iOS/IPhone Programming Examples

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(IOS) POP3 using HTTP Proxy

Demonstrates how to communicate with a POP3 server through an HTTP proxy.

Chilkat iOS Objective-C Libraries

Chilkat iOS C/C++ Libraries

NSMutableString *strOutput = [NSMutableString stringWithCapacity:1000];

//  The mailman object is used for receiving (POP3)
//  and sending (SMTP) email.
CkoMailMan *mailman = [[[CkoMailMan alloc] init] autorelease];

//  Any string argument automatically begins the 30-day trial.
BOOL success;
success = [mailman UnlockComponent: @"30-day trial"];
if (success != YES) {
    [strOutput appendString: @"Component unlock failed"];
    [strOutput appendString: @"\n"];
    self.mainTextField.stringValue = strOutput;
    return;
}

//  To connect through an HTTP proxy, set the HttpProxyHostname
//  and HttpProxyPort properties to the hostname (or IP address)
//  and port of the HTTP proxy.  Typical port numbers used by
//  HTTP proxy servers are 3128 and 8080.
mailman.HttpProxyHostname = @"www.my-http-proxy.com";
mailman.HttpProxyPort = [NSNumber numberWithInt:3128];

//  Important:  Your HTTP proxy server must allow non-HTTP
//  traffic to pass.  Otherwise this does not work.

//  Set the POP3 server's hostname
mailman.MailHost = @"mail.chilkatsoft.com";

//  Set the POP3 login/password.
mailman.PopUsername = @"myLogin";
mailman.PopPassword = @"myPassword";

CkoEmailBundle *bundle;
//  Copy the all email from the user's POP3 mailbox
//  into a bundle object.  The email remains on the server.
// 
//  NOTE: All methods that communicate with a POP3 server
//  will automatically connect and authenticate (i.e. login)
//  if not already connected.  The connection will remain
//  open after the method call returns so that subsequent
//  calls do not need to re-establish the connection.
//  In this case, the connection is established via the HTTP
//  proxy.
bundle = [mailman CopyMail];

if (bundle == nil ) {
    [strOutput appendString: mailman.LastErrorText];
    [strOutput appendString: @"\n"];
    self.mainTextField.stringValue = strOutput;
    return;
}

int i;
CkoEmail *email;
for (i = 0; i <= [bundle.MessageCount intValue] - 1; i++) {
    email = [bundle GetEmail: [NSNumber numberWithInt: i]];
    [strOutput appendString: email.From];
    [strOutput appendString: @"\n"];
    [strOutput appendFormat: @"%s\n\n",[email.Subject UTF8String]];

}

[mailman Pop3EndSession];

self.mainTextField.stringValue = strOutput;



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