离线回放流量失败

[sunmuchao]

./tcpcopy -l /opt/smc/tcpcopy/tcpcopy.log -x 12701-192.168.5.94:12701 -s 192.168.5.22 -c 192.168.2.254 -i /opt/smc/test2.pcap
执行以下回放命令。
测试机器是192.168.5.94:12701 拦截器的机器是192.168.5.22
通过tcpdump抓取12701的数据包后，执行了几个请求之后间隔120多s tcpcopy发送RST数据包断开连接。数据包中包含grpc请求，不清楚是不是tcpcopy无法解析部分grpc请求的原因？

日志内容如下：
2023/01/04 21:07:16 +118 [notice] set global port for tcpcopy
2023/01/04 21:07:16 +118 [notice] raw_clt_tf_ip:192.168.2.254
2023/01/04 21:07:16 +118 [notice] parallel connections per target:2
2023/01/04 21:07:16 +118 [notice] accelerated 1 times,interval:0 ms
2023/01/04 21:07:16 +118 [notice] s parameter:192.168.5.22
2023/01/04 21:07:16 +118 [notice] set only ip for tcpcopy
2023/01/04 21:07:16 +118 [info] connect to remote server(192.168.5.22:36524)
2023/01/04 21:07:16 +118 [info] connect to remote server(192.168.5.22:36524)
2023/01/04 21:07:16 +118 [notice] open pcap success:/opt/smc/test2.pcap
2023/01/04 21:07:16 +118 [notice] send the first packets here
2023/01/04 21:07:46 +118 [notice] active:3,rel:0,obs del:0,tw:0
2023/01/04 21:07:46 +118 [notice] conns:3,resp:31,c-resp:16
2023/01/04 21:07:46 +118 [notice] resp fin:0,resp rst:0
2023/01/04 21:07:46 +118 [notice] send:23,send content:11
2023/01/04 21:07:46 +118 [notice] send syn:3, fin:0,reset:0
2023/01/04 21:07:46 +118 [notice] reconnect:0,for no syn:0
2023/01/04 21:07:46 +118 [notice] retransmit:0
2023/01/04 21:07:46 +118 [notice] recv packs after retransmission:0
2023/01/04 21:07:46 +118 [notice] syn cnt:3,all clt:109,clt cont:103
2023/01/04 21:07:46 +118 [notice] total cont retransmit:0, frag:0
2023/01/04 21:07:46 +118 [notice] total captured packets:198
2023/01/04 21:07:50 +180 [notice] stop, null from pcap_next
2023/01/04 21:08:16 +118 [notice] user time used:0
2023/01/04 21:08:16 +118 [notice] sys time used:0
2023/01/04 21:08:16 +118 [notice] max memory size:6616
2023/01/04 21:08:16 +118 [notice] Total allocated space (bytes): 109408
2023/01/04 21:08:16 +118 [notice] Total free space (bytes): 25760
2023/01/04 21:08:16 +118 [notice] Top-most, releasable space (bytes): 25520
2023/01/04 21:08:16 +118 [notice] active:3,rel:0,obs del:0,tw:0
2023/01/04 21:08:16 +118 [notice] conns:3,resp:31,c-resp:16
2023/01/04 21:08:16 +118 [notice] resp fin:0,resp rst:0
2023/01/04 21:08:16 +118 [notice] send:23,send content:11
2023/01/04 21:08:16 +118 [notice] send syn:3, fin:0,reset:0
2023/01/04 21:08:16 +118 [notice] reconnect:0,for no syn:0
2023/01/04 21:08:16 +118 [notice] retransmit:0
2023/01/04 21:08:16 +118 [notice] recv packs after retransmission:0
2023/01/04 21:08:16 +118 [notice] syn cnt:3,all clt:120,clt cont:114
2023/01/04 21:08:16 +118 [notice] total cont retransmit:0, frag:0
2023/01/04 21:08:16 +118 [notice] total captured packets:222
2023/01/04 21:08:46 +118 [notice] active:3,rel:0,obs del:0,tw:0
2023/01/04 21:08:46 +118 [notice] conns:3,resp:31,c-resp:16
2023/01/04 21:08:46 +118 [notice] resp fin:0,resp rst:0
2023/01/04 21:08:46 +118 [notice] send:23,send content:11
2023/01/04 21:08:46 +118 [notice] send syn:3, fin:0,reset:0
2023/01/04 21:08:46 +118 [notice] reconnect:0,for no syn:0
2023/01/04 21:08:46 +118 [notice] retransmit:0
2023/01/04 21:08:46 +118 [notice] recv packs after retransmission:0
2023/01/04 21:08:46 +118 [notice] syn cnt:3,all clt:120,clt cont:114
2023/01/04 21:08:46 +118 [notice] total cont retransmit:0, frag:0
