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<h2 id="general">General</h2>
<p><a href="https://github.com/machinezone/cobra">cobra</a> is a real time messaging server. The <code>ws</code> utility can run a cobra server (named snake), and has client to publish and subscribe to a cobra server.</p>
<p>Bring up 3 terminals and run a server, a publisher and a subscriber in each one. As you publish data you should see it being received by the subscriber. You can run <code>redis-cli MONITOR</code> too to see how redis is being used.</p>
<h3 id="server">Server</h3>
<p>You will need to have a redis server running locally. To run the server:</p>
<pre><code class="language-bash">$ cd &lt;ixwebsocket-top-level-folder&gt;/ixsnake/ixsnake
$ ws snake
{
&quot;apps&quot;: {
&quot;FC2F10139A2BAc53BB72D9db967b024f&quot;: {
&quot;roles&quot;: {
&quot;_sub&quot;: {
&quot;secret&quot;: &quot;66B1dA3ED5fA074EB5AE84Dd8CE3b5ba&quot;
},
&quot;_pub&quot;: {
&quot;secret&quot;: &quot;1c04DB8fFe76A4EeFE3E318C72d771db&quot;
}
}
}
}
}
redis host: 127.0.0.1
redis password:
redis port: 6379
</code></pre>
<h3 id="publisher">Publisher</h3>
<pre><code class="language-bash">$ cd &lt;ixwebsocket-top-level-folder&gt;/ws
$ ws cobra_publish --appkey FC2F10139A2BAc53BB72D9db967b024f --endpoint ws://127.0.0.1:8008 --rolename _pub --rolesecret 1c04DB8fFe76A4EeFE3E318C72d771db test_channel cobraMetricsSample.json
[2019-11-27 09:06:12.980] [info] Publisher connected
[2019-11-27 09:06:12.980] [info] Connection: Upgrade
[2019-11-27 09:06:12.980] [info] Sec-WebSocket-Accept: zTtQKMKbvwjdivURplYXwCVUCWM=
[2019-11-27 09:06:12.980] [info] Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
[2019-11-27 09:06:12.980] [info] Server: ixwebsocket/7.4.0 macos ssl/DarwinSSL zlib 1.2.11
[2019-11-27 09:06:12.980] [info] Upgrade: websocket
[2019-11-27 09:06:12.982] [info] Publisher authenticated
[2019-11-27 09:06:12.982] [info] Published msg 3
[2019-11-27 09:06:12.982] [info] Published message id 3 acked
</code></pre>
<h3 id="subscriber">Subscriber</h3>
<pre><code class="language-bash">$ ws cobra_subscribe --appkey FC2F10139A2BAc53BB72D9db967b024f --endpoint ws://127.0.0.1:8008 --rolename _pub --rolesecret 1c04DB8fFe76A4EeFE3E318C72d771db test_channel
#messages 0 msg/s 0
[2019-11-27 09:07:39.341] [info] Subscriber connected
[2019-11-27 09:07:39.341] [info] Connection: Upgrade
[2019-11-27 09:07:39.341] [info] Sec-WebSocket-Accept: 9vkQWofz49qMCUlTSptCCwHWm+Q=
[2019-11-27 09:07:39.341] [info] Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
[2019-11-27 09:07:39.341] [info] Server: ixwebsocket/7.4.0 macos ssl/DarwinSSL zlib 1.2.11
[2019-11-27 09:07:39.341] [info] Upgrade: websocket
[2019-11-27 09:07:39.342] [info] Subscriber authenticated
[2019-11-27 09:07:39.345] [info] Subscriber: subscribed to channel test_channel
#messages 0 msg/s 0
#messages 0 msg/s 0
#messages 0 msg/s 0
{&quot;baz&quot;:123,&quot;foo&quot;:&quot;bar&quot;}
#messages 1 msg/s 1
#messages 1 msg/s 0
#messages 1 msg/s 0
{&quot;baz&quot;:123,&quot;foo&quot;:&quot;bar&quot;}
{&quot;baz&quot;:123,&quot;foo&quot;:&quot;bar&quot;}
#messages 3 msg/s 2
#messages 3 msg/s 0
{&quot;baz&quot;:123,&quot;foo&quot;:&quot;bar&quot;}
#messages 4 msg/s 1
^C
</code></pre></div>
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<changefreq>daily</changefreq> <changefreq>daily</changefreq>
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@ -42,9 +42,6 @@
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@ -130,11 +127,6 @@
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@ -158,13 +150,6 @@ Subcommands:
broadcast_server Broadcasting server broadcast_server Broadcasting server
ping Ping pong ping Ping pong
curl HTTP Client curl HTTP Client
redis_publish Redis publisher
redis_subscribe Redis subscriber
