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<li><a class="reference internal" href="#socket-protocol-socket-protocol">socket_protocol (Socket Protocol)</a></li>
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<div class="section" id="module-socket_protocol">
<span id="welcome-to-socket-protocol-s-documentation"></span><h1>Welcome to socket_protocol’s documentation!<a class="headerlink" href="#module-socket_protocol" title="Permalink to this headline">¶</a></h1>
<div class="section" id="socket-protocol-socket-protocol">
<h2>socket_protocol (Socket Protocol)<a class="headerlink" href="#socket-protocol-socket-protocol" title="Permalink to this headline">¶</a></h2>
<p><strong>Author:</strong></p>
<ul class="simple">
<li>Dirk Alders <<a class="reference external" href="mailto:sudo-dirk%40mount-mockery.de">sudo-dirk<span>@</span>mount-mockery<span>.</span>de</a>></li>
</ul>
<p><strong>Description:</strong></p>
<blockquote>
<div>This Module supports point to point communication for client-server issues.</div></blockquote>
<p><strong>Submodules:</strong></p>
<ul class="simple">
<li><a class="reference internal" href="#socket_protocol.pure_json_protocol" title="socket_protocol.pure_json_protocol"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket_protocol.pure_json_protocol</span></code></a></li>
<li><a class="reference internal" href="#socket_protocol.struct_json_protocol" title="socket_protocol.struct_json_protocol"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket_protocol.struct_json_protocol</span></code></a></li>
</ul>
<p><strong>Unittest:</strong></p>
<blockquote>
<div>See also the <a class="reference download internal" download="" href="_downloads/f482679fb1771f4d05403bb87fd0cc34/unittest.pdf"><code class="xref download docutils literal notranslate"><span class="pre">unittest</span></code></a> documentation.</div></blockquote>
<p><strong>Module Documentation:</strong></p>
<dl class="class">
<dt id="socket_protocol.data_storage">
<em class="property">class </em><code class="descclassname">socket_protocol.</code><code class="descname">data_storage</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.data_storage" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>status</strong> (<em>int</em>) – The message status.</li>
<li><strong>service_id</strong> (<em>int</em>) – The Service-ID.</li>
<li><strong>data_id</strong> (<em>int</em>) – The Data-ID.</li>
<li><strong>data</strong> (<em>any</em>) – The transfered data.</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>This is a storage object for socket_protocol messages.</p>
<dl class="method">
<dt id="socket_protocol.data_storage.get_data">
<code class="descname">get_data</code><span class="sig-paren">(</span><em>default=None</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.data_storage.get_data" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>default</strong> – The default value, if no data is available.</td>
</tr>
</tbody>
</table>
<p>This Method returns the message data.</p>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.data_storage.get_data_id">
<code class="descname">get_data_id</code><span class="sig-paren">(</span><em>default=None</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.data_storage.get_data_id" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>default</strong> – The default value, if no data is available.</td>
</tr>
</tbody>
</table>
<p>This Method returns the message Data-ID.</p>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.data_storage.get_service_id">
<code class="descname">get_service_id</code><span class="sig-paren">(</span><em>default=None</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.data_storage.get_service_id" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>default</strong> – The default value, if no data is available.</td>
</tr>
</tbody>
</table>
<p>This Method returns the message Service-ID.</p>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.data_storage.get_status">
<code class="descname">get_status</code><span class="sig-paren">(</span><em>default=None</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.data_storage.get_status" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>default</strong> – The default value, if no data is available.</td>
</tr>
</tbody>
</table>
<p>This Method returns the message status.</p>
</dd></dl>
</dd></dl>
<dl class="class">
<dt id="socket_protocol.pure_json_protocol">
<em class="property">class </em><code class="descclassname">socket_protocol.</code><code class="descname">pure_json_protocol</code><span class="sig-paren">(</span><em>comm_instance</em>, <em>secret=None</em>, <em>auto_auth=False</em>, <em>channel_name=None</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>comm_instance</strong> (<em>instance</em>) – A communication instance.</li>
<li><strong>secret</strong> (<em>str</em>) – An optinal secret (e.g. created by <code class="docutils literal notranslate"><span class="pre">binascii.hexlify(os.urandom(24))</span></code>).</li>
<li><strong>auto_auth</strong> (<em>bool</em>) – An optional parameter (True) to enable automatic authentification, otherwise you need to do it manually, if needed.</li>
<li><strong>channel_name</strong> (<em>str</em>) – An optional parameter to set a channel name for logging of the communication.</li>
</ul>
</td>
</tr>
</tbody>
</table>
<div class="admonition hint">
<p class="first admonition-title">Hint</p>
<p>This <cite>class</cite> supports to transfer a Service-ID, Data-ID and Data.</p>
<ul class="last simple">
<li>The Service-ID is designed to identify the type of the communication (e.g. READ_REQUEST, WRITE_REQUEST, READ_RESPONSE, WRITE_RESPONSE, …)</li>
<li>The Data-ID is designed to identify the requests / responses using the same Service_ID.</li>
