(Objective-C) IMAP using SOCKS5, SOCKS4 Proxy

Demonstrates how to connect to an IMAP server through a SOCKS5 or SOCKS4 proxy.

Note: This example requires Chilkat v11.0.0 or greater.

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#import <CkoImap.h>
#import <CkoMessageSet.h>
#import <CkoEmailBundle.h>
#import <CkoEmail.h>

BOOL success = NO;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

CkoImap *imap = [[CkoImap alloc] init];

// To use a SOCKS4 or SOCKS5 proxy, simply set the following
// properties prior to connecting with the IMAP server:
// The SOCKS hostname may be a domain name or 
// IP address:
imap.SocksHostname = @"www.mysocksproxyserver.com";
imap.SocksPort = [NSNumber numberWithInt:1080];
imap.SocksUsername = @"myProxyLogin";
imap.SocksPassword = @"myProxyPassword";
// Set the SOCKS version to 4 or 5 based on the version
// of the SOCKS proxy server:
imap.SocksVersion = [NSNumber numberWithInt:5];
// Note: SOCKS4 servers only support usernames without passwords.
// SOCKS5 servers support full login/password authentication.

// Connect to an IMAP server through the SOCKS proxy.
// Use TLS
imap.Ssl = YES;
imap.Port = [NSNumber numberWithInt:993];
success = [imap Connect: @"imap.someMailServer.com"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Login
success = [imap Login: @"myLogin" password: @"myPassword"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Select an IMAP mailbox
success = [imap SelectMailbox: @"Inbox"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Get the message IDs of all the emails in the mailbox
// We can choose to fetch UIDs or sequence numbers.
BOOL fetchUids = YES;
CkoMessageSet *messageSet = [[CkoMessageSet alloc] init];
success = [imap QueryMbx: @"ALL" bUid: fetchUids msgSet: messageSet];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Fetch the emails into a bundle object:
CkoEmailBundle *bundle = [[CkoEmailBundle alloc] init];
BOOL headersOnly = NO;
success = [imap FetchMsgSet: headersOnly msgSet: messageSet bundle: bundle];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

// Loop over the bundle and display the FROM and SUBJECT of each.
CkoEmail *email = [[CkoEmail alloc] init];
int i = 0;
int numEmails = [bundle.MessageCount intValue];
while (i < numEmails) {

    [bundle EmailAt: [NSNumber numberWithInt: i] email: email];

    NSLog(@"%@",email.From);
    NSLog(@"%@",email.Subject);
    NSLog(@"%@",@"--");
    i = i + 1;
}

// Disconnect from the IMAP server.
success = [imap Disconnect];