Objective-C

TCP/IP Socket Connect to Remote Host:Port

See more Socket/SSL/TLS Examples

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

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

BOOL success = NO;

//  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;
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:
//  <a href="http://www.cknotes.com/?p=302">http://www.cknotes.com/?p=302</a>
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);