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Merge branch 'egil/inet-document-options/OTP-10053' into maint

* egil/inet-document-options/OTP-10053:
  kernel: Document ifaddr option
  kernel: Document tcp-, udp- and sctp_module option
  kernel: Remove bit8 option in spec
  kernel: Document bit8 option in inet:setopts/2
  kernel: Initial doc of forgotten inet options
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psyeugenic committed Apr 16, 2012
2 parents 8614542 + 57c50be commit f1a49c45e4b2ec746407fd777ba31fec6cab118e
@@ -530,19 +530,8 @@
SCTP data interleaved with other inter-process messages.</p>
</item>
</list>
- <marker id="option-buffer"></marker>
</item>
- <tag><c>{buffer, integer()}</c></tag>
- <item>
- <p>Determines the size of the user-level software buffer used by
- the SCTP driver. Not to be confused with <c>sndbuf</c>
- and <c>recbuf</c> options which correspond to
- the kernel socket buffers. It is recommended
- to have <c>val(buffer) &gt;= max(val(sndbuf),val(recbuf))</c>.
- In fact, the <c>val(buffer)</c> is automatically set to
- the above maximum when <c>sndbuf</c> or <c>recbuf</c> values are set.</p>
- </item>
- <tag><c>{tos, integer()}</c></tag>
+ <tag><c>{tos, integer()}</c></tag>
<item>
<p>Sets the Type-Of-Service field on the IP datagrams being sent,
to the given value, which effectively determines a prioritization
@@ -567,19 +556,8 @@
<c>{IP,Port}</c> of the socket can be re-used immediately:
no waiting in the CLOSE_WAIT state is performed (may be
required for high-throughput servers).</p>
- <marker id="option-linger"></marker>
- </item>
- <tag><c>{linger, {true|false, integer()}</c></tag>
- <item>
- <p>Determines the timeout in seconds for flushing unsent data in the
- <c>gen_sctp:close/1</c> socket call. If the 1st component of the value
- tuple is <c>false</c>, the 2nd one is ignored, which means that
- <c>gen_sctp:close/1</c> returns immediately not waiting
- for data to be flushed. Otherwise, the 2nd component is
- the flushing time-out in seconds.</p>
- <marker id="option-sndbuf"></marker>
</item>
- <tag><c>{sndbuf, integer()}</c></tag>
+ <tag><c>{sndbuf, integer()}</c></tag>
<item>
<p>The size, in bytes, of the *kernel* send buffer for this socket.
Sending errors would occur for datagrams larger than
@@ -593,6 +571,15 @@
<c>val(sndbuf)</c>. Setting this option also adjusts
the size of the driver buffer (see <c>buffer</c> above).</p>
</item>
+
+ <tag><c>{sctp_module, module()}</c></tag>
+ <item> <p>
+ Override which callback module used. Defaults to
+ <c>inet_sctp</c> for IPv4 and <c>inet6_sctp</c> for IPv6.
+ </p>
+ </item>
+
+
<tag><c>{sctp_rtoinfo, #sctp_rtoinfo{}}</c></tag>
<item>
<pre> #sctp_rtoinfo{
@@ -96,37 +96,47 @@ do_recv(Sock, Bs) ->
can be either a hostname, or an IP address.</p>
<p>The available options are:</p>
<taglist>
- <tag><c>list</c></tag>
- <item>
- <p>Received <c>Packet</c> is delivered as a list.</p>
- </item>
- <tag><c>binary</c></tag>
- <item>
- <p>Received <c>Packet</c> is delivered as a binary.</p>
- </item>
- <tag><c>{ip, ip_address()}</c></tag>
+ <tag><c>{ip, ip_address()}</c></tag>
<item>
<p>If the host has several network interfaces, this option
specifies which one to use.</p>
</item>
- <tag><c>{port, Port}</c></tag>
+
+ <tag><c>{ifaddr, ip_address()}</c></tag>
<item>
- <p>Specify which local port number to use.</p>
- </item>
+ <p>Same as <c>{ip, ip_address()}</c>. If the host has several network interfaces, this option
+ specifies which one to use.</p>
+ </item>
+
<tag><c>{fd, integer() >= 0}</c></tag>
<item>
<p>If a socket has somehow been connected without using
<c>gen_tcp</c>, use this option to pass the file
descriptor for it.</p>
</item>
- <tag><c>inet6</c></tag>
+
+ <tag><c>inet</c></tag>
<item>
+ <p>Set up the socket for IPv4.</p>
+ </item>
+
+ <tag><c>inet6</c></tag>
+ <item>
<p>Set up the socket for IPv6.</p>
</item>
- <tag><c>inet</c></tag>
+
+ <tag><c>{port, Port}</c></tag>
<item>
- <p>Set up the socket for IPv4.</p>
+ <p>Specify which local port number to use.</p>
</item>
+
+ <tag><c>{tcp_module, module()}</c></tag>
+ <item> <p>
+ Override which callback module used. Defaults to
+ <c>inet_tcp</c> for IPv4 and <c>inet6_tcp</c> for IPv6.