</ul>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p>The <code class="xref py py-class docutils literal notranslate"><span class="pre">comm_instance</span></code> needs to have at least the following interface:</p>
<ul class="last simple">
<li>A Method <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.init_channel_name()</span></code> to set the channel name if needed.</li>
<li>A Constant <code class="xref py py-const docutils literal notranslate"><span class="pre">comm_instance.IS_CLIENT</span></code> to identify that the <code class="xref py py-class docutils literal notranslate"><span class="pre">comm_instance</span></code> is a client (True) or a server (False).</li>
<li>A Method <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.is_connected()</span></code> to identify if the instance is connected (True) or not (False).</li>
<li>A Method <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.reconnect()</span></code> to initiate a reconnect.</li>
<li>A Method <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.register_callback()</span></code> to register a data available callback.</li>
<li>A Method <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.register_connect_callback()</span></code> to register a connect callback.</li>
<li>A Method <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.register_disconnect_callback()</span></code> to register a disconnect callback.</li>
<li>A Method <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.send()</span></code> to send data via the <code class="xref py py-class docutils literal notranslate"><span class="pre">comm_instance</span></code>.</li>
</ul>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">The parameter <code class="xref py py-const docutils literal notranslate"><span class="pre">auto_auth</span></code> is only relevant, if a secret is given and the <code class="xref py py-class docutils literal notranslate"><span class="pre">comm_instance</span></code> is a client. The authentification is initiated directly after the connection is established.</p>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p>The <code class="xref py py-const docutils literal notranslate"><span class="pre">channel_name</span></code>-exchange will be initiated by the client directly after the the connection is established.</p>
<ul class="last simple">
<li>If a channel_name is given at both communication sides and they are different, the client name is taken over and the server will log a warning message.</li>
</ul>
</div>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.AUTH_STATE_KEY_TRANSFERRED">
<code class="descname">AUTH_STATE_KEY_TRANSFERRED</code><em class="property"> = 3</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.AUTH_STATE_KEY_TRANSFERRED" title="Permalink to this definition">¶</a></dt>
<dd><p>Authentification Status for ‘Key has been sent’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.AUTH_STATE_SEED_REQUESTED">
<code class="descname">AUTH_STATE_SEED_REQUESTED</code><em class="property"> = 1</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.AUTH_STATE_SEED_REQUESTED" title="Permalink to this definition">¶</a></dt>
<dd><p>Authentification Status for ‘Seed was requested’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.AUTH_STATE_SEED_TRANSFERRED">
<code class="descname">AUTH_STATE_SEED_TRANSFERRED</code><em class="property"> = 2</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.AUTH_STATE_SEED_TRANSFERRED" title="Permalink to this definition">¶</a></dt>
<dd><p>Authentification Status for ‘Seed has been sent’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.AUTH_STATE_TRUSTED_CLIENT">
<code class="descname">AUTH_STATE_TRUSTED_CLIENT</code><em class="property"> = 4</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.AUTH_STATE_TRUSTED_CLIENT" title="Permalink to this definition">¶</a></dt>
<dd><p>Authentification Status for ‘Trusted Connection’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.AUTH_STATE_UNKNOWN_CLIENT">
<code class="descname">AUTH_STATE_UNKNOWN_CLIENT</code><em class="property"> = 0</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.AUTH_STATE_UNKNOWN_CLIENT" title="Permalink to this definition">¶</a></dt>
<dd><p>Authentification Status for ‘Unknown Client’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.AUTH_STATE__NAMES">
<code class="descname">AUTH_STATE__NAMES</code><em class="property"> = {0: 'Unknown Client', 1: 'Seed was requested', 2: 'Seed has been sent', 3: 'Key has been sent', 4: 'Trusted Connection'}</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.AUTH_STATE__NAMES" title="Permalink to this definition">¶</a></dt>
<dd><p>Authentification Status names for previous defined authentification states</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_AUTH_KEY_CHECK_REQUEST">
<code class="descname">SID_AUTH_KEY_CHECK_REQUEST</code><em class="property"> = 3</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_AUTH_KEY_CHECK_REQUEST" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for request for checking a key</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_AUTH_KEY_CHECK_RESPONSE">
<code class="descname">SID_AUTH_KEY_CHECK_RESPONSE</code><em class="property"> = 4</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_AUTH_KEY_CHECK_RESPONSE" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for the authentification response</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_AUTH_KEY_REQUEST">
<code class="descname">SID_AUTH_KEY_REQUEST</code><em class="property"> = 2</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_AUTH_KEY_REQUEST" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for requesting a key for the given seed</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_AUTH_SEED_REQUEST">