cobra_subscribe Cobra subscriber
cobra_publish Cobra publisher
cobra_to_statsd Cobra to statsd
cobra_to_sentry Cobra to sentry
snake Snake server
httpd HTTP server httpd HTTP server
</code></pre> </code></pre>
<h2 id="curl">curl</h2> <h2 id="curl">curl</h2>
@ -370,12 +355,8 @@ Listening on 127.0.0.1:8008
<p>If you connect to ws://127.0.0.1:8008, the proxy will connect to ws://127.0.0.1:9000 and pass all traffic to this server.</p> <p>If you connect to ws://127.0.0.1:8008, the proxy will connect to ws://127.0.0.1:9000 and pass all traffic to this server.</p>
<p>You can also use a more complex setup if you want to redirect to different websocket servers based on the hostname your client is trying to connect to. If you have multiple CNAME aliases that point to the same server.</p> <p>You can also use a more complex setup if you want to redirect to different websocket servers based on the hostname your client is trying to connect to. If you have multiple CNAME aliases that point to the same server.</p>
<p>A JSON config file is used to express that mapping ; here connecting to echo.jeanserge.com will proxy the client to ws://localhost:8008 on the local machine (which actually runs ws echo_server), while connecting to bavarde.jeanserge.com will proxy the client to ws://localhost:5678 where a cobra python server is running. As a side note you will need a wildcard SSL certificate if you want to have SSL enabled on that machine.</p> <p>A JSON config file is used to express that mapping ; here connecting to echo.jeanserge.com will proxy the client to ws://localhost:8008 on the local machine (which actually runs ws echo_server), while connecting to bavarde.jeanserge.com will proxy the client to ws://localhost:5678 where a cobra python server is running. As a side note you will need a wildcard SSL certificate if you want to have SSL enabled on that machine.</p>
<pre><code class="language-json">{ <pre><code>echo.jeanserge.com=ws://localhost:8008
&quot;remote_urls&quot;: { bavarde.jeanserge.com=ws://localhost:5678
&quot;echo.jeanserge.com&quot;: &quot;ws://localhost:8008&quot;,
&quot;bavarde.jeanserge.com&quot;: &quot;ws://localhost:5678&quot;
}
}
</code></pre> </code></pre>
<p>The --config_path option is required to instruct ws proxy_server to read that file.</p> <p>The --config_path option is required to instruct ws proxy_server to read that file.</p>
<pre><code>ws proxy_server --config_path proxyConfig.json --port 8765 <pre><code>ws proxy_server --config_path proxyConfig.json --port 8765
@ -412,116 +393,7 @@ Options:
--compress Enable gzip compression --compress Enable gzip compression
--connect-timeout INT Connection timeout --connect-timeout INT Connection timeout
--transfer-timeout INT Transfer timeout --transfer-timeout INT Transfer timeout
</code></pre> </code></pre></div>
<h2 id="cobra-client-and-server">Cobra client and server</h2>
<p><a href="https://github.com/machinezone/cobra">cobra</a> is a real time messenging server. ws has several sub-command to interact with cobra. There is also a minimal cobra compatible server named snake available.</p>
<p>Below are examples on running a snake server and clients with TLS enabled (the server only works with the OpenSSL and the Mbed TLS backend for now).</p>
<p>First, generate certificates.</p>
<pre><code>$ cd /path/to/IXWebSocket
$ cd ixsnake/ixsnake
$ bash ../../ws/generate_certs.sh
Generating RSA private key, 2048 bit long modulus
.....+++
.................+++
e is 65537 (0x10001)
generated ./.certs/trusted-ca-key.pem
generated ./.certs/trusted-ca-crt.pem
Generating RSA private key, 2048 bit long modulus
..+++
.......................................+++
e is 65537 (0x10001)
generated ./.certs/trusted-server-key.pem
Signature ok
subject=/O=machinezone/O=IXWebSocket/CN=trusted-server
