[root@localhost bpf]# curl -vo /dev/null http://192.168.174.128:80/ * About to connect() to 192.168.174.128 port 80 (#0) * Trying 192.168.174.128... % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Connected to 192.168.174.128 (192.168.174.128) port 80 (#0) > GET / HTTP/1.1 > User-Agent: curl/7.29.0 > Host: 192.168.174.128 > Accept: */* > < HTTP/1.1 200 OK < Server: nginx/1.20.1 < Date: Tue, 12 Apr 2022 07:34:37 GMT < Content-Type: text/html < Content-Length: 8948 < Connection: keep-alive < Accept-Ranges: bytes < Last-Modified: Fri, 01 Apr 2022 09:53:06 GMT < { [data not shown] 89 8948 89 7982 0 0 3544 0 0:00:02 0:00:02 --:--:-- 3544 =====nginx log========= 2022/04/11 15:32:23 [debug] 4047#4047: accept on 0.0.0.0:80, ready: 0 2022/04/11 15:32:23 [debug] 4047#4047: posix_memalign: 000055C1426FDA60:512 @16 2022/04/11 15:32:23 [debug] 4047#4047: *45 accept: 192.168.174.128:61828 fd:3 2022/04/11 15:32:23 [debug] 4047#4047: *45 event timer add: 3: 60000:4628470 2022/04/11 15:32:23 [debug] 4047#4047: *45 reusable connection: 1 2022/04/11 15:32:23 [debug] 4047#4047: *45 epoll add event: fd:3 op:1 ev:80002001 2022/04/11 15:32:23 [debug] 4047#4047: *45 http wait request handler 2022/04/11 15:32:23 [debug] 4047#4047: *45 malloc: 000055C1426FDC70:1024 2022/04/11 15:32:23 [debug] 4047#4047: *45 recv: eof:0, avail:-1 2022/04/11 15:32:23 [debug] 4047#4047: *45 recv: fd:3 79 of 1024 2022/04/11 15:32:23 [debug] 4047#4047: *45 reusable connection: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 posix_memalign: 000055C1426F0C10:4096 @16 2022/04/11 15:32:23 [debug] 4047#4047: *45 http process request line 2022/04/11 15:32:23 [debug] 4047#4047: *45 http request line: "GET / HTTP/1.1" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http uri: "/" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http args: "" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http exten: "" 2022/04/11 15:32:23 [debug] 4047#4047: *45 posix_memalign: 000055C1426B5BB0:4096 @16 2022/04/11 15:32:23 [debug] 4047#4047: *45 http process request header line 2022/04/11 15:32:23 [debug] 4047#4047: *45 http header: "User-Agent: curl/7.29.0" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http header: "Host: 192.168.174.128" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http header: "Accept: */*" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http header done 2022/04/11 15:32:23 [debug] 4047#4047: *45 event timer del: 3: 4628470 2022/04/11 15:32:23 [debug] 4047#4047: *45 generic phase: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 rewrite phase: 1 2022/04/11 15:32:23 [debug] 4047#4047: *45 test location: "/" 2022/04/11 15:32:23 [debug] 4047#4047: *45 using configuration "/" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http cl:-1 max:1048576 2022/04/11 15:32:23 [debug] 4047#4047: *45 rewrite phase: 3 2022/04/11 15:32:23 [debug] 4047#4047: *45 post rewrite phase: 4 2022/04/11 15:32:23 [debug] 4047#4047: *45 generic phase: 5 2022/04/11 15:32:23 [debug] 4047#4047: *45 generic phase: 6 2022/04/11 15:32:23 [debug] 4047#4047: *45 generic phase: 7 2022/04/11 15:32:23 [debug] 4047#4047: *45 generic phase: 8 2022/04/11 15:32:23 [debug] 4047#4047: *45 access phase: 9 2022/04/11 15:32:23 [debug] 4047#4047: *45 access phase: 10 2022/04/11 15:32:23 [debug] 4047#4047: *45 access phase: 11 2022/04/11 15:32:23 [debug] 4047#4047: *45 post access phase: 12 2022/04/11 15:32:23 [debug] 4047#4047: *45 generic phase: 13 2022/04/11 15:32:23 [debug] 4047#4047: *45 generic phase: 14 2022/04/11 15:32:23 [debug] 4047#4047: *45 http init upstream, client timer: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 epoll add event: fd:3 op:3 ev:80002005 2022/04/11 15:32:23 [debug] 4047#4047: *45 http script copy: "Host" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http script var: "127.0.0.1:8090" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http script copy: "Connection" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http script copy: "close" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http script copy: "" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http script copy: "" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "User-Agent: curl/7.29.0" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "Accept: */*" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "GET / HTTP/1.0 Host: 127.0.0.1:8090 Connection: close User-Agent: curl/7.29.0 Accept: */* " 2022/04/11 15:32:23 [debug] 4047#4047: *45 http cleanup add: 000055C1426B64E0 2022/04/11 15:32:23 [debug] 4047#4047: *45 get rr peer, try: 1 2022/04/11 15:32:23 [debug] 4047#4047: *45 stream socket 4 2022/04/11 15:32:23 [debug] 4047#4047: *45 epoll add connection: fd:4 ev:80002005 2022/04/11 15:32:23 [debug] 4047#4047: *45 connect to 127.0.0.1:8090, fd:4 #46 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream connect: -2 2022/04/11 15:32:23 [debug] 4047#4047: *45 posix_memalign: 000055C1426AC6D0:128 @16 2022/04/11 15:32:23 [debug] 4047#4047: *45 event timer add: 4: 60000:4628470 2022/04/11 15:32:23 [debug] 4047#4047: *45 http finalize request: -4, "/?" a:1, c:2 2022/04/11 15:32:23 [debug] 4047#4047: *45 http request count:2 blk:0 2022/04/11 15:32:23 [debug] 4047#4047: *45 http run request: "/?" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream check client, write event:1, "/" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream request: "/?" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream send request handler 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream send request 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream send request body 2022/04/11 15:32:23 [debug] 4047#4047: *45 chain writer buf fl:1 s:97 2022/04/11 15:32:23 [debug] 4047#4047: *45 chain writer in: 000055C1426B6520 2022/04/11 15:32:23 [debug] 4047#4047: *45 writev: 97 of 97 2022/04/11 15:32:23 [debug] 4047#4047: *45 chain writer out: 0000000000000000 2022/04/11 15:32:23 [debug] 4047#4047: *45 event timer del: 4: 4628470 2022/04/11 15:32:23 [debug] 4047#4047: *45 event timer add: 4: 60000:4628470 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream request: "/?" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream process header 2022/04/11 15:32:23 [debug] 4047#4047: *45 malloc: 000055C1426E2330:4096 2022/04/11 15:32:23 [debug] 4047#4047: *45 recv: eof:1, avail:-1 2022/04/11 15:32:23 [debug] 4047#4047: *45 recv: fd:4 4096 of 4096 2022/04/11 15:32:23 [debug] 4047#4047: *45 recv: avail:0 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy status 200 "200 OK" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "Server: webfs/1.21" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "Connection: Close" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "Accept-Ranges: bytes" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "Content-Type: text/html" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "Content-Length: 8948" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "Last-Modified: Fri, 01 Apr 2022 09:53:06 GMT" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header: "Date: Mon, 11 Apr 2022 07:32:23 GMT" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy header done 2022/04/11 15:32:23 [debug] 4047#4047: *45 HTTP/1.1 200 OK Server: nginx/1.20.1 Date: Mon, 11 Apr 2022 07:32:23 GMT Content-Type: text/html Content-Length: 8948 Connection: keep-alive Accept-Ranges: bytes Last-Modified: Fri, 01 Apr 2022 09:53:06 GMT 2022/04/11 15:32:23 [debug] 4047#4047: *45 write new buf t:1 f:0 000055C1426B6870, pos 000055C1426B6870, size: 217 file: 0, size: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 http write filter: l:0 f:0 s:217 2022/04/11 15:32:23 [debug] 4047#4047: *45 http cacheable: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 http proxy filter init s:200 h:0 c:0 l:8948 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream process upstream 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe read upstream: 1 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe preread: 3886 2022/04/11 15:32:23 [debug] 4047#4047: *45 input buf #0 2022/04/11 15:32:23 [debug] 4047#4047: *45 malloc: 000055C1426AF3A0:4096 2022/04/11 15:32:23 [debug] 4047#4047: *45 readv: eof:1, avail:0 2022/04/11 15:32:23 [debug] 4047#4047: *45 readv: 1, last:4096 2022/04/11 15:32:23 [debug] 4047#4047: *45 readv: avail:0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe recv chain: 4096 2022/04/11 15:32:23 [debug] 4047#4047: *45 input buf #1 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe buf in s:1 t:1 f:0 000055C1426E2330, pos 000055C1426E2402, size: 3886 file: 0, size: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe buf in s:1 t:1 f:0 000055C1426AF3A0, pos 000055C1426AF3A0, size: 4096 file: 0, size: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe length: 966 // = 8948 - 3886 - 4096 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe write downstream: 1 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe write busy: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe write buf ls:1 000055C1426E2402 3886 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe write buf ls:1 000055C1426AF3A0 4096 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe write: out:000055C1426B6A88, f:0 2022/04/11 15:32:23 [debug] 4047#4047: *45 http output filter "/?" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http copy filter: "/?" 2022/04/11 15:32:23 [debug] 4047#4047: *45 posix_memalign: 000055C1426B03B0:4096 @16 2022/04/11 15:32:23 [debug] 4047#4047: *45 http postpone filter "/?" 000055C1426B6A78 2022/04/11 15:32:23 [debug] 4047#4047: *45 write old buf t:1 f:0 000055C1426B6870, pos 000055C1426B6870, size: 217 file: 0, size: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 write new buf t:1 f:0 000055C1426E2330, pos 000055C1426E2402, size: 3886 file: 0, size: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 write new buf t:1 f:0 000055C1426AF3A0, pos 000055C1426AF3A0, size: 4096 file: 0, size: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 http write filter: l:0 f:1 s:8199 2022/04/11 15:32:23 [debug] 4047#4047: *45 http write filter limit 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 writev: 8199 of 8199 2022/04/11 15:32:23 [debug] 4047#4047: *45 http write filter 0000000000000000 2022/04/11 15:32:23 [debug] 4047#4047: *45 http copy filter: 0 "/?" 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe write busy: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe write: out:0000000000000000, f:0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe read upstream: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe buf free s:0 t:1 f:0 000055C1426E2330, pos 000055C1426E2330, size: 0 file: 0, size: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe buf free s:0 t:1 f:0 000055C1426AF3A0, pos 000055C1426AF3A0, size: 0 file: 0, size: 0 2022/04/11 15:32:23 [debug] 4047#4047: *45 pipe length: 966 2022/04/11 15:32:23 [debug] 4047#4047: *45 event timer: 4, old: 4628470, new: 4628471 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream request: "/?" 2022/04/11 15:32:23 [debug] 4047#4047: *45 http upstream dummy handler