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Perl

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.

Background. The limit is measured in bytes, not Unicode characters, so a byte limit can split a multibyte character or a protocol token. Decoding uses StringCharset.

Chilkat Perl Downloads

Chilkat2 Perl
use strict;
use warnings;
use Chilkat2;

my $socket = Chilkat2::Socket->new;

# 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.
my $bTls = 1;
my $maxWaitMs = 5000;
my $success = $socket->Connect('example.com', 5000, $bTls, $maxWaitMs);
if (!$success) {
    print $socket->LastErrorText, "\n";
    exit;
}

# 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.
my $command = "STATUS\r\n";
$success = $socket->SendString($command);
if (!$success) {
    print $socket->LastErrorText, "\n";
    exit;
}

# 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.
my $firstChunk = $socket->ReceiveStringMaxN(64);
if (!$socket->LastMethodSuccess) {
    print $socket->LastErrorText, "\n";
    exit;
}

print $firstChunk, "\n";