Kura-kuran proxy na 502 Bad Gateway: gano wanda ya aiko shi

Yadda kuskuren 502 daga proxy yake

Mun sa gwajin proxy ɗinmu ya mayar da 502 kuma muka ɗauki bayanan amsoshin, an sake rubuta su da 203.0.113.10:8080 da user123:pass456:

• Shafin HTTPS: curl -x http://user123:[email protected]:8080 https://example.com yana buga curl: (56) CONNECT tunnel failed, response 502.
• Shafin HTTP na yau da kullun: curl yana karɓar matsayin 502.
• Chrome da ke loda shafin HTTPS ta wannan proxy yana bayar da rahoton ERR_TUNNEL_CONNECTION_FAILED kuma ba ya nuna shafin 502 ko kaɗan.
• Mai duba proxy yana nuna HTTP 502; sauran lambobin suna bayyana a daidai wannan hanyar a matsayin HTTP <code>.

Alamar gane hakan: shafin 502 a kan shafin HTTPS

Ga shafukan HTTPS, proxy yana buɗe hanyar wucewa (tunnel) ne kawai; ba zai iya sanya shafinsa a cikin haɗin da aka rufa asirinsa ba. Idan proxy ya ƙi, Chrome zai ba da rahoton ERR_TUNNEL_CONNECTION_FAILED. Don haka lokacin da ka ga cikakken shafin "502 Bad Gateway" ya bayyana a kan adireshin https://, kusan babu shakka daga sabar gidan yanar gizon ya fito, ba daga proxy ba.

Tabbatar da hakan ta hanyar kashe proxy da sake loda shafin. Idan har yanzu 502 ne, gidan yanar gizon ne ke fuskantar matsala, kuma jira ko sanar da mai shafin shi kaɗai ne abin da za ka iya yi.

Lokacin da a zahiri proxy ne ke aiko da 502

• Wurin da ake son zuwa ba ya amsa wa proxy. Shafin ya faɗi, an yi masa lodi da yawa, ko kuma yana ƙin karɓar haɗi daga kewayon IP na proxy.
• Kuskuren rubuta yankin shafi ko wanda ba a iya ganowa. Proxy ba zai iya samun adireshin shafin ba, don haka babu abin da za a tura buƙatar zuwa gare shi.
• Port na wurin da ake son zuwa a rufe yake. Buƙatar tana neman port ɗin da shafin ba ya aiki a kansa.
• Kuskure na ɗan lokaci daga ɓangaren proxy. Wannan yana da wuya; za ka lura da shi lokacin da kowane shafi ke mayar da 502 ta proxy ɗaya amma yana aiki ta wani daban.

Abin da za a yi a kowane yanayi

• Bayananan martaba na Chrome ko antidetect: buɗe wani babban shafi daban a cikin wannan bayanin martaba. Idan wannan ya buɗe, to proxy yana lafiya kuma shafin asali ne ke da matsalar.
• Wayoyi: kashe proxy na Wi-Fi kuma gwada shafin ta amfani da bayanan wayar salula (mobile data) don ganin ko shafin yana fuskantar matsala ga kowa.
• curl: ƙara -v don ganin isowar 502 nan da nan bayan CONNECT, sannan ka sake gwadawa da wani yankin shafi daban don rage fannin bincike.
• Python requests: ga shafukan HTTP bincika response.status_code == 502 sannan ka sake gwadawa bayan ɗan dakatawa; ga shafukan HTTPS hanyar da ta gaza ana nuna ta a matsayin requests.exceptions.ProxyError. Ba da sarari tsakanin sake gwadawa maimakon matsa wa shafin lodi da yawa.

Mataki-mataki

1. 1

   Lura da inda 502 ya bayyana

   Shafin 502 a kan adireshin https yana nuna cewa daga gidan yanar gizon ne. Kuskuren tunnel a Chrome yana nuna hanyar proxy.

2. 2

   Kashe proxy kuma sake lodawa

   Samun 502 ba tare da proxy ba yana nufin gidan yanar gizon ne kansa yake da matsala.

3. 3

   Loda wani shafin ta wannan proxy ɗin

   Idan sauran shafuka suna aiki, to proxy yana lafiya kuma shafin asali ne kawai ya ƙi ko ya faɗi.

4. 4

   Duba proxy da mai dubawa

   Manna layin a cikin mai duba proxy. Idan kowane shafi ya ba da HTTP 502, buɗe tikiti tare da sakamakon.

Tambayoyin da aka fi yi