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When this option is enabled, checksum is checked for all received UDP packets to check for transmission errors. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00140">140</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="bootp_8c-source.html#l00108">bootpc_init()</a>, <a class="el" href="dhcpc_8c-source.html#l00158">dhcpc_init()</a>, <a class="el" href="dns_8c-source.html#l00108">dns_init()</a>, <a class="el" href="udp_8c-source.html#l00550">process_udp_in()</a>, <a class="el" href="tftps_8c-source.html#l00136">tftps_init()</a>, <a class="el" href="udp_8c-source.html#l00175">udp_getsocket()</a>, <a class="el" href="udp_8c-source.html#l00118">udp_init()</a>, and <a class="el" href="udp_8c-source.html#l00244">udp_releasesocket()</a>.    </td>
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<a name="a8" doxytag="tcp_ip.h::UDP_HLEN"></a><p>
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          <td class="md" nowrap valign="top"> #define UDP_HLEN&nbsp;&nbsp;&nbsp;8
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UDP Header Length 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00144">144</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="udp_8c-source.html#l00550">process_udp_in()</a>, and <a class="el" href="udp_8c-source.html#l00395">udp_send()</a>.    </td>
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<a name="a18" doxytag="tcp_ip.h::TCP_TOS_NORMAL"></a><p>
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          <td class="md" nowrap valign="top"> #define TCP_TOS_NORMAL&nbsp;&nbsp;&nbsp;0
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This defines normal (and for now the only one implemented) type of service for the TCP socket. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00214">214</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="http__server_8c-source.html#l00093">https_init()</a>, <a class="el" href="pop3__client_8c-source.html#l00148">pop3c_init()</a>, and <a class="el" href="smtp__client_8c-source.html#l00155">smtpc_init()</a>.    </td>
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<a name="a28" doxytag="tcp_ip.h::UDP_STATE_FREE"></a><p>
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          <td class="md" nowrap valign="top"> #define UDP_STATE_FREE&nbsp;&nbsp;&nbsp;1
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If an entry of ucb type has this as a state value, then it is free and can be allocated by the <a class="el" href="group__udp__app__api.html#a0">udp_getsocket()</a>. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00249">249</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="udp_8c-source.html#l00175">udp_getsocket()</a>, <a class="el" href="udp_8c-source.html#l00118">udp_init()</a>, and <a class="el" href="udp_8c-source.html#l00244">udp_releasesocket()</a>.    </td>
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<a name="a29" doxytag="tcp_ip.h::UDP_STATE_CLOSED"></a><p>
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          <td class="md" nowrap valign="top"> #define UDP_STATE_CLOSED&nbsp;&nbsp;&nbsp;2
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Entries of ucb type that have this as their state value were allocated by <a class="el" href="group__udp__app__api.html#a0">udp_getsocket()</a> but they are in the closed state, so no data can be received/sent through the socket. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00258">258</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="udp_8c-source.html#l00340">udp_close()</a>, <a class="el" href="udp_8c-source.html#l00684">udp_getfreeport()</a>, and <a class="el" href="udp_8c-source.html#l00175">udp_getsocket()</a>.    </td>
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<a name="a30" doxytag="tcp_ip.h::UDP_STATE_OPENED"></a><p>
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          <td class="md" nowrap valign="top"> #define UDP_STATE_OPENED&nbsp;&nbsp;&nbsp;3
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Corresponding UDP socket was allocated and opened so data can be transmitted/received through it. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00266">266</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="udp_8c-source.html#l00550">process_udp_in()</a>, <a class="el" href="udp_8c-source.html#l00291">udp_open()</a>, and <a class="el" href="udp_8c-source.html#l00395">udp_send()</a>.    </td>
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<a name="a31" doxytag="tcp_ip.h::UDP_EVENT_DATA"></a><p>
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          <td class="md" nowrap valign="top"> #define UDP_EVENT_DATA&nbsp;&nbsp;&nbsp;64
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For now, this is the only UDP event that is notified to the UDP sockets' event listener. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00276">276</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="dhcpc_8c-source.html#l00568">dhcpc_eventlistener()</a>, <a class="el" href="dns_8c-source.html#l00205">dns_eventlistener()</a>, and <a class="el" href="udp_8c-source.html#l00550">process_udp_in()</a>.    </td>
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<a name="a38" doxytag="tcp_ip.h::TCP_TYPE_NONE"></a><p>
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          <td class="md" nowrap valign="top"> #define TCP_TYPE_NONE&nbsp;&nbsp;&nbsp;0x00
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If TCP socket entry is of this type it can not be used for anything.  This may only be used for testing, debugging, etc. purposes or if  application is not sure what it wants to be it can reserve a TCP  socket by getting a socket of type TCP_TYPE_NONE. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00300">300</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="tcp_8c-source.html#l00155">tcp_getsocket()</a>, <a class="el" href="tcp_8c-source.html#l01154">tcp_init()</a>, and <a class="el" href="tcp_8c-source.html#l00228">tcp_releasesocket()</a>.    </td>
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<a name="a39" doxytag="tcp_ip.h::TCP_TYPE_SERVER"></a><p>
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          <td class="md" nowrap valign="top"> #define TCP_TYPE_SERVER&nbsp;&nbsp;&nbsp;0x01
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If TCP socket entry is of server type, application using it can only listen on a given socket for incoming connections. No connections can be opened towards some outside host unless the outside host initiates the connection. 
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Definition at line <a class="el" href="tcp__ip_8h-source.html#l00310">310</a> of file <a class="el" href="tcp__ip_8h-source.html">tcp_ip.h</a>.
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Referenced by <a class="el" href="http__server_8c-source.html#l00093">https_init()</a>, <a class="el" href="tcp_8c-source.html#l01250">process_tcp_in()</a>, <a class="el" href="tcp_8c-source.html#l00155">tcp_getsocket()</a>, <a class="el" href="tcp_8c-source.html#l00290">tcp_listen()</a>, and <a class="el" href="tcp_8c-source.html#l00808">tcp_poll()</a>.    </td>
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<a name="a40" doxytag="tcp_ip.h::TCP_TYPE_CLIENT"></a><p>
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          <td class="md" nowrap valign="top"> #define TCP_TYPE_CLIENT&nbsp;&nbsp;&nbsp;0x02
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