(Objective-C) Socket/SSL/TLS through SOCKS5 / SOCKS4 Proxy

Demonstrates how to use the Chilkat Socket/SSL/TLS component/library with a SOCKS5 or SOCKS4 proxy server.

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#import <CkoSocket.h>
#import <NSString.h>

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

CkoSocket *socket = [[CkoSocket alloc] init];

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

// Connect to port 5555 of 192.168.1.108.
// hostname may be a domain name or IP address.
NSString *hostname = @"192.168.1.108";
BOOL ssl = NO;
int maxWaitMillisec = 20000;
BOOL success = [socket Connect: hostname port: [NSNumber numberWithInt: 5555] ssl: ssl maxWaitMs: [NSNumber numberWithInt: maxWaitMillisec]];
if (success != YES) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

// Set maximum timeouts for reading an writing (in millisec)
socket.MaxReadIdleMs = [NSNumber numberWithInt:10000];
socket.MaxSendIdleMs = [NSNumber numberWithInt:10000];

// The server (in this example) is going to send a "Hello World!" 
// message.  Read it:
NSString *receivedMsg = [socket ReceiveString];
if (socket.LastMethodSuccess != YES) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

// Close the connection with the server
// Wait a max of 20 seconds (20000 millsec)
success = [socket Close: [NSNumber numberWithInt: 20000]];

NSLog(@"%@",receivedMsg);