Perl生产者连接到ActiveMQ服务器时出错

Question

我正在尝试Perl生产商与ActiveMq进行交谈。 请找到我尝试过的代码。 它给我一个错误“ * Net :: STOMP :: Client :: IO :: receive_data（）：无法sysread（）：EOF” **

调试后，错误在$stomp->connect(); 请让我知道为什么现在出现此错误...我在网上找不到很多帮助。

提前致谢

我试图通过telnet到我试图建立连接的URL。 首先它已连接，最后是一些错误消息，如下所示：

CacheEnabledSizePrefixDisabled MaxInactivityDurationInitalDelay'TcpNoDelayEnabledMaxInactivityDurationu0TightEncodingEnabledStackTraceEnabledPuTTY
Connection closed by foreign host.

这意味着连接正在关闭。

这些是我怀疑存在错误的代理日志：

2012-12-07 14:44:12,021 | WARN  | Transport Connection to: tcp://127.0.0.1:57404 failed: java.io.EOFException | org.apache.activemq.broker.TransportConnection.Transport | ActiveMQ Transport: tcp:///127.0.0.1:57404@61616
2012-12-07 14:44:12,021 | WARN  | Transport Connection to: tcp://127.0.0.1:57403 failed: java.io.EOFException | org.apache.activemq.broker.TransportConnection.Transport | ActiveMQ Transport: tcp:///127.0.0.1:57403@61616
2012-12-07 14:44:12,024 | WARN  | Transport Connection to: tcp://127.0.0.1:57405 failed: java.io.IOException: Unknown data type: 47 | org.apache.activemq.broker.TransportConnection.Transport | ActiveMQ Transport: tcp:///127.0.0.1:57405@61616
2012-12-07 14:44:12,024 | WARN  | Transport Connection to: tcp://127.0.0.1:57405 failed: org.apache.activemq.transport.InactivityIOException: Cannot send, channel has already failed: tcp://127.0.0.1:57405 | org.apache.activemq.broker.TransportConnection.Transport | Async Exception Handler
2012-12-07 16:08:55,045 | WARN  | Transport Connection to: tcp://127.0.0.1:58008 failed: java.io.IOException: Unknown data type: 69 | org.apache.activemq.broker.TransportConnection.Transport | ActiveMQ Transport: tcp:///127.0.0.1:58008@61616
2012-12-07 16:08:55,045 | WARN  | Transport Connection to: tcp://127.0.0.1:58008 failed: org.apache.activemq.transport.InactivityIOException: Cannot send, channel has already failed: tcp://127.0.0.1:58008 | org.apache.activemq.broker.TransportConnection.Transport | Async Exception Handler

码：

#! /usr/bin/perl

use strict;
use warnings;

use Net::STOMP::Client;
my $stomp = Net::STOMP::Client->new(uri => "tcp://$url:$port");
my $peer = $stomp->peer();
  printf("connected to broker %s (IP %s), port %d\n",
      $peer->host(), $peer->addr(), $peer->port());
  $stomp->connect();
  printf("speaking STOMP %s with server %s\n",
      $stomp->version(), $stomp->server() || "UNKNOWN");
  printf("session %s started\n", $stomp->session());
  $stomp->disconnect();
  printf("session ended\n");

Answer 1

如果您告诉我们错误发生在哪一行上会很有帮助，因为那会指出哪个呼叫失败并出现该错误。

Perl的STOMP库有一些非常糟糕的版本。 确保您使用的是CPAN的最新版本，而不是系统上预先安装的旧版本。