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<div id="projectname">lwIP<span id="projectnumber">&#160;2.1.3</span>
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<div id="projectbrief">Lightweight IP stack</div>
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<a href="#func-members">Functions</a> </div>
<div class="headertitle"><div class="title">api_lib.c File Reference</div></div>
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<div class="textblock"><code>#include &quot;<a class="el" href="opt_8h.html">lwip/opt.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="api_8h.html">lwip/api.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="memp_8h.html">lwip/memp.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="ip_8h.html">lwip/ip.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="raw_8h.html">lwip/raw.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="udp_8h.html">lwip/udp.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="api__msg_8h.html">lwip/priv/api_msg.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="tcp__priv_8h.html">lwip/priv/tcp_priv.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="tcpip__priv_8h.html">lwip/priv/tcpip_priv.h</a>&quot;</code><br />
<code>#include &quot;path/to/my/lwip_hooks.h&quot;</code><br />
<code>#include &lt;string.h&gt;</code><br />
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a42711660e5030bc0dff779f3cea4178e" id="r_a42711660e5030bc0dff779f3cea4178e"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structnetconn.html">netconn</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a42711660e5030bc0dff779f3cea4178e">netconn_new_with_proto_and_callback</a> (enum <a class="el" href="group__netconn__common.html#gaaba260d28d105fb4bce9185fd0300d91">netconn_type</a> t, u8_t proto, <a class="el" href="api_8h.html#ae9307baa49245990c8c4517bb4e8d47b">netconn_callback</a> callback)</td></tr>
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<tr class="memitem:ga6ec6b2cf7b0f59e9371e38ae7dea2a63" id="r_ga6ec6b2cf7b0f59e9371e38ae7dea2a63"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__netconn__tcp.html#ga6ec6b2cf7b0f59e9371e38ae7dea2a63">netconn_shutdown</a> (struct <a class="el" href="structnetconn.html">netconn</a> *conn, u8_t shut_rx, u8_t shut_tx)</td></tr>
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<tr class="memitem:gaaaf2f92eeb38dca70b3e6ad98c3c45ed" id="r_gaaaf2f92eeb38dca70b3e6ad98c3c45ed"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__netconn__udp.html#gaaaf2f92eeb38dca70b3e6ad98c3c45ed">netconn_join_leave_group</a> (struct <a class="el" href="structnetconn.html">netconn</a> *conn, const <a class="el" href="group__ipaddr.html#ga335a8c9df66319e88a1a529047ce0a1e">ip_addr_t</a> *multiaddr, const <a class="el" href="group__ipaddr.html#ga335a8c9df66319e88a1a529047ce0a1e">ip_addr_t</a> *netif_addr, enum <a class="el" href="api_8h.html#a5c6ded2c082de1536019b197a0a912db">netconn_igmp</a> join_or_leave)</td></tr>
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<tr class="memitem:gafb3494b149dff96ed8d1acb770ab52f5" id="r_gafb3494b149dff96ed8d1acb770ab52f5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__netconn__common.html#gafb3494b149dff96ed8d1acb770ab52f5">netconn_gethostbyname_addrtype</a> (const char *name, <a class="el" href="group__ipaddr.html#ga335a8c9df66319e88a1a529047ce0a1e">ip_addr_t</a> *addr, u8_t dns_addrtype)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Sequential API External module </p>
</div><h2 class="groupheader">Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a28430d1d86733f1bf98dc31305c42104">&#9670;&#160;</a></span>netconn_getaddr()</h2>
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<td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> netconn_getaddr </td>
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<td class="paramtype">struct <a class="el" href="structnetconn.html">netconn</a> *</td> <td class="paramname"><span class="paramname"><em>conn</em></span>, </td>
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<td class="paramtype"><a class="el" href="group__ipaddr.html#ga335a8c9df66319e88a1a529047ce0a1e">ip_addr_t</a> *</td> <td class="paramname"><span class="paramname"><em>addr</em></span>, </td>
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<td class="paramtype">u16_t *</td> <td class="paramname"><span class="paramname"><em>port</em></span>, </td>
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<td class="paramtype">u8_t</td> <td class="paramname"><span class="paramname"><em>local</em></span>&#160;)</td>
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<p>Get the local or remote IP address and port of a netconn. For RAW netconns, this returns the protocol instead of a port!</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">conn</td><td>the netconn to query </td></tr>
<tr><td class="paramname">addr</td><td>a pointer to which to save the IP address </td></tr>
<tr><td class="paramname">port</td><td>a pointer to which to save the port (or protocol for RAW) </td></tr>
<tr><td class="paramname">local</td><td>1 to get the local IP address, 0 to get the remote one </td></tr>
</table>
</dd>
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<dl class="section return"><dt>Returns</dt><dd>ERR_CONN for invalid connections ERR_OK if the information was retrieved </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a42711660e5030bc0dff779f3cea4178e">&#9670;&#160;</a></span>netconn_new_with_proto_and_callback()</h2>
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<td class="memname">struct <a class="el" href="structnetconn.html">netconn</a> * netconn_new_with_proto_and_callback </td>
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<td class="paramtype">enum <a class="el" href="group__netconn__common.html#gaaba260d28d105fb4bce9185fd0300d91">netconn_type</a></td> <td class="paramname"><span class="paramname"><em>t</em></span>, </td>
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<td class="paramtype">u8_t</td> <td class="paramname"><span class="paramname"><em>proto</em></span>, </td>
