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NGINX proxy, 502 error while SSL handshaking to upstream

Juan Matías
February 25, 2014 10:36AM
Hello everyone, I'm new here and this my first post in this mailing list,

Maybe this is a frequently answered question but I could't find a solution.
Maybe is a "layer 8" issue.

Right now, I have a Nginx(1.0.8) proxy running on Ubuntu 10.04 32bits,
OpenSSL 0.9.8 doing a https upstream on port 33195. Here is a piece of the
nginx.conf file:

.......
location /external_services {
proxy_pass https://x.x.x.x:33195/external_service;
allow x.x.x.x;
deny all;
}
.......


It is working, but I need to migrate this proxy to a new server. This new
server runs Ubuntu 12.04, OpenSSL 1.0.1 and Nginx 1.5.10.

This server receive an http://myproxy/external_services request and proxy
it to https://x.x.x.x:33195/external_service; (http to https)

When I try to access http://myproxy/external_services on the new server, I
got a 502 error and I see this message in error.log :

"peer closed connection in SSL handshake while SSL handshaking to
upstream"

I found that I can connect(from the proxy server) to
https://x.x.x.x:33195/external_service using openssl, doing this:

$ openssl s_client -connect https://x.x.x.x:33195/external_service-no_tls1_1

I tried to disable TLSv1.1 in Nginx using the directive: ssl_protocols
SSLv3 TLSv1; but nothing change.

I don't want to downgrade to Nginx(1.0.8) and OpenSSL 0.9.8 (I think is a
possible solution).

Any help? I'm doing something wrong, I can't find a solution.

Thanks,
Matias.
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Subject Author Posted

NGINX proxy, 502 error while SSL handshaking to upstream

Juan Matías February 25, 2014 10:36AM

Re: NGINX proxy, 502 error while SSL handshaking to upstream

Maxim Dounin February 25, 2014 12:04PM

RE: NGINX proxy, 502 error while SSL handshaking to upstream

Juan Matías March 05, 2014 10:00AM



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