HDC调试需求开发（15万预算）,能者速来！>>>
将J2Cache或jgroups的测试程序部署到阿里云（windows系统两台，内网IP能ping通）、浪潮云（三台linux，内网IP连着），微软云虚拟机（三台linux，内网IP连着），发现都无法连通，具体表现在不同机器跑的同一程序不能加入到同一个 JChannel 中， viewAccepted不触发。 同样的程序在公司局域网、一所学校的内网服务器都没问题。
测试代码很简单 import java.io.BufferedReader; import java.io.InputStreamReader; import org.jgroups.JChannel; import org.jgroups.Message; import org.jgroups.ReceiverAdapter; import org.jgroups.View; public class SimpleChat extends ReceiverAdapter { JChannel channel; public void viewAccepted(View new_view) { System.out.println("** view: " + new_view); } public void receive(Message msg) { String line = "[" + msg.getSrc() + "]: " + msg.getObject(); System.out.println(line); } /** Method called from other app, injecting channel */ public void start(JChannel ch) throws Exception { channel = ch; channel.setReceiver(this); channel.connect("ChatCluster"); eventLoop(); channel.close(); } private void start(String props, String name) throws Exception { channel = new JChannel(props); if (name != null) { channel.name(name); } channel.setReceiver(this); channel.connect("ChatCluster"); eventLoop(); channel.close(); } private void eventLoop() { BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); while (true) { try { System.out.print("> "); System.out.flush(); String line = in.readLine().toLowerCase(); if (line.startsWith("quit") || line.startsWith("exit")) { break; } Message msg = new Message(null, null, line); channel.send(msg); } catch (Exception e) { } } } public static void main(String[] args) throws Exception { String props = "udp.xml"; String name = null; for (int i = 0; i < args.length; i++) { if (args[i].equals("-props")) { props = args[++i]; continue; } if (args[i].equals("-name")) { name = args[++i]; continue; } help(); return; } new SimpleChat().start(props, name); } protected static void help() { System.out.println("SimpleChat [-props XML config] [-name name]"); } }


配置文件udp.xml： <config xmlns="urn:org:jgroups" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:org:jgroups http://www.jgroups.org/schema/JGroups-3.4.xsd"> <UDP mcast_addr="${jgroups.udp.mcast_addr:235.6.6.6}" mcast_port="${jgroups.udp.mcast_port:45588}" tos="8" ucast_recv_buf_size="5M" ucast_send_buf_size="1M" mcast_recv_buf_size="5M" mcast_send_buf_size="1M" loopback="true" max_bundle_size="64K" max_bundle_timeout="30" ip_ttl="${jgroups.udp.ip_ttl:2}" enable_diagnostics="true" thread_naming_pattern="cl" timer_type="new" timer.min_threads="4" timer.max_threads="10" timer.keep_alive_time="3000" timer.queue_max_size="500" thread_pool.enabled="true" thread_pool.min_threads="2" thread_pool.max_threads="8" thread_pool.keep_alive_time="5000" thread_pool.queue_enabled="true" thread_pool.queue_max_size="10000" thread_pool.rejection_policy="discard" oob_thread_pool.enabled="true" oob_thread_pool.min_threads="1" oob_thread_pool.max_threads="8" oob_thread_pool.keep_alive_time="5000" oob_thread_pool.queue_enabled="false" oob_thread_pool.queue_max_size="100" oob_thread_pool.rejection_policy="Run"/> <PING timeout="2000" num_initial_members="3"/> <MERGE2 max_interval="30000" min_interval="10000"/> <FD_SOCK/> <FD_ALL/> <VERIFY_SUSPECT timeout="1500" /> <BARRIER /> <pbcast.NAKACK use_mcast_xmit="true" retransmit_timeout="300,600,1200" discard_delivered_msgs="true"/> <pbcast.STABLE stability_delay="1000" desired_avg_gossip="50000" max_bytes="4M"/> <pbcast.GMS print_local_addr="true" print_physical_addrs="true" join_timeout="3000" view_bundling="true" max_join_attempts="3"/> <UFC max_credits="2M" min_threshold="0.4"/> <MFC max_credits="2M" min_threshold="0.4"/> <FRAG2 frag_size="60K" /> <pbcast.STATE_TRANSFER /> </config>
使用的是组播UDP， 运行java也加上 -Djava.net.preferIPv4Stack=true 参数
请教各位，在这些云服务器上部署jgroups的分布式程序，能使用UDP组播方式吗？ 需要服务商做什么配置或购买的机器有什么要求，才能使用？
如果不能使用，应该如何修改配置文件，把这个SimpleChat连通？
@红薯