+ </p>
+ </item>
+
<tag><c>Opt</c></tag>
<item>
<p>See
@@ -197,6 +207,13 @@ do_recv(Sock, Bs) ->
<c>gen_tcp</c>, use this option to pass the file
descriptor for it.</p>
</item>
+
+ <tag><c>{ifaddr, ip_address()}</c></tag>
+ <item>
+ <p>Same as <c>{ip, ip_address()}</c>. If the host has several network interfaces, this option
+ specifies which one to use.</p>
+ </item>
+
<tag><c>inet6</c></tag>
<item>
<p>Set up the socket for IPv6.</p>
@@ -205,6 +222,14 @@ do_recv(Sock, Bs) ->
<item>
<p>Set up the socket for IPv4.</p>
</item>
+
+ <tag><c>{tcp_module, module()}</c></tag>
+ <item> <p>
+ Override which callback module used. Defaults to
+ <c>inet_tcp</c> for IPv4 and <c>inet6_tcp</c> for IPv6.
+ </p>
+ </item>
+
<tag><c>Opt</c></tag>
<item>
<p>See
@@ -72,6 +72,14 @@
<p>If the host has several network interfaces, this option
specifies which one to use.</p>
</item>
+
+ <tag><c>{ifaddr, ip_address()}</c></tag>
+ <item>
+ <p>Same as <c>{ip, ip_address()}</c>. If the host has several network interfaces, this option
+ specifies which one to use.</p>
+ </item>
+
+
<tag><c>{fd, integer() >= 0}</c></tag>
<item>
<p>If a socket has somehow been opened without using
@@ -86,6 +94,51 @@
<item>
<p>Set up the socket for IPv4.</p>
</item>
+
+ <tag><c>{udp_module, module()}</c></tag>
+ <item> <p>
+ Override which callback module used. Defaults to
+ <c>inet_udp</c> for IPv4 and <c>inet6_udp</c> for IPv6.
+ </p>
+ </item>
+
+ <tag><c>{multicast_if, Address}</c></tag>
+ <item>
+ <p>Set the local device for a multicast socket.</p>
+ </item>
+
+ <tag><c>{multicast_loop, true | false}</c></tag>
+ <item>
+ <p>
+ When <c>true</c> sent multicast packets will be looped back to the local
+ sockets.
+ </p>
+ </item>
+
+ <tag><c>{multicast_ttl, Integer}</c></tag>
+ <item>
+ <p>
+ The <c>multicast_ttl</c> option changes the time-to-live (TTL) for
+ outgoing multicast datagrams in order to control the scope of the
+ multicasts.
+ </p>
+ <p>
+ Datagrams with a TTL of 1 are not forwarded beyond the local
+ network.
+ <br />Default: 1
+ </p>
+ </item>
+
+ <tag><c>{add_membership, {MultiAddress, InterfaceAddress}}</c></tag>
+ <item>
+ <p>Join a multicast group. </p>
+ </item>
+
+ <tag><c>{drop_membership, {MultiAddress, InterfaceAddress}}</c></tag>
+ <item>
+ <p>Leave multicast group.</p>
+ </item>
+
<tag><c>Opt</c></tag>
<item>
<p>See
@@ -445,10 +445,33 @@ fe80::204:acff:fe17:bf38
flow control; the other side will not be able send
faster than the receiver can read.</p>
</item>
+
+ <tag><c>{bit8, clear | set | on | off}</c></tag>
+ <item>
+ <p>
+ Scans every byte in received data-packets and checks if the 8 bit
+ is set in any of them. Information is retrieved with
+ <c>inet:getopts/2</c>.
+ <note>Deprecated! Will be removed in Erlang/OTP R16.</note>
+ </p>
+ </item>
+
<tag><c>{broadcast, Boolean}</c>(UDP sockets)</tag>
<item>
<p>Enable/disable permission to send broadcasts.</p>
</item>
+
+ <tag><c>{buffer, Size}</c></tag>
+ <item>
+ <p>Determines the size of the user-level software buffer used by
+ the driver. Not to be confused with <c>sndbuf</c>
+ and <c>recbuf</c> options which correspond to
+ the kernel socket buffers. It is recommended
+ to have <c>val(buffer) &gt;= max(val(sndbuf),val(recbuf))</c>.
+ In fact, the <c>val(buffer)</c> is automatically set to
+ the above maximum when <c>sndbuf</c> or <c>recbuf</c> values are set.</p>
+ </item>
+
<tag><c>{delay_send, Boolean}</c></tag>
<item>
<p>Normally, when an Erlang process sends to a socket,
@@ -463,10 +486,19 @@ fe80::204:acff:fe17:bf38
real property of the socket. Needless to say it is an
implementation specific option. Default is <c>false</c>.</p>
</item>
+
+ <tag><c>{deliver, port | term}</c></tag>
+ <item> <p> When <c>{active, true}</c> delivers data on the forms
+ <c>port</c> : <c>{S, {data, [H1,..Hsz | Data]}}</c> or
+ <c>term</c> : <c>{tcp, S, [H1..Hsz | Data]}</c>.
