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Added support for arbitrary datagram sizes.

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The maximum size is still constant per UDP object, but the
size can be speficied at creation time.
This commit is contained in:
Diego Nehab 2015-10-05 11:47:51 +08:00
parent d1ec29be7f
commit fd729b32a8
3 changed files with 68 additions and 29 deletions
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34
doc/udp.html
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@ -42,7 +42,7 @@
<!-- socket.udp ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<p class="name" id="socket.udp">
socket.<b>udp()</b>
socket.<b>udp(</b>[buffersize]<b>)</b>
</p>
<p class="description">
@ -62,6 +62,13 @@ The <a href="#setpeername"><tt>setpeername</tt></a>
is used to connect the object.
</p>
<p class="parameters">
The optional <tt>buffersize</tt> parameter
specifies the size of the largest datagram that will
ever be received by the UDP object. The default value is
8192.
</p>
<p class="return">
In case of success, a new unconnected UDP object
returned. In case of error, <b><tt>nil</tt></b> is returned, followed by
@ -85,7 +92,7 @@ href=#setoption><tt>setoption</tt></a> will fail.
<!-- socket.udp4 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<p class="name" id="socket.udp">
socket.<b>udp4()</b>
socket.<b>udp4(</b>[buffersize]<b>)</b>
</p>
<p class="description">
@ -105,6 +112,13 @@ The <a href="#setpeername"><tt>setpeername</tt></a>
is used to connect the object.
</p>
<p class="parameters">
The optional <tt>buffersize</tt> parameter
specifies the size of the largest datagram that will
ever be received by the UDP object. The default value is
8192.
</p>
<p class="return">
In case of success, a new unconnected UDP object
returned. In case of error, <b><tt>nil</tt></b> is returned, followed by
@ -114,7 +128,7 @@ an error message.
<!-- socket.udp ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
<p class="name" id="socket.udp6">
socket.<b>udp6()</b>
socket.<b>udp6(</b>[buffersize]<b>)</b>
</p>
<p class="description">
@ -134,6 +148,13 @@ The <a href="#setpeername"><tt>setpeername</tt></a>
is used to connect the object.
</p>
<p class="parameters">
The optional <tt>buffersize</tt> parameter
specifies the size of the largest datagram that will
ever be received by the UDP object. The default value is
8192.
</p>
<p class="return">
In case of success, a new unconnected UDP object
returned. In case of error, <b><tt>nil</tt></b> is returned, followed by
@ -238,9 +259,10 @@ specifies the maximum size of the datagram to be retrieved. If
there are more than <tt>size</tt> bytes available in the datagram,
the excess bytes are discarded. If there are less then
<tt>size</tt> bytes available in the current datagram, the
available bytes are returned. If <tt>size</tt> is omitted, the
maximum datagram size is used (which is currently limited by the
implementation to 8192 bytes).
available bytes are returned.
If <tt>size</tt> is omitted, the
<tt>buffersize</tt> argument at creation time is used
(which defaults to 8192 bytes).
</p>
<p class="return">