Objective-C

Receive Bytes into a BinData

Demonstrates Socket.ReceiveBd, which receives one delivery of binary data and appends it to a BinData. It returns whatever is immediately available.

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.

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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;
}

//  Receive one delivery of binary data and append it to a BinData.  ReceiveBd returns whatever is
//  immediately available; it does not loop to drain everything that may follow.
CkoBinData *bd = [[CkoBinData alloc] init];
success = [socket ReceiveBd: bd];
if (success == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

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