<code class="descname">SID_AUTH_SEED_REQUEST</code><em class="property"> = 1</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_AUTH_SEED_REQUEST" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for requesting a seed for authentification</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_CHANNEL_NAME_REQUEST">
<code class="descname">SID_CHANNEL_NAME_REQUEST</code><em class="property"> = 5</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_CHANNEL_NAME_REQUEST" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for requesting a channel name exchange</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_CHANNEL_NAME_RESPONSE">
<code class="descname">SID_CHANNEL_NAME_RESPONSE</code><em class="property"> = 6</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_CHANNEL_NAME_RESPONSE" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for the channel name response</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_EXECUTE_REQUEST">
<code class="descname">SID_EXECUTE_REQUEST</code><em class="property"> = 30</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_EXECUTE_REQUEST" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for a execute request</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_EXECUTE_RESPONSE">
<code class="descname">SID_EXECUTE_RESPONSE</code><em class="property"> = 31</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_EXECUTE_RESPONSE" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for a execute response</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_READ_REQUEST">
<code class="descname">SID_READ_REQUEST</code><em class="property"> = 10</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_READ_REQUEST" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for a read data request</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_READ_RESPONSE">
<code class="descname">SID_READ_RESPONSE</code><em class="property"> = 11</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_READ_RESPONSE" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for read data response</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_WRITE_REQUEST">
<code class="descname">SID_WRITE_REQUEST</code><em class="property"> = 20</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_WRITE_REQUEST" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for a write data request</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID_WRITE_RESPONSE">
<code class="descname">SID_WRITE_RESPONSE</code><em class="property"> = 21</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID_WRITE_RESPONSE" title="Permalink to this definition">¶</a></dt>
<dd><p>SID for a write data response</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID__NO_AUTH_LIST">
<code class="descname">SID__NO_AUTH_LIST</code><em class="property"> = [1, 2, 3, 4, 5, 6]</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID__NO_AUTH_LIST" title="Permalink to this definition">¶</a></dt>
<dd><p>List of SIDs without need of an authentification</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.SID__RESPONSE_DICT">
<code class="descname">SID__RESPONSE_DICT</code><em class="property"> = {1: 2, 2: 3, 3: 4, 5: 6, 10: 11, 20: 21, 30: 31}</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.SID__RESPONSE_DICT" title="Permalink to this definition">¶</a></dt>
<dd><p>Dictionary to get the SID for the response by the key which is the SID for the request</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.STATUS_AUTH_REQUIRED">
<code class="descname">STATUS_AUTH_REQUIRED</code><em class="property"> = 2</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.STATUS_AUTH_REQUIRED" title="Permalink to this definition">¶</a></dt>
<dd><p>Status for ‘authentification is required’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.STATUS_BUFFERING_UNHANDLED_REQUEST">
<code class="descname">STATUS_BUFFERING_UNHANDLED_REQUEST</code><em class="property"> = 1</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.STATUS_BUFFERING_UNHANDLED_REQUEST" title="Permalink to this definition">¶</a></dt>
<dd><p>Status for ‘unhandled request’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.STATUS_CHECKSUM_ERROR">
<code class="descname">STATUS_CHECKSUM_ERROR</code><em class="property"> = 4</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.STATUS_CHECKSUM_ERROR" title="Permalink to this definition">¶</a></dt>
<dd><p>Status for ‘checksum error’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.STATUS_OKAY">
<code class="descname">STATUS_OKAY</code><em class="property"> = 0</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.STATUS_OKAY" title="Permalink to this definition">¶</a></dt>
<dd><p>Status for ‘okay’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.STATUS_OPERATION_NOT_PERMITTED">
<code class="descname">STATUS_OPERATION_NOT_PERMITTED</code><em class="property"> = 5</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.STATUS_OPERATION_NOT_PERMITTED" title="Permalink to this definition">¶</a></dt>
<dd><p>Status for ‘operation not permitted’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.STATUS_SERVICE_OR_DATA_UNKNOWN">
<code class="descname">STATUS_SERVICE_OR_DATA_UNKNOWN</code><em class="property"> = 3</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.STATUS_SERVICE_OR_DATA_UNKNOWN" title="Permalink to this definition">¶</a></dt>
<dd><p>Status for ‘service or data unknown’</p>
</dd></dl>
<dl class="attribute">
<dt id="socket_protocol.pure_json_protocol.STATUS__NAMES">
<code class="descname">STATUS__NAMES</code><em class="property"> = {0: 'Okay', 1: 'Request has no callback. Data buffered.', 2: 'Authentification required', 3: 'Service or Data unknown', 4: 'Checksum Error', 5: 'Operation not permitted'}</em><a class="headerlink" href="#socket_protocol.pure_json_protocol.STATUS__NAMES" title="Permalink to this definition">¶</a></dt>
