服务端, 客户端运行几个小时后会停止工作. 需要重启 客户端.

[sunuslee]

hi, @xtaci 首先我用这个项目用得很爽, 感谢, 赞一个!
最近一段时间, 我注意到有一个问题, 不知道如何改善, 表现就是运行一段时间后, 客户端, 服务端均停止工作. 以下是日志, 这次我留了个现场:)

server 的日期 +8小时和 client 一一对应.

server, ver 20170221

/root/kcp/server_linux_amd64 -t server.ip:8989 -l :4000 -mode fast2 -sndwnd 1536 --log /var/log/kcp.log
2017/03/22 05:27:27 stream opened
2017/03/22 05:27:27 stream opened
2017/03/22 05:30:37 stream closed
2017/03/22 05:30:37 stream opened
2017/03/22 05:31:39 stream closed
2017/03/22 05:31:52 stream closed
2017/03/22 05:32:20 stream opened
2017/03/22 05:34:38 stream closed
2017/03/22 05:36:20 stream closed
2017/03/22 05:36:22 stream opened
2017/03/22 05:36:50 stream opened
2017/03/22 05:40:23 stream closed
2017/03/22 05:40:51 stream closed
2017/03/22 05:47:01 stream opened
2017/03/22 05:48:48 stream opened
2017/03/22 05:51:02 stream closed
2017/03/22 05:52:40 stream opened
2017/03/22 05:52:48 stream closed
2017/03/22 05:55:54 stream opened
2017/03/22 05:55:55 stream opened
2017/03/22 05:55:56 stream opened
2017/03/22 05:56:03 stream opened
2017/03/22 05:56:11 stream closed
2017/03/22 05:56:11 stream opened
2017/03/22 05:56:40 stream closed
2017/03/22 06:00:04 stream closed
2017/03/22 06:00:12 stream closed
2017/03/22 06:00:19 stream closed
2017/03/22 06:01:09 stream closed
2017/03/22 06:01:57 broken pipe

client , ver 20170221

./client_darwin_amd64 -r "server.ip:4000" -l ":8989" -mode fast2 -rcvwnd 1536
2017/03/22 14:01:15 stream opened
2017/03/22 14:01:15 stream opened
2017/03/22 14:01:15 stream opened
2017/03/22 14:01:15 stream opened
2017/03/22 14:01:16 stream opened
2017/03/22 14:01:25 stream closed
2017/03/22 14:01:25 stream opened
2017/03/22 14:01:25 stream closed
2017/03/22 14:01:25 stream closed
2017/03/22 14:01:25 stream closed
2017/03/22 14:01:25 stream opened
2017/03/22 14:01:25 stream opened
2017/03/22 14:01:26 stream closed
2017/03/22 14:01:26 stream opened
2017/03/22 14:01:29 stream closed
2017/03/22 14:01:29 stream closed
2017/03/22 14:01:29 stream closed
2017/03/22 14:01:29 stream closed
2017/03/22 14:02:22 session marked as expired
2017/03/22 14:02:22 connection: client.ip:63642 -> server.ip:4000
2017/03/22 14:02:22 stream opened
2017/03/22 14:02:23 session normally closed
2017/03/22 14:02:32 stream closed
2017/03/22 14:02:32 stream opened
2017/03/22 14:02:42 stream closed
2017/03/22 14:02:42 stream opened
2017/03/22 14:02:52 stream closed
2017/03/22 14:02:52 session marked as expired
2017/03/22 14:02:52 connection: client.ip:51745 -> server.ip:4000
2017/03/22 14:02:52 stream opened
2017/03/22 14:02:53 session normally closed
2017/03/22 14:03:02 stream closed
2017/03/22 14:03:08 stream opened
2017/03/22 14:03:10 stream opened
2017/03/22 14:03:10 stream opened
2017/03/22 14:03:10 stream opened

PS, 实际运行时间有几个小时, 日志只是取的是最后几十条. 并且该问题出现后 , 客户端, 服务端均不再输出新的日志.
目前怀疑的点如下:

server

2017/03/22 06:01:57 broken pipe

client

2017/03/22 14:01:29 stream closed
2017/03/22 14:02:22 session marked as expired
2017/03/22 14:02:22 connection: client.ip:63642 -> server.ip:4000
2017/03/22 14:02:22 stream opened
2017/03/22 14:02:23 session normally closed
2017/03/22 14:02:32 stream closed
2017/03/22 14:02:32 stream opened
2017/03/22 14:02:42 stream closed
2017/03/22 14:02:42 stream opened
2017/03/22 14:02:52 stream closed
2017/03/22 14:02:52 session marked as expired
2017/03/22 14:02:52 connection: client.ip:51745 -> server.ip:4000
2017/03/22 14:02:52 stream opened
2017/03/22 14:02:53 session normally closed
2017/03/22 14:03:02 stream closed
2017/03/22 14:03:08 stream opened
2017/03/22 14:03:10 stream opened
2017/03/22 14:03:10 stream opened
2017/03/22 14:03:10 stream opened

不知是我遗漏了什么, 还是有什么办法可以修复该问题, 多谢!
UPDATE: 我这次又确认了一下, 重启客户端即可恢复.

[xtaci]

可以试试最新的看有没有解决，可能是ISP的问题，也可能是某个bug导致的。

[sunuslee]

@xtaci OK
我现在已经在使用0322版本. 先观察. 不出意外今明两天可以反馈结果.

[keeno1982]

我也遇到这个问题，频繁出现session marked as expired,session normally closed，用的是20170322版本

[xtaci]

session marked as expired
session normally closed
session reached scavenge ttl

都是由于-autoexpire设置产生的正常连接切换中断。

[sunuslee]

@xtaci 但是你可以看看我的启动参数. 应该没设置-autoexpire
那么应该是使用默认的 -autoexpire 0 吧?

[xtaci]

没有设置就是真的连接中断了。

[keeno1982]

-l xxx.xxx.xxx.xxx:9527 -r xxx.xxx.xxx.xxx:555 -key "xxxxxx" -crypt salsa20 -nocomp true -mtu 1350 -sndwnd 245 -rcvwnd 614 -mode fast3，我就是这几个参数，也没有用到-autoexpire

[Originalimoc]

还有个可能。
检查一下iptables是否有影响建立链接的选项。