2023/01/04 21:08:46 +118 [notice] total captured packets:222
2023/01/04 21:09:16 +118 [notice] user time used:0
2023/01/04 21:09:16 +118 [notice] sys time used:0
2023/01/04 21:09:16 +118 [notice] max memory size:6616
2023/01/04 21:09:16 +118 [notice] Total allocated space (bytes): 109408
2023/01/04 21:09:16 +118 [notice] Total free space (bytes): 25760
2023/01/04 21:09:16 +118 [notice] Top-most, releasable space (bytes): 25520
2023/01/04 21:09:16 +118 [notice] active:3,rel:0,obs del:0,tw:0
2023/01/04 21:09:16 +118 [notice] conns:3,resp:31,c-resp:16
2023/01/04 21:09:16 +118 [notice] resp fin:0,resp rst:0
2023/01/04 21:09:16 +118 [notice] send:23,send content:11
2023/01/04 21:09:16 +118 [notice] send syn:3, fin:0,reset:0
2023/01/04 21:09:16 +118 [notice] reconnect:0,for no syn:0
2023/01/04 21:09:16 +118 [notice] retransmit:0
2023/01/04 21:09:16 +118 [notice] recv packs after retransmission:0
2023/01/04 21:09:16 +118 [notice] syn cnt:3,all clt:120,clt cont:114
2023/01/04 21:09:16 +118 [notice] total cont retransmit:0, frag:0
2023/01/04 21:09:16 +118 [notice] total captured packets:222
2023/01/04 21:09:46 +118 [notice] active:1,rel:2,obs del:2,tw:0
2023/01/04 21:09:46 +118 [notice] conns:3,resp:31,c-resp:16
2023/01/04 21:09:46 +118 [notice] resp fin:0,resp rst:0
2023/01/04 21:09:46 +118 [notice] send:25,send content:11
2023/01/04 21:09:46 +118 [notice] send syn:3, fin:0,reset:2
2023/01/04 21:09:46 +118 [notice] reconnect:0,for no syn:0
2023/01/04 21:09:46 +118 [notice] retransmit:0
2023/01/04 21:09:46 +118 [notice] recv packs after retransmission:0
2023/01/04 21:09:46 +118 [notice] syn cnt:3,all clt:120,clt cont:114
2023/01/04 21:09:46 +118 [notice] total cont retransmit:0, frag:0
2023/01/04 21:09:46 +118 [notice] total captured packets:222
2023/01/04 21:09:51 +007 [info] replay times:1
2023/01/04 21:09:51 +007 [notice] offline replay is complete
2023/01/04 21:09:51 +007 [warn] sig 64 received
2023/01/04 21:09:51 +007 [notice] active:1,rel:2,obs del:2,tw:0
2023/01/04 21:09:51 +007 [notice] conns:3,resp:31,c-resp:16
2023/01/04 21:09:51 +007 [notice] resp fin:0,resp rst:0
2023/01/04 21:09:51 +007 [notice] send:25,send content:11
2023/01/04 21:09:51 +007 [notice] send syn:3, fin:0,reset:2
2023/01/04 21:09:51 +007 [notice] reconnect:0,for no syn:0
2023/01/04 21:09:51 +007 [notice] retransmit:0
2023/01/04 21:09:51 +007 [notice] recv packs after retransmission:0
2023/01/04 21:09:51 +007 [notice] syn cnt:3,all clt:120,clt cont:114
2023/01/04 21:09:51 +007 [notice] total cont retransmit:0, frag:0
2023/01/04 21:09:51 +007 [notice] total captured packets:222
2023/01/04 21:09:51 +007 [info] session table, size:65536, total:1
2023/01/04 21:09:51 +007 [notice] tc_epoll_destroy, close fd:5
2023/01/04 21:09:51 +007 [notice] tc_epoll_destroy, close fd:6
2023/01/04 21:09:51 +007 [notice] tc_event_loop_finish over
2023/01/04 21:09:51 +007 [notice] user time used:0
2023/01/04 21:09:51 +007 [notice] sys time used:0
2023/01/04 21:09:51 +007 [notice] max memory size:6616
2023/01/04 21:09:51 +007 [notice] Total allocated space (bytes): 9584
2023/01/04 21:09:51 +007 [notice] Total free space (bytes): 125584
2023/01/04 21:09:51 +007 [notice] Top-most, releasable space (bytes): 34880

[wangbin579]

能否解析这件事情，可以通过在测试服务器抓包来确认是否应用层拒绝了请求。
如果存在认证等安全过程，往往需要测试服务降低安全需求才能达到目的