<dd><p>Status names for previous defined states</p>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.pure_json_protocol.authentificate">
<code class="descname">authentificate</code><span class="sig-paren">(</span><em>timeout=2</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol.authentificate" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
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<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>timeout</strong> (<em>float</em>) – The timeout for the authentification (requesting seed, sending key and getting authentification_feedback).</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body">True, if authentification was successfull; False, if not.</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body">bool</td>
</tr>
</tbody>
</table>
<p>This method authetificates the client at the server.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">An authentification will only processed, if a secret had been given on initialisation.</p>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Client and Server needs to use the same secret.</p>
</div>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.pure_json_protocol.check_authentification_state">
<code class="descname">check_authentification_state</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol.check_authentification_state" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
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<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">True, if authentification state is okay, otherwise False</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">bool</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.pure_json_protocol.connection_established">
<code class="descname">connection_established</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol.connection_established" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
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<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">True, if the connection is established (incl. authentification, if a secret has been given)</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">bool</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.pure_json_protocol.is_connected">
<code class="descname">is_connected</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol.is_connected" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
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<tr class="field-odd field"><th class="field-name">Returns:</th><td class="field-body">True if the <code class="xref py py-class docutils literal notranslate"><span class="pre">comm_instance</span></code> is connected, otherwise False..</td>
</tr>
<tr class="field-even field"><th class="field-name">Return type:</th><td class="field-body">bool</td>
</tr>
</tbody>
</table>
<p>This methods returns the return value of <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.is_connected()</span></code>.</p>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.pure_json_protocol.receive">
<code class="descname">receive</code><span class="sig-paren">(</span><em>service_id</em>, <em>data_id</em>, <em>timeout=1</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol.receive" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
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<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>service_id</strong> (<em>int</em>) – The Service-ID for the message. See class definitions starting with <code class="docutils literal notranslate"><span class="pre">SID_</span></code>.</li>
<li><strong>data_id</strong> (<em>int</em>) – The Data-ID for the message.</li>
<li><strong>timeout</strong> (<em>float</em>) – The timeout for receiving.</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">The received data storage object or None, if no data was received.</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last"><a class="reference internal" href="#socket_protocol.data_storage" title="socket_protocol.data_storage">data_storage</a></p>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.pure_json_protocol.reconnect">
<code class="descname">reconnect</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol.reconnect" title="Permalink to this definition">¶</a></dt>
<dd><p>This methods initiates a reconnect by calling <code class="xref py py-func docutils literal notranslate"><span class="pre">comm_instance.reconnect()</span></code>.</p>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.pure_json_protocol.register_callback">
<code class="descname">register_callback</code><span class="sig-paren">(</span><em>service_id</em>, <em>data_id</em>, <em>callback</em>, <em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol.register_callback" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
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<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>service_id</strong> (<em>int</em>) – The Service-ID for the message. See class definitions starting with <code class="docutils literal notranslate"><span class="pre">SID_</span></code>.</li>
<li><strong>data_id</strong> (<em>int</em>) – The Data-ID for the message.</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">True, if registration was successfull; False, if registration failed (e.g. existance of a callback for this configuration)</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
</td>
</tr>
</tbody>
</table>
<p>This method registers a callback for the given parameters. Givin <code class="docutils literal notranslate"><span class="pre">None</span></code> means, that all Service-IDs or all Data-IDs are used.
