Receive a Bounded String from a Socket

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveStringMaxN, which receives and decodes text like ReceiveString but reads at most a given number of input bytes.

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

BOOL success = NO;

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

//  Connect to the server using TLS.  The 3rd argument enables the TLS handshake after the TCP
//  connection succeeds; the 4th is the maximum time to wait, in milliseconds.
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;
}

//  StringCharset controls the character encoding used when sending and receiving text.
socket.StringCharset = @"utf-8";
//  Send a request using a simple application-defined text protocol in which each message ends with a
//  CRLF.
NSString *command = @"STATUS\r\n";
success = [socket SendString: command];
if (success == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

//  Receive and decode text like ReceiveString, but read at most the given number of input bytes.
//  The limit is measured in bytes, not Unicode characters.
NSString *firstChunk = [socket ReceiveStringMaxN: [NSNumber numberWithInt: 64]];
if (socket.LastMethodSuccess == NO) {
    NSLog(@"%@",socket.LastErrorText);
    return;
}

NSLog(@"%@",firstChunk);