I have build forword proxy on my vps.
It get normal output on my terminal.
An error info occur.

curl: (56) Recv failure: Connection reset by peer

Why https://www.yahoo.com can get by curl with forword proxy,https://dl-ssl.google.com/linux/linux_signing_key.pub can't get by the same forword proxy on the same machine?

Maybe use ' -v ' curl option to add operation details

edit, also https usually use TCP port 443, not 80

1 members found this post helpful.

curl -x "vps_ip:80" -v https://dl-ssl.google.com/linux/linux_signing_key.pub -o /tmp/key.pub
* Hostname was NOT found in DNS cache
* Trying vps_ip...
% 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 vps_ip (vps_ip) port 80 (#0)
* Establish HTTP proxy tunnel to dl-ssl.google.com:443
> CONNECT dl-ssl.google.com:443 HTTP/1.1
> Host: dl-ssl.google.com:443
> User-Agent: curl/7.38.0
> Proxy-Connection: Keep-Alive
>
* Recv failure: Connection reset by peer
* Received HTTP code 0 from proxy after CONNECT
* Closing connection 0
curl: (56) Recv failure: Connection reset by peer