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Top Forums Web Development Http connect to proxy to websockets Post 302780443 by glev2005 on Thursday 14th of March 2013 01:50:35 PM
Old 03-14-2013
Http connect to proxy to websockets

I am having a hard time with this one. We have a websocket server listening on port 80 at We need to test a client program by connecting it to this server through a proxy. I am trying nginx 1.2.7 as the proxy on port 8080, running on proxy-server. We want the client to connect to the proxy using http connect method, and then have the proxy create a tunnel to the websocket app server. Here is my nginx config:
http { include /etc/nginx/mime.types; default_type application/octet-stream;

log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                  '$status $body_bytes_sent "$http_referer" '
                  '"$http_user_agent" "$http_x_forwarded_for"';

access_log  /var/log/nginx/access.log  main;

sendfile        on;
#tcp_nopush     on;

#keepalive_timeout  0;
keepalive_timeout  65;

gzip  on;
    listen  8080;
    listen  80;

    location /wsDemo?ID=12 {
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";

# Load config files from the /etc/nginx/conf.d directory
# The default server is in conf.d/default.conf
include /etc/nginx/conf.d/*.conf;

---------- Post updated at 01:50 PM ---------- Previous update was at 01:48 PM ----------

Currently, it seems like we just get 400 errors.
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SYSTEMD-SOCKET-PROXYD(8)				       systemd-socket-proxyd					  SYSTEMD-SOCKET-PROXYD(8)

systemd-socket-proxyd - Bidirectionally proxy local sockets to another (possibly remote) socket. SYNOPSIS
systemd-socket-proxyd [OPTIONS...] HOST:PORT systemd-socket-proxyd [OPTIONS...] UNIX-DOMAIN-SOCKET-PATH DESCRIPTION
systemd-socket-proxyd is a generic socket-activated network socket forwarder proxy daemon for IPv4, IPv6 and UNIX stream sockets. It may be used to bi-directionally forward traffic from a local listening socket to a local or remote destination socket. One use of this tool is to provide socket activation support for services that do not natively support socket activation. On behalf of the service to activate, the proxy inherits the socket from systemd, accepts each client connection, opens a connection to a configured server for each client, and then bidirectionally forwards data between the two. This utility's behavior is similar to socat(1). The main differences for systemd-socket-proxyd are support for socket activation with "Accept=false" and an event-driven design that scales better with the number of connections. OPTIONS
The following options are understood: -h, --help Print a short help text and exit. --version Print a short version string and exit. --connections-max=, -c Sets the maximum number of simultaneous connections, defaults to 256. If the limit of concurrent connections is reached further connections will be refused. EXIT STATUS
On success, 0 is returned, a non-zero failure code otherwise. EXAMPLES
Simple Example Use two services with a dependency and no namespace isolation. Example 1. proxy-to-nginx.socket [Socket] ListenStream=80 [Install] Example 2. proxy-to-nginx.service [Unit] Requires=nginx.service After=nginx.service Requires=proxy-to-nginx.socket After=proxy-to-nginx.socket [Service] ExecStart=/lib/systemd/systemd-socket-proxyd /tmp/nginx.sock PrivateTmp=yes PrivateNetwork=yes Example 3. nginx.conf [...] server { listen unix:/tmp/nginx.sock; [...] Example 4. Enabling the proxy # systemctl enable --now proxy-to-nginx.socket $ curl http://localhost:80/ Namespace Example Similar as above, but runs the socket proxy and the main service in the same private namespace, assuming that nginx.service has PrivateTmp= and PrivateNetwork= set, too. Example 5. proxy-to-nginx.socket [Socket] ListenStream=80 [Install] Example 6. proxy-to-nginx.service [Unit] Requires=nginx.service After=nginx.service Requires=proxy-to-nginx.socket After=proxy-to-nginx.socket JoinsNamespaceOf=nginx.service [Service] ExecStart=/lib/systemd/systemd-socket-proxyd PrivateTmp=yes PrivateNetwork=yes Example 7. nginx.conf [...] server { listen 8080; [...] Example 8. Enabling the proxy # systemctl enable --now proxy-to-nginx.socket $ curl http://localhost:80/ SEE ALSO
systemd(1), systemd.socket(5), systemd.service(5), systemctl(1), socat(1), nginx(1), curl(1) systemd 237 SYSTEMD-SOCKET-PROXYD(8)

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