(Objective-C) TCP/IP Socket Connect to Remote Host:Port

Demonstrates how to create a TCP/IP socket, connect to a remote host:port, and receive a "Hello World!" message.

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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];

// Connect to port 5555 of localhost.
// The string "localhost" is for testing on a single computer.
// It would typically be replaced with an IP hostname, such
// as "www.chilkatsoft.com".
BOOL ssl = NO;
int maxWaitMillisec = 20000;
BOOL success = [socket Connect: @"localhost" 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];

// Pretend, for the sake of the example, that the
// ficticious server is going to send a "Hello World!" 
// after accepting the connection.  
// Note: Technically, the ReceiveString may not receive the
// complete string, although it's highly probable given the short
// length of the "Hello World!" message. 
// See this Chilkat blog post for more information:
// http://www.cknotes.com/?p=302
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);