为什么Nginx的proxy_pass不定向到asp.net核心应用程序？

Question

我正在使用nginx将具有asp.net core 2.2 api的angular应用程序部署到Ubuntu 18.10。使用1文件中的以下nginx配置，我可以使客户端应用正常运行，但是找不到api应用。 Nginx返回400代码。

当我使用default在本地对其进行检查时，它会做出响应：

但是当我从外面（curl）检查时，响应为：

/ etc / nginx / sites-available / default

curl -v myapp.net/api/user/get

还安装了“让我们加密”证书，看起来似乎可以。

server { root /var/www/html; index index.html index.htm index.nginx-debian.html; server_name myapp.net www.myapp.net; # where the client app location / { rewrite ^/(.*) /$1 break; proxy_pass http://127.0.0.1:444; proxy_set_header Host $host; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection keep-alive; proxy_set_header Host $http_host; proxy_cache_bypass $http_upgrade; } # where the api app location /api/ { proxy_pass http://127.0.0.1:555/; proxy_set_header Host $host; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection keep-alive; proxy_set_header Host $http_host; proxy_cache_bypass $http_upgrade; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; } listen 443 ssl; # managed by Certbot ssl_certificate /etc/letsencrypt/live/myapp.net/fullchain.pem; # managed by Certbot ssl_certificate_key /etc/letsencrypt/live/myapp.net/privkey.pem; # managed by Certbot include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot } server { if ($host = myapp.net) { return 301 https://$host$request_uri; } # managed by Certbot if ($host = www.myapp.net) { return 301 https://$host$request_uri; } # managed by Certbot listen 80 default_server; listen [::]:80 default_server; server_name myapp.net www.myapp.net; return 404; # managed by Certbot } 的内容：

