Objective-C

Send BinData Contents over a Socket

Demonstrates Socket.SendBd, which sends bytes from a BinData beginning at an offset. A numBytes of 0 sends from the offset through the end of the data.

Background. The BinData receive methods accumulate raw bytes in a BinData object. A single receive returns only what is currently available, whereas the counted receive waits for an exact number of bytes.

Chilkat Objective-C Downloads

Download Chilkat for Objective-C

Objective-C

#import <CkoSocket.h>
#import <CkoBinData.h>

BOOL success = NO;

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

//  Connect to the server using TLS.
BOOL bTls = YES;
int maxWaitMs = 5000;
success = [socket Connect: @"example.com" port: [NSNumber numberWithInt: 5000] ssl: bTls maxWaitMs: [NSNumber numberWithInt: maxWaitMs]];
if (success == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

//  Place some bytes into a BinData to be sent.
CkoBinData *bd = [[CkoBinData alloc] init];
[bd AppendString: @"message payload" charset: @"utf-8"];

//  Send bytes from the BinData starting at the given offset.  A numBytes of 0 sends from the offset
//  through the end of the data.
success = [socket SendBd: bd offset: 0 numBytes: 0];
if (success == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

NSLog(@"%@%d%@",@"Sent ",[bd.NumBytes intValue],@" bytes.");