I can write binary to a socket that successfully gets processed by the server. When the server replies, again in binary, my client hangs. I tried using echo to debugg but again the same issue (works fine with ASCII). Below is part of the code: 
 
#!/opt/perl5/bin/perl

use strict;
use Socket;

my $messageCounter = 0;
my $message;
my $reply;
my $length;
my $protocol = getprotobyname('tcp');
my $socketCreated;
my $remoteHost = "XXXXXX";
my $packed_ip;
my $remotePort = XXXX;
my $portAddress;
#BINARY OUTPUT FILE DEBUGGING ONLY
my $binfilename = "BINARY_OUTPUT_FILE";
my $open_binName = sprintf(">%s", $binfilename);

open(BIN_FILE, $open_binName) || die "can't open BIN_FILE: $!";
        
#Open Socket
$socketCreated =socket(SocketHandle,PF_INET,SOCK_STREAM ,$protocol);
        
$packed_ip = inet_aton($remoteHost);
$portAddress = sockaddr_in($remotePort, $packed_ip);
        
#Open Connection
connect(SocketHandle, $portAddress) || die print "Could not Establish 
+a Connection\n";
print "Connection Successfully Established\n";
        
#enable buffering 
select((select(SocketHandle), $| = 1)[0]);
    
$messageCounter++;
$message = DCPLogin($messageCounter); # returns the binary string
print SocketHandle $message;

#hangs here

while($length=sysread(SocketHandle, $reply, 1024)){ 
    print BIN_FILE $reply;
}#end while

        
close(BIN_FILE) || die "couldn't close BIN_FILE: $!";        #debuggin
+g only    
closeConn();    #function that closes the connection

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In reply to reading binary from a socket by philiotis

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