我稍微修改了 ZeroMQ 指南中的 helloworld 服务器程序 ( hwserver.pl ),以使用 AnyEvent 实现它。然而,在 REQ/REP 的两次迭代之后,程序挂起。有人能弄清楚为什么吗?
这是服务器:
#!/usr/bin/perl -w
use strict;
use warnings;
use 5.12.0;
use EV;
use AnyEvent;
use ZMQ::LibZMQ3;
use ZMQ::Constants qw/ ZMQ_REP ZMQ_FD /;
my $context = zmq_init();
my $responder = zmq_socket($context, ZMQ_REP);
my $fh = zmq_getsockopt( $responder, ZMQ_FD );
zmq_bind($responder, 'tcp://*:5555');
our $w; $w = AE::io $fh, 0, sub {
say "Receiving...";
zmq_recv($responder, my $buf, 1_000_000);
say "Received request: [$buf]";
sleep(1);
zmq_msg_send('World', $responder);
sleep(1);
};
EV::run;
这是客户:
#!/usr/bin/perl -w
use strict;
use warnings;
use 5.12.0;
use ZMQ::LibZMQ3;
use ZMQ::Constants qw(ZMQ_REQ);
my $context = zmq_init();
# Socket to talk to server
say 'Connecting to hello world server...';
my $requester = zmq_socket($context, ZMQ_REQ);
zmq_connect($requester, 'tcp://localhost:5555');
for my $request_nbr (0..9) {
say "Sending request $request_nbr...";
zmq_msg_send('Hello', $requester);
my $msg = zmq_msg_init();
say "Receiving...";
zmq_msg_recv($msg, $requester);
say "Received reply $request_nbr: [". zmq_msg_data($msg) ."]";
}
这是服务器的输出:
Receiving...
Received request: [Hello]
Receiving...
Received request: [Hello]
这是客户端的输出:
Connecting to hello world server...
Sending request 0...
Receiving...
Received reply 0: [World]
Sending request 1...
Receiving...
Received reply 1: [World]
Sending request 2...
Receiving...
怎么了?