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<td class="paramtype"><a class="el" href="api_8h.html#ae9307baa49245990c8c4517bb4e8d47b">netconn_callback</a></td> <td class="paramname"><span class="paramname"><em>callback</em></span>&#160;)</td>
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<p>Create a new netconn (of a specific type) that has a callback function. The corresponding pcb is also created.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">t</td><td>the type of 'connection' to create (</td></tr>
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<dl class="section see"><dt>See also</dt><dd>enum <a class="el" href="api_8h.html#a62cd17ad03bb2817cb0c419e1c9790b1">netconn_type</a>) </dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">proto</td><td>the IP protocol for RAW IP pcbs </td></tr>
<tr><td class="paramname">callback</td><td>a function to call on status changes (RX available, TX'ed) </td></tr>
</table>
</dd>
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<dl class="section return"><dt>Returns</dt><dd>a newly allocated struct netconn or NULL on memory error </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a805a90b546c5a149f04782351633979b">&#9670;&#160;</a></span>netconn_recv_udp_raw_netbuf()</h2>
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<td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> netconn_recv_udp_raw_netbuf </td>
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<td class="paramtype">struct <a class="el" href="structnetconn.html">netconn</a> *</td> <td class="paramname"><span class="paramname"><em>conn</em></span>, </td>
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<td class="paramtype">struct <a class="el" href="structnetbuf.html">netbuf</a> **</td> <td class="paramname"><span class="paramname"><em>new_buf</em></span>&#160;)</td>
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<p>Receive data (in form of a netbuf) from a UDP or RAW netconn</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">conn</td><td>the netconn from which to receive data </td></tr>
<tr><td class="paramname">new_buf</td><td>pointer where a new netbuf is stored when received data </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>ERR_OK if data has been received, an error code otherwise (timeout, memory error or another error) ERR_ARG if conn is not a UDP/RAW netconn </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a505c3b8e400babf9681e09c945b7f421">&#9670;&#160;</a></span>netconn_recv_udp_raw_netbuf_flags()</h2>
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<td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> netconn_recv_udp_raw_netbuf_flags </td>
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<td class="paramtype">struct <a class="el" href="structnetconn.html">netconn</a> *</td> <td class="paramname"><span class="paramname"><em>conn</em></span>, </td>
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<td class="paramtype">struct <a class="el" href="structnetbuf.html">netbuf</a> **</td> <td class="paramname"><span class="paramname"><em>new_buf</em></span>, </td>
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<td class="paramtype">u8_t</td> <td class="paramname"><span class="paramname"><em>apiflags</em></span>&#160;)</td>
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<p>Receive data (in form of a netbuf) from a UDP or RAW netconn</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">conn</td><td>the netconn from which to receive data </td></tr>
<tr><td class="paramname">new_buf</td><td>pointer where a new netbuf is stored when received data </td></tr>
<tr><td class="paramname">apiflags</td><td>flags that control function behaviour. For now only:<ul>
<li>NETCONN_DONTBLOCK: only read data that is available now, don't wait for more data </li>
</ul>
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<dl class="section return"><dt>Returns</dt><dd>ERR_OK if data has been received, an error code otherwise (timeout, memory error or another error) ERR_ARG if conn is not a UDP/RAW netconn </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a992b4fe8a855fd94861738f7260d0a32">&#9670;&#160;</a></span>netconn_write_vectors_partly()</h2>
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<td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> netconn_write_vectors_partly </td>
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<td class="paramtype">struct <a class="el" href="structnetconn.html">netconn</a> *</td> <td class="paramname"><span class="paramname"><em>conn</em></span>, </td>
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<td class="paramtype">struct <a class="el" href="structnetvector.html">netvector</a> *</td> <td class="paramname"><span class="paramname"><em>vectors</em></span>, </td>
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<td class="paramtype">u16_t</td> <td class="paramname"><span class="paramname"><em>vectorcnt</em></span>, </td>
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<td class="paramtype">size_t *</td> <td class="paramname"><span class="paramname"><em>bytes_written</em></span>&#160;)</td>
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<p>Send vectorized data atomically over a TCP netconn.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">conn</td><td>the TCP netconn over which to send data </td></tr>
<tr><td class="paramname">vectors</td><td>array of vectors containing data to send </td></tr>
<tr><td class="paramname">vectorcnt</td><td>number of vectors in the array </td></tr>
<tr><td class="paramname">apiflags</td><td>combination of following flags :<ul>
<li>NETCONN_COPY: data will be copied into memory belonging to the stack</li>
<li>NETCONN_MORE: for TCP connection, PSH flag will be set on last segment sent</li>
<li>NETCONN_DONTBLOCK: only write the data if all data can be written at once </li>
</ul>
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<tr><td class="paramname">bytes_written</td><td>pointer to a location that receives the number of written bytes </td></tr>
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<dl class="section return"><dt>Returns</dt><dd>ERR_OK if data was sent, any other err_t on error </dd></dl>
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