If a message hitting these parameters has been received, the callback will be executed.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p>The <code class="xref py py-func docutils literal notranslate"><span class="pre">callback()</span></code> is priorised in the following order:</p>
<ul class="last simple">
<li>Callbacks with defined Service-ID and Data-ID.</li>
<li>Callbacks with a defined Data-ID.</li>
<li>Callbacks with a defined Service-ID.</li>
<li>Unspecific Callbacks</li>
</ul>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p>The <code class="xref py py-func docutils literal notranslate"><span class="pre">callback()</span></code> is executed with these arguments:</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
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<tbody valign="top">
<tr class="field-odd field"><th class="field-name">param msg:</th><td class="field-body">A <a class="reference internal" href="#socket_protocol.data_storage" title="socket_protocol.data_storage"><code class="xref py py-class docutils literal notranslate"><span class="pre">data_storage</span></code></a> object containing all message information.</td>
</tr>
<tr class="field-even field"><th class="field-name">returns:</th><td class="field-body">(<code class="xref py py-const docutils literal notranslate"><span class="pre">status</span></code>, <code class="xref py py-const docutils literal notranslate"><span class="pre">response_data</span></code>)</td>
</tr>
</tbody>
</table>
<ul class="last simple">
<li><code class="xref py py-const docutils literal notranslate"><span class="pre">status</span></code>: A status as defined as a constant of this class <code class="xref py py-const docutils literal notranslate"><span class="pre">STA_*</span></code> to be used as status for the response.</li>
<li><code class="xref py py-const docutils literal notranslate"><span class="pre">response_data</span></code>: A JSON iterable object to be used as data for the response.</li>
</ul>
</div>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Only callbacks defined in <a class="reference internal" href="#socket_protocol.pure_json_protocol.SID__RESPONSE_DICT" title="socket_protocol.pure_json_protocol.SID__RESPONSE_DICT"><code class="xref py py-const docutils literal notranslate"><span class="pre">pure_json_protocol.SID__RESPONSE_DICT</span></code></a> will send a response, using a Service-ID given in the dict and the same Data-ID to the client.</p>
</div>
</dd></dl>
<dl class="method">
<dt id="socket_protocol.pure_json_protocol.send">
<code class="descname">send</code><span class="sig-paren">(</span><em>service_id</em>, <em>data_id</em>, <em>data</em>, <em>status=0</em>, <em>timeout=2</em>, <em>log_lvl=20</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.pure_json_protocol.send" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>service_id</strong> (<em>int</em>) – The Service-ID for the message. See class definitions starting with <code class="docutils literal notranslate"><span class="pre">SERVICE_</span></code>.</li>
<li><strong>data_id</strong> (<em>int</em>) – The Data-ID for the message.</li>
<li><strong>data</strong> (<em>str</em>) – The data to be transfered. The data needs to be json compatible.</li>
<li><strong>status</strong> (<em>int</em>) – The Status for the message. All requests should have <code class="docutils literal notranslate"><span class="pre">STATUS_OKAY</span></code>.</li>
<li><strong>timeout</strong> (<em>float</em>) – The timeout for sending data (e.g. time to establish new connection).</li>
<li><strong>rx_log_lvl</strong> (<em>int</em>) – The log level to log outgoing TX-data</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first">True if data had been sent, otherwise False.</p>
</td>
</tr>
<tr class="field-odd field"><th class="field-name">Return type:</th><td class="field-body"><p class="first last">bool</p>
</td>
</tr>
</tbody>
</table>
<p>This methods sends out a message with the given content.</p>
</dd></dl>
</dd></dl>
<dl class="class">
<dt id="socket_protocol.struct_json_protocol">
<em class="property">class </em><code class="descclassname">socket_protocol.</code><code class="descname">struct_json_protocol</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#socket_protocol.struct_json_protocol" title="Permalink to this definition">¶</a></dt>
<dd><p>This Class has the same functionality like <a class="reference internal" href="#socket_protocol.pure_json_protocol" title="socket_protocol.pure_json_protocol"><code class="xref py py-class docutils literal notranslate"><span class="pre">pure_json_protocol</span></code></a>. The message length is less than for <a class="reference internal" href="#socket_protocol.pure_json_protocol" title="socket_protocol.pure_json_protocol"><code class="xref py py-class docutils literal notranslate"><span class="pre">pure_json_protocol</span></code></a>, but the functionality and compatibility is reduced.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">This class is depreceated and here for compatibility reasons (to support old clients or servers). Usage of <a class="reference internal" href="#socket_protocol.pure_json_protocol" title="socket_protocol.pure_json_protocol"><code class="xref py py-class docutils literal notranslate"><span class="pre">pure_json_protocol</span></code></a> is recommended.</p>
</div>
</dd></dl>
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