2025/11/13 10:56:58 [error] 11719#0: *67359995 recv() failed (110: Connection timed out) while proxying and reading from upstream, client: 10.25.xx.91, server: , request: "CONNECT **.**.com:443 HTTP/1.1", host: "**.**.com:443"
2025/11/13 10:57:06 [error] 11718#0: *67359899 recv() failed (110: Connection timed out) while proxying and reading from upstream, client: 10.25.39.92, server: , request: "CONNECT **.**.com:443 HTTP/1.1", host: "**.**.com:443"
2025/11/13 10:57:09 [error] 11719#0: *67360064 recv() failed (110: Connection timed out) while proxying and reading from upstream, client: 10.25.39.92, server: , request: "CONNECT **.**.com:443 HTTP/1.1", host: "**.**.com:443"
2025/11/13 10:58:33 [error] 11720#0: *67360185 recv() failed (110: Connection timed out) while proxying and reading from upstream, client: 10.25.39.91, server: , request: "CONNECT **.**.com:443 HTTP/1.1", host: "**.**.com:443"
2025/11/13 13:34:16 [error] 11720#0: invalid UDP DNS response 28004 fl:8190
2025/11/13 13:34:21 [error] 11720#0: invalid UDP DNS response 28004 fl:8190
2025/11/13 13:34:26 [error] 11720#0: invalid UDP DNS response 28004 fl:8190
2025/11/13 13:34:31 [error] 11720#0: invalid UDP DNS response 28004 fl:8190
2025/11/13 13:34:36 [error] 11720#0: invalid UDP DNS response 28004 fl:8190
2025/11/13 13:34:41 [error] 11720#0: invalid UDP DNS response 28004 fl:8190
2025/11/13 13:34:46 [error] 11720#0: *67425680 proxy_connect: **.**.com could not be resolved (110: Operation timed out), client: 10.25.39.91, server: , request: "CONNECT **.**.com:443 HTTP/1.1", host: "**.**.com:443"

server {
  listen       16666;
  resolver **.**.128.86  valid=60s ipv6=off;  
  
  # ngx_http_proxy_connect_module
  proxy_connect;
  proxy_connect_allow            443 563;
  proxy_connect_connect_timeout  60s;
  proxy_connect_read_timeout     1800s;
  proxy_connect_send_timeout     1800s;

  # proxy模块配置
  proxy_connect_timeout 60s;
  proxy_read_timeout 1800s;
  proxy_send_timeout 1800s;
 
  location / {
      proxy_pass $scheme://$http_host$request_uri;
  }

}