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--- dev:websockets:gateway:websocketd [2018/06/11 14:50] – [Modify NGINX to proxy websocketd] erickson
+++ dev:websockets:gateway:websocketd [2022/02/10 13:34] (current) – external edit 127.0.0.1
@@ Line 20: / Line 20: @@
   * Speed is consistent with Apache (within fractions of milliseconds)
   * Websocketd project has a lot more activity and contributors than the apache-websocket code we're currently using.
+  * fewer steps to set up
 ===== Concerns? =====
@@ Line 45: / Line 46: @@
 </code>
-==== Run Websocketd on port 7684 ====
+==== Run Websocketd on port 7682 ====
 <code>
+# Stop apache-websockets first since we're reusing the port.
+sudo systemctl stop apache2-websockets # or similar
 # AS USER opensrf
-/usr/local/bin/websocketd --loglevel info --maxforks 250 --port 7684 /openils/bin/osrf-websocket-stdio
+/usr/local/bin/websocketd --loglevel info --maxforks 250 --port 7682 /openils/bin/osrf-websocket-stdio
 # Or optionally override the config file path
-/usr/local/bin/websocketd --loglevel info --maxforks 250 --port 7684 /openils/bin/osrf-websocket-stdio /path/to/opensrf_core.xml
+/usr/local/bin/websocketd --loglevel info --maxforks 250 --port 7682 /openils/bin/osrf-websocket-stdio /path/to/opensrf_core.xml
 # Optionally background the process with a trailing '&'
 </code>
+Full set of command line args at https://github.com/joewalnes/websocketd/blob/master/help.go
 ==== Modify NGINX to proxy websocketd ====
@@ Line 63: / Line 68: @@
 <code>
-# comment out the apache-websocket proxy.
+# Websocketd supports SSL, but I run it in non-SSL mode since it's on the same machine as NGINX.
-# proxy_pass https://localhost:7682;
+# Replace https:// with http://
+proxy_pass http://localhost:7682;
-# I run websocketd in non-SSL (http://) mode behind the proxy
+# Update timeout values within the /osrf-websocket-translator section
-proxy_pass http://localhost:7684;
+# to disconnect idle clients.
-# Update timeout values to disconnect idle clients.
 # The osrf-websocket-stdio handler has no idle timeout threads.
 # Change to suit
@@ Line 107: / Line 111: @@
 Log in to the browser client as usual.
+==== Optional Systemd Setup ====
+Websocketd is a standalone program with no daemon mode ([[https://github.com/joewalnes/websocketd/issues/300|not yet anyway]]).  Systemd to the rescue.
+Put this content into file /lib/systemd/system/websocketd-osrf.service
+<code>
+[Unit]
+Description=Websocketd OpenSRF Gateway
+[Service]
+Type=simple
+User=opensrf
+Group=opensrf
+Environment=PATH=/openils/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+Environment=LD_LIBRARY_PATH=/openils/lib:/usr/local/lib:/usr/local/lib/dbd:$LD_LIBRARY_PATH
+ExecStart=/usr/local/bin/websocketd --loglevel error --maxforks 250 --port 7682 /openils/bin/osrf-websocket-stdio
+# modify websocketd command line options to taste
+# --sameorigin and --origin=domain1,domain2 flags are also supported for security.
+# On Ubuntu 18.04, you may also need to include something like this:
+[Install]
+WantedBy=multi-user.target
+</code>
+Then add & start the service.
+<code>
+# disable apache2-websockets to avoid unintended starts & port conflicts
+sudo systemctl disable apache2-websockets
+# enable and start websocketd-osrf
+sudo systemctl daemon-reload
+sudo systemctl enable websocketd-osrf
+sudo systemctl start websocketd-osrf
+</code>