HTTP POST request - sending username and password to the server

I'm a newcomer to the iPhone world. I'm working on an application having a login pa开发者_C百科ge. I have to send UIText value of username and password to the server. Code would be appreciated.

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Look into using the ASIHTTPRequest framework to make POST requests.

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You can check the user_ name and password from the severer ASIHTTPRequest framework it's the ex. of code which from the twitter request.m file

if ([challenge previousFailureCount] == 0) {
    NSURLCredential *newCredential;
    newCredential=[NSURLCredential credentialWithUser:[self username]
                                             password:[self password]
                                          persistence:NSURLCredentialPersistenceNone];
    [[challenge sender] useCredential:newCredential
           forAuthenticationChallenge:challenge];
    [newCredential release];
} else {
    [[challenge sender] cancelAuthenticationChallenge:challenge];
    // inform the user that the user name and password
    // in the preferences are incorrect
    NSLog(@"Invalid Username or Password");
}