Before: $ curl -k -v -x localhost:3128 https://www.google.com * Host localhost:3128 was resolved. * IPv6: ::1 * IPv4: 127.0.0.1 * Trying [::1]:3128... * Connected to localhost (::1) port 3128 * CONNECT tunnel: HTTP/1.1 negotiated * allocate connect buffer * Establish HTTP proxy tunnel to www.google.com:443 > CONNECT www.google.com:443 HTTP/1.1 > Host: www.google.com:443 > User-Agent: curl/8.7.1 > Proxy-Connection: Keep-Alive > < HTTP/1.1 200 OK < * CONNECT phase completed * CONNECT tunnel established, response 200 * ALPN: curl offers h2,http/1.1 * (304) (OUT), TLS handshake, Client hello (1): * (304) (IN), TLS handshake, Server hello (2): * (304) (IN), TLS handshake, Unknown (8): * (304) (IN), TLS handshake, Certificate (11): * (304) (IN), TLS handshake, CERT verify (15): * (304) (IN), TLS handshake, Finished (20): * (304) (OUT), TLS handshake, Finished (20): * SSL connection using TLSv1.3 / AEAD-CHACHA20-POLY1305-SHA256 / [blank] / UNDEF * ALPN: server accepted http/1.1 * Server certificate: * subject: O=Forwarder Proxy MITM; CN=www.google.com * start date: Nov 25 12:31:19 2024 GMT * expire date: Nov 27 12:31:19 2024 GMT * issuer: C=US; O=Sauce Labs Inc. * SSL certificate verify result: self signed certificate in certificate chain (19), continuing anyway. * using HTTP/1.x > GET / HTTP/1.1 > Host: www.google.com > User-Agent: curl/8.7.1 > Accept: */* > * Request completely sent off < HTTP/1.1 500 Internal Server Error < Content-Length: 55 < Content-Type: text/plain; charset=utf-8 < X-Forwarder-Error: forwarder Not Modified < forwarder encountered an unexpected error Not Modified * Connection #0 to host localhost left intact After: $ curl -k -v -x localhost:3128 https://www.google.com * Host localhost:3128 was resolved. * IPv6: ::1 * IPv4: 127.0.0.1 * Trying [::1]:3128... * Connected to localhost (::1) port 3128 * CONNECT tunnel: HTTP/1.1 negotiated * allocate connect buffer * Establish HTTP proxy tunnel to www.google.com:443 > CONNECT www.google.com:443 HTTP/1.1 > Host: www.google.com:443 > User-Agent: curl/8.7.1 > Proxy-Connection: Keep-Alive > < HTTP/1.1 200 OK < * CONNECT phase completed * CONNECT tunnel established, response 200 * ALPN: curl offers h2,http/1.1 * (304) (OUT), TLS handshake, Client hello (1): * (304) (IN), TLS handshake, Server hello (2): * (304) (IN), TLS handshake, Unknown (8): * (304) (IN), TLS handshake, Certificate (11): * (304) (IN), TLS handshake, CERT verify (15): * (304) (IN), TLS handshake, Finished (20): * (304) (OUT), TLS handshake, Finished (20): * SSL connection using TLSv1.3 / AEAD-CHACHA20-POLY1305-SHA256 / [blank] / UNDEF * ALPN: server accepted http/1.1 * Server certificate: * subject: O=Forwarder Proxy MITM; CN=www.google.com * start date: Nov 25 12:47:26 2024 GMT * expire date: Nov 27 12:47:26 2024 GMT * issuer: C=US; O=Sauce Labs Inc. * SSL certificate verify result: self signed certificate in certificate chain (19), continuing anyway. * using HTTP/1.x > GET / HTTP/1.1 > Host: www.google.com > User-Agent: curl/8.7.1 > Accept: */* > * Request completely sent off < HTTP/1.1 304 Not Modified < Accept-Ranges: bytes < Access-Control-Allow-Credentials: true < Cache-Control: public, max-age=0 < Content-Encoding: gzip < Content-Type: text/css; charset=UTF-8 < Date: Mon, 19 Aug 2024 22:25:39 GMT < Etag: W/"113bc-191043002c8" < Last-Modified: Tue, 30 Jul 2024 15:09:01 GMT < Server: monocle/0.24.1 < Strict-Transport-Security: max-age=15552000; includeSubDomains < Vary: Origin < * Connection #0 to host localhost left intact Fixes #510

mitm: handle upstream proxy error responses for CONNECT requests #510

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