+ </p>
+ </item>
+
<tag><c>{dontroute, Boolean}</c></tag>
<item>
<p>Enable/disable routing bypass for outgoing messages.</p>
</item>
+
<tag><c>{exit_on_close, Boolean}</c></tag>
<item>
<p>By default this option is set to <c>true</c>.</p>
@@ -476,6 +508,7 @@ fe80::204:acff:fe17:bf38
<seealso marker="gen_tcp#shutdown/2">gen_tcp:shutdown/2</seealso>
to shutdown the write side.</p>
</item>
+
<tag><c>{header, Size}</c></tag>
<item>
<p>This option is only meaningful if the <c>binary</c>
@@ -487,6 +520,15 @@ fe80::204:acff:fe17:bf38
example <c>Size == 2</c>, the data received will match
<c>[Byte1,Byte2|Binary]</c>.</p>
</item>
+
+ <tag><c>{high_watermark, Size}</c></tag>
+ <item> <p>
+ Sender is forced busy if sent and equeued data
+ readched the highwater mark.
+ <br /> Default: 8192 kB.
+ </p>
+ </item>
+
<tag><c>{keepalive, Boolean}</c>(TCP/IP sockets)</tag>
<item>
<p>Enables/disables periodic transmission on a connected
@@ -495,6 +537,41 @@ fe80::204:acff:fe17:bf38
considered broken and an error message will be sent to
the controlling process. Default disabled.</p>
</item>
+
+ <tag><c>{linger, {true|false, Seconds}}</c></tag>
+ <item>
+ <p>Determines the timeout in seconds for flushing unsent data in the
+ <c>close/1</c> socket call. If the 1st component of the value
+ tuple is <c>false</c>, the 2nd one is ignored, which means that
+ <c>close/1</c> returns immediately not waiting
+ for data to be flushed. Otherwise, the 2nd component is
+ the flushing time-out in seconds.</p>
+ </item>
+
+ <tag><c>{low_watermark, Size}</c></tag>
+ <item> <p>
+ If the port has reached its <c>high_watermark</c> it will
+ force busy onto senders. When the port data queue reaches the
+ <c>low_watermark</c> callers are no longer forced busy.
+ <br /> Default: 4096 kB.
+ </p>
+ </item>
+
+ <tag><c>{mode, Mode :: binary | list}</c></tag>
+ <item>
+ <p>Received <c>Packet</c> is delivered as defined by Mode.</p>
+ </item>
+
+ <tag><c>list</c></tag>
+ <item>
+ <p>Received <c>Packet</c> is delivered as a list.</p>
+ </item>
+
+ <tag><c>binary</c></tag>
+ <item>
+ <p>Received <c>Packet</c> is delivered as a binary.</p>
+ </item>
+
<tag><c>{nodelay, Boolean}</c>(TCP/IP sockets)</tag>
<item>
<p>If <c>Boolean == true</c>, the <c>TCP_NODELAY</c> option
@@ -578,6 +655,16 @@ fe80::204:acff:fe17:bf38
indicated length are accepted and not considered invalid due
to internal buffer limitations.</p>
</item>
+
+ <tag><c>{priority, Priority}</c></tag>
+ <item> <p>Set the protocol-defined priority for all packets to be sent
+ on this socket.</p>
+ </item>
+
+ <tag><c>{raw, Protocol, OptionNum, ValueBin}</c></tag>
+ <item> <p>See below.</p>
+ </item>
+
<tag><c>{read_packets, Integer}</c>(UDP sockets)</tag>
<item>
<p>Sets the max number of UDP packets to read without
@@ -589,7 +676,7 @@ fe80::204:acff:fe17:bf38
high the system can become unresponsive due to
UDP packet flooding.</p>
</item>
- <tag><c>{recbuf, Integer}</c></tag>
+ <tag><c>{recbuf, Size}</c></tag>
<item>
<p>Gives the size of the receive buffer to use for
the socket.</p>
@@ -620,7 +707,7 @@ fe80::204:acff:fe17:bf38
Default is <c>false</c> due to backward compatibility.</p>
</item>
- <tag><c>{sndbuf, Integer}</c></tag>
+ <tag><c>{sndbuf, Size}</c></tag>
<item>
<p>Gives the size of the send buffer to use for the socket.</p>
</item>
@@ -639,6 +726,7 @@ fe80::204:acff:fe17:bf38
not implemented. Use with caution.</p>
</item>
</taglist>
+
<p>In addition to the options mentioned above, <em>raw</em>
option specifications can be used. The raw options are
specified as a tuple of arity four, beginning with the tag
@@ -31,7 +31,6 @@
-type option() ::
{active, true | false | once} |
- {bit8, clear | set | on | off} |
{buffer, non_neg_integer()} |
{delay_send, boolean()} |
{deliver, port | term} |
@@ -61,7 +60,6 @@
{tos, non_neg_integer()}.
-type option_name() ::
active |
- bit8 |
buffer |
delay_send |
deliver |

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