; 3 }

Three: Follow the steps in the proxy method to declare four methods that need to be implemented

1 //1. Initialize Xmppstream2-(void) Setupxmppstream;3 4 5 //2. Connect to the server6-(void) Connecttohost;7 8 //3. After the connection to the service is successful, then send the password authorization9-(void) Sendpwdtohost;Ten  One  A //4. After successful authorization, send "online" message --(void) Sendonlinetohost;

Four: The method of invoking the linked server host when the program starts

1 -(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchoptions {2     3     //  When the program starts, connect to host 4    [self Connecttohost]; 5     return YES; 6 }

The implementation of the linked server host method, in the linked server host method, initializes the Xmppstream if the link succeeds

1 #pragmaMark connects to the server2-(void) connecttohost{3NSLog (@"start connecting to the server");4     if(!_xmppstream) {5 [self setupxmppstream];6     }7     8     9     //Set the login user JidTen     //Resource Identity User Login client iphone android One      AXmppjid *myjid = [Xmppjid jidwithuser:@"Wangwu"Domain@"teacher.local"Resource@"iphone" ]; -_xmppstream.myjid =Myjid; -  the     //set the server domain name -_xmppstream.hostname =@"teacher.local";//not only can it be a domain name, but also an IP address -      -     //set the port if the server port is 5222, you can omit the +_xmppstream.hostport =5222; -      +     //Connection ANserror *err =Nil; at     if(! [_xmppstream Connectwithtimeout:xmppstreamtimeoutnone error:&Err]) { -NSLog (@"%@", err); -     } -      -}

Agent method for connecting to host

1 #pragmaMark-xmppstream's agent2 #pragmaMark successfully connected to host3-(void) Xmppstreamdidconnect: (Xmppstream *) sender{4NSLog (@"successful connection to host");5     6     //after the host connection is successful, send a password to authorize7 [self sendpwdtohost];8 }9 #pragmaMark is disconnected from the hostTen-(void) Xmppstreamdiddisconnect: (Xmppstream *) sender Witherror: (Nserror *) error{ One     //If there is an error, the connection fails ANSLog (@"disconnecting from the host%@", error); -          -}

Implementation of initialization Xmppstream method

1 #pragma Mark  -Private Method 2#pragma Mark initialize Xmppstream3 -(void) setupxmppstream{4     5     _xmppstream = [[Xmppstream alloc] init]; 6     7     // Set up proxy 8     0 )]; 9 }

Five: Send password authorization

1 #pragmaMark connects to a successful service and then sends a password authorization2-(void) sendpwdtohost{3NSLog (@"re-send password authorization");4Nserror *err =Nil;5[_xmppstream Authenticatewithpassword:@"123456"error:&err];6     if(err) {7NSLog (@"%@", err);8     }9}

Six: After authorization succeeds, send status message

1 #pragmaAfter Mark's authorization is successful, send an "online" message2-(void) sendonlinetohost{3     4NSLog (@"Send online message");5Xmpppresence *presence =[xmpppresence presence];6NSLog (@"%@", presence);7     8 [_xmppstream sendelement:presence];9     Ten      One}

Seven: Proxy method for authorization success and failure

1 #pragmaMark Authorized Success2-(void) Xmppstreamdidauthenticate: (Xmppstream *) sender{3NSLog (@"Authorized Success");4     5 [self sendonlinetohost];6 }7 8 9 #pragmaMark's authorization failed.Ten-(void) Xmppstream: (Xmppstream *) sender Didnotauthenticate: (Ddxmlelement *) error{ OneNSLog (@"Authorization Failure%@", error); A}

Cancellation

One: A method of defining and implementing a logoff in an agent

1 // logoff 2 -(void) logout;

1 #pragmaMark-Public method2-(void) logout{3     //1. "Send" Offline "message"4Xmpppresence *offline = [xmpppresence presencewithtype:@"unavailable"];5 [_xmppstream sendelement:offline];6     7     //2. Disconnecting from the server8 [_xmppstream disconnect];9}

Two: Realize logout--here we only realize the click on the screen to logout and launch

1 -(void) Touchesbegan: (Nsset *) touches withevent: (uievent *)event{2     //  do logout 3     Appdelegate *app = [UIApplication sharedapplication]. Delegate ; 4     [app logout]; 5     6 }

iOS Development--Network programming OC & (ii) XMPP implementation user Login and logoff