[eBPF] Optimize fastcgi protocol inference

[yinjiping]

The purpose is to push all data to the upper layer if the sofa protocol is mistakenly inferred as the fastcgi protocol.

This PR is for:

• Agent

Affected branches

• main
• v6.3

[yinjiping]

测试

修复之前：

2023-10-12 18:31:03.717972 <FASTCGI> RECONFIRM false DIR 1 TYPE 1 PID 883 THREAD_ID 31749 COROUTINE_ID 0 SOURCE 0 ROLE 0 COMM Rpc-netty-serve TCP 10.233.73.38.43368 > 10.233.64.84.1234 LEN 240 SYSCALL_LEN 240 SOCKET_ID 0x43c4b176e813e6c TRACE_ID 0x43c4b176e813e75 TCP_SEQ 2424347424 DATA_SEQ 0 TimeStamp 1697106663717972

修复之后：

2023-10-12 18:32:52.115764 <FASTCGI> RECONFIRM false DIR 1 TYPE 1 PID 883 THREAD_ID 31749 COROUTINE_ID 0 SOURCE 0 ROLE 0 COMM Rpc-netty-serve TCP 10.233.73.38.43368 > 10.233.64.84.1234 LEN 512 SYSCALL_LEN 512 SOCKET_ID 0x53c4b1887519501 TRACE_ID 0x13c4b188751960f TCP_SEQ 2424349092 DATA_SEQ 7 TimeStamp 1697106772115764
2023-10-12 18:32:52.115810 <FASTCGI> RECONFIRM false DIR 1 TYPE 2 PID 883 THREAD_ID 31749 COROUTINE_ID 0 SOURCE 0 ROLE 0 COMM Rpc-netty-serve TCP 10.233.73.38.43368 > 10.233.64.84.1234 LEN 234 SYSCALL_LEN 234 SOCKET_ID 0x53c4b1887519501 TRACE_ID 0x13c4b1887519610 TCP_SEQ 2424349604 DATA_SEQ 8 TimeStamp 1697106772115810
2023-10-12 18:32:52.117701 <FASTCGI> RECONFIRM false DIR 0 TYPE 2 PID 883 THREAD_ID 31749 COROUTINE_ID 0 SOURCE 0 ROLE 0 COMM Rpc-netty-serve TCP 10.233.64.84.1234 > 10.233.73.38.43368 LEN 230 SYSCALL_LEN 230 SOCKET_ID 0x53c4b1887519501 TRACE_ID 0x13c4b1887519610 TCP_SEQ 1787874465 DATA_SEQ 9 TimeStamp 1697106772117701

修复之前只有单方向的一条数据，修复之后有双方向的数据