error.log

我已经尝试过的：

1. 在2019/04/20 14:46:17 [debug] 6311#6311: accept on 0.0.0.0:80, ready: 0 2019/04/20 14:46:17 [debug] 6311#6311: posix_memalign: 000055A547F0BF40:512 @16 2019/04/20 14:46:17 [debug] 6311#6311: *11 accept: 178.128.x.x:44294 fd:3 2019/04/20 14:46:17 [debug] 6311#6311: *11 event timer add: 3: 60000:75522395 2019/04/20 14:46:17 [debug] 6311#6311: *11 reusable connection: 1 2019/04/20 14:46:17 [debug] 6311#6311: *11 epoll add event: fd:3 op:1 ev:80002001 2019/04/20 14:46:17 [debug] 6311#6311: *11 http wait request handler 2019/04/20 14:46:17 [debug] 6311#6311: *11 malloc: 000055A547EE91D0:1024 2019/04/20 14:46:17 [debug] 6311#6311: *11 recv: eof:0, avail:1 2019/04/20 14:46:17 [debug] 6311#6311: *11 recv: fd:3 90 of 1024 2019/04/20 14:46:17 [debug] 6311#6311: *11 reusable connection: 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 posix_memalign: 000055A547F08C60:4096 @16 2019/04/20 14:46:17 [debug] 6311#6311: *11 http process request line 2019/04/20 14:46:17 [debug] 6311#6311: *11 http request line: "GET /api/user/get/null HTTP/1.1" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http uri: "/api/user/get/null" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http args: "" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http exten: "" 2019/04/20 14:46:17 [debug] 6311#6311: *11 posix_memalign: 000055A547F33220:4096 @16 2019/04/20 14:46:17 [debug] 6311#6311: *11 http process request header line 2019/04/20 14:46:17 [debug] 6311#6311: *11 http header: "Host: myapp.net" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http header: "User-Agent: curl/7.61.0" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http header: "Accept: */*" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http header done 2019/04/20 14:46:17 [debug] 6311#6311: *11 event timer del: 3: 75522395 2019/04/20 14:46:17 [debug] 6311#6311: *11 generic phase: 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 rewrite phase: 1 2019/04/20 14:46:17 [debug] 6311#6311: *11 http script var 2019/04/20 14:46:17 [debug] 6311#6311: *11 http script var: "myapp.net" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http script value: "myapp.net" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http script equal 2019/04/20 14:46:17 [debug] 6311#6311: *11 http script if 2019/04/20 14:46:17 [debug] 6311#6311: *11 http set discard body 2019/04/20 14:46:17 [debug] 6311#6311: *11 http script copy: "https://" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http script var: "myapp.net" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http script var: "/api/user/get/null" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http finalize request: 301, "/api/user/get/null?" a:1, c:1 2019/04/20 14:46:17 [debug] 6311#6311: *11 http special response: 301, "/api/user/get/null?" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http set discard body 2019/04/20 14:46:17 [debug] 6311#6311: *11 xslt filter header 2019/04/20 14:46:17 [debug] 6311#6311: *11 HTTP/1.1 301 Moved Permanently Server: nginx/1.15.5 (Ubuntu) Date: Sat, 20 Apr 2019 14:46:17 GMT Content-Type: text/html Content-Length: 178 Connection: keep-alive Location: https://myapp.net/api/user/get/null 2019/04/20 14:46:17 [debug] 6311#6311: *11 write new buf t:1 f:0 000055A547F33600, pos 000055A547F33600, size: 219 file: 0, size: 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 http write filter: l:0 f:0 s:219 2019/04/20 14:46:17 [debug] 6311#6311: *11 http output filter "/api/user/get/null?" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http copy filter: "/api/user/get/null?" 2019/04/20 14:46:17 [debug] 6311#6311: *11 image filter 2019/04/20 14:46:17 [debug] 6311#6311: *11 xslt filter body 2019/04/20 14:46:17 [debug] 6311#6311: *11 http postpone filter "/api/user/get/null?" 000055A547F09C48 2019/04/20 14:46:17 [debug] 6311#6311: *11 write old buf t:1 f:0 000055A547F33600, pos 000055A547F33600, size: 219 file: 0, size: 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 write new buf t:0 f:0 0000000000000000, pos 000055A547899AE0, size: 116 file: 0, size: 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 write new buf t:0 f:0 0000000000000000, pos 000055A547899DE0, size: 62 file: 0, size: 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 http write filter: l:1 f:0 s:397 2019/04/20 14:46:17 [debug] 6311#6311: *11 http write filter limit 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 writev: 397 of 397 2019/04/20 14:46:17 [debug] 6311#6311: *11 http write filter 0000000000000000 2019/04/20 14:46:17 [debug] 6311#6311: *11 http copy filter: 0 "/api/user/get/null?" 2019/04/20 14:46:17 [debug] 6311#6311: *11 http finalize request: 0, "/api/user/get/null?" a:1, c:1 2019/04/20 14:46:17 [debug] 6311#6311: *11 set http keepalive handler 2019/04/20 14:46:17 [debug] 6311#6311: *11 http close request 2019/04/20 14:46:17 [debug] 6311#6311: *11 http log handler 2019/04/20 14:46:17 [debug] 6311#6311: *11 free: 000055A547F08C60, unused: 8 2019/04/20 14:46:17 [debug] 6311#6311: *11 free: 000055A547F33220, unused: 2553 2019/04/20 14:46:17 [debug] 6311#6311: *11 free: 000055A547EE91D0 2019/04/20 14:46:17 [debug] 6311#6311: *11 hc free: 0000000000000000 2019/04/20 14:46:17 [debug] 6311#6311: *11 hc busy: 0000000000000000 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 tcp_nodelay 2019/04/20 14:46:17 [debug] 6311#6311: *11 reusable connection: 1 2019/04/20 14:46:17 [debug] 6311#6311: *11 event timer add: 3: 65000:75527395 2019/04/20 14:46:17 [debug] 6311#6311: *11 http keepalive handler 2019/04/20 14:46:17 [debug] 6311#6311: *11 malloc: 000055A547EE91D0:1024 2019/04/20 14:46:17 [debug] 6311#6311: *11 recv: eof:1, avail:1 2019/04/20 14:46:17 [debug] 6311#6311: *11 recv: fd:3 0 of 1024 2019/04/20 14:46:17 [info] 6311#6311: *11 client 178.128.x.x closed keepalive connection 2019/04/20 14:46:17 [info] 6311#6311: *11 client 178.128.x.x closed keepalive connection 2019/04/20 14:46:17 [debug] 6311#6311: *11 close http connection: 3 2019/04/20 14:46:17 [debug] 6311#6311: *11 event timer del: 3: 75527395 2019/04/20 14:46:17 [debug] 6311#6311: *11 reusable connection: 0 2019/04/20 14:46:17 [debug] 6311#6311: *11 free: 000055A547EE91D0 2019/04/20 14:46:17 [debug] 6311#6311: *11 free: 000055A547F0BF40, unused: 136 和location中以斜杠播放；
2. 在proxy_pass中注释include /etc/nginx/sites-enabled/*;

Answer 1

您的屏幕截图显示了两条重要信息。

1. ASP.NET Core应用程序希望在http://localhost:555处收到传入请求，而Host标头应为localhost:555。
2. 您当时的nginx conf正在传递myapp.net作为Host标头。

要修复该conf，我建议您更改Host标头以传递给上游服务器，这似乎可行。