Getting CA Private Key
generated ./.certs/trusted-server-crt.pem
Generating RSA private key, 2048 bit long modulus
...................................+++
..................................................+++
e is 65537 (0x10001)
generated ./.certs/trusted-client-key.pem
Signature ok
subject=/O=machinezone/O=IXWebSocket/CN=trusted-client
Getting CA Private Key
generated ./.certs/trusted-client-crt.pem
Generating RSA private key, 2048 bit long modulus
..............+++
.......................................+++
e is 65537 (0x10001)
generated ./.certs/untrusted-ca-key.pem
generated ./.certs/untrusted-ca-crt.pem
Generating RSA private key, 2048 bit long modulus
..........+++
................................................+++
e is 65537 (0x10001)
generated ./.certs/untrusted-client-key.pem
Signature ok
subject=/O=machinezone/O=IXWebSocket/CN=untrusted-client
Getting CA Private Key
generated ./.certs/untrusted-client-crt.pem
Generating RSA private key, 2048 bit long modulus
.....................................................................................+++
...........+++
e is 65537 (0x10001)
generated ./.certs/selfsigned-client-key.pem
Signature ok
subject=/O=machinezone/O=IXWebSocket/CN=selfsigned-client
Getting Private key
generated ./.certs/selfsigned-client-crt.pem
</code></pre>
<p>Now run the snake server.</p>
<pre><code>$ export certs=.certs
$ ws snake --tls --port 8765 --cert-file ${certs}/trusted-server-crt.pem --key-file ${certs}/trusted-server-key.pem --ca-file ${certs}/trusted-ca-crt.pem
{
&quot;apps&quot;: {
&quot;FC2F10139A2BAc53BB72D9db967b024f&quot;: {
&quot;roles&quot;: {
&quot;_sub&quot;: {
&quot;secret&quot;: &quot;66B1dA3ED5fA074EB5AE84Dd8CE3b5ba&quot;
},
&quot;_pub&quot;: {
&quot;secret&quot;: &quot;1c04DB8fFe76A4EeFE3E318C72d771db&quot;
}
}
}
}
}
redis host: 127.0.0.1
redis password:
redis port: 6379
</code></pre>
<p>As a new connection comes in, such output should be printed</p>
<pre><code>[2019-12-19 20:27:19.724] [info] New connection
id: 0
Uri: /v2?appkey=_health
Headers:
Connection: Upgrade
Host: 127.0.0.1:8765
Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
Sec-WebSocket-Key: d747B0fE61Db73f7Eh47c0==
Sec-WebSocket-Protocol: json
Sec-WebSocket-Version: 13
Upgrade: websocket
User-Agent: ixwebsocket/7.5.8 macos ssl/OpenSSL OpenSSL 1.0.2q 20 Nov 2018 zlib 1.2.11
</code></pre>
<p>To connect and publish a message, do:</p>
<pre><code>$ export certs=.certs
$ cd /path/to/ws/folder
$ ls cobraMetricsSample.json
cobraMetricsSample.json
$ ws cobra_publish --endpoint wss://127.0.0.1:8765 --appkey FC2F10139A2BAc53BB72D9db967b024f --rolename _pub --rolesecret 1c04DB8fFe76A4EeFE3E318C72d771db --channel foo --cert-file ${certs}/trusted-client-crt.pem --key-file ${certs}/trusted-client-key.pem --ca-file ${certs}/trusted-ca-crt.pem cobraMetricsSample.json
[2019-12-19 20:46:42.656] [info] Publisher connected
[2019-12-19 20:46:42.657] [info] Connection: Upgrade
[2019-12-19 20:46:42.657] [info] Sec-WebSocket-Accept: rs99IFThoBrhSg+k8G4ixH9yaq4=
[2019-12-19 20:46:42.657] [info] Sec-WebSocket-Extensions: permessage-deflate; server_max_window_bits=15; client_max_window_bits=15
[2019-12-19 20:46:42.657] [info] Server: ixwebsocket/7.5.8 macos ssl/OpenSSL OpenSSL 1.0.2q 20 Nov 2018 zlib 1.2.11
[2019-12-19 20:46:42.657] [info] Upgrade: websocket
[2019-12-19 20:46:42.658] [info] Publisher authenticated
[2019-12-19 20:46:42.658] [info] Published msg 3
[2019-12-19 20:46:42.659] [info] Published message id 3 acked
</code></pre>
<p>To use OpenSSL on macOS, compile with <code>make ws_openssl</code>. First you will have to install OpenSSL libraries, which can be done with Homebrew. Use <code>make ws_mbedtls</code> accordingly to use MbedTLS.</p></div>
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