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authorRaimo Niskanen <[email protected]>2016-06-08 14:46:44 +0200
committerRaimo Niskanen <[email protected]>2016-06-09 08:48:35 +0200
commit16e895198a541ccbbbe6c970bd9572cf347a9c77 (patch)
treef5dc043fd49796f454eae52cc61ba91036826b93 /lib/kernel/doc/src
parentf429adba7e7a862b9949821b40aa3cba12455b3e (diff)
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Document the local (unix) address family
Diffstat (limited to 'lib/kernel/doc/src')
-rw-r--r--lib/kernel/doc/src/gen_tcp.xml21
-rw-r--r--lib/kernel/doc/src/gen_udp.xml19
-rw-r--r--lib/kernel/doc/src/inet.xml53
3 files changed, 75 insertions, 18 deletions
diff --git a/lib/kernel/doc/src/gen_tcp.xml b/lib/kernel/doc/src/gen_tcp.xml
index b75d42d198..88135ea43d 100644
--- a/lib/kernel/doc/src/gen_tcp.xml
+++ b/lib/kernel/doc/src/gen_tcp.xml
@@ -153,17 +153,17 @@ do_recv(Sock, Bs) ->
<c><anno>Address</anno></c> can be a hostname or an IP address.</p>
<p>The following options are available:</p>
<taglist>
- <tag><c>{ip, ip_address()}</c></tag>
+ <tag><c>{ip, Address}</c></tag>
<item><p>If the host has many 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 many
+ <tag><c>{ifaddr, Address}</c></tag>
+ <item><p>Same as <c>{ip, Address}</c>. If the host has many
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. If <c>{ip, ip_address()}</c> and/or
+ for it. If <c>{ip, Address}</c> and/or
<c>{port, port_number()}</c> is combined with this option, the
<c>fd</c> is bound to the specified interface and port before
connecting. If these options are not specified, it is assumed that
@@ -175,9 +175,10 @@ do_recv(Sock, Bs) ->
<tag><c>local</c></tag>
<item>
<p>
- Sets up the socket for local address family. This option is only
- valid together with <c>{fd, integer()}</c> when the file descriptor
- is of local address family (e.g. a Unix Domain Socket)
+ Sets up a Unix Domain Socket. See
+ <seealso marker="inet#type-local_address">
+ <c>inet:local_address()</c>
+ </seealso>
</p>
</item>
<tag><c>{port, Port}</c></tag>
@@ -254,7 +255,7 @@ do_recv(Sock, Bs) ->
<item><p><c>B</c> is an integer &gt;= <c>0</c>. The backlog value
defines the maximum length that the queue of pending connections
can grow to. Defaults to <c>5</c>.</p></item>
- <tag><c>{ip, ip_address()}</c></tag>
+ <tag><c>{ip, Address}</c></tag>
<item><p>If the host has many network interfaces, this option
specifies which one to listen on.</p></item>
<tag><c>{port, Port}</c></tag>
@@ -263,8 +264,8 @@ do_recv(Sock, Bs) ->
<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>{ifaddr, ip_address()}</c></tag>
- <item><p>Same as <c>{ip, ip_address()}</c>. If the host has many
+ <tag><c>{ifaddr, Address}</c></tag>
+ <item><p>Same as <c>{ip, Address}</c>. If the host has many
network interfaces, this option specifies which one to use.</p>
</item>
<tag><c>inet6</c></tag>
diff --git a/lib/kernel/doc/src/gen_udp.xml b/lib/kernel/doc/src/gen_udp.xml
index ca9d9c978c..3f88a0272d 100644
--- a/lib/kernel/doc/src/gen_udp.xml
+++ b/lib/kernel/doc/src/gen_udp.xml
@@ -85,11 +85,11 @@
<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, Address}</c></tag>
<item><p>If the host has many 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 many
+ <tag><c>{ifaddr, Address}</c></tag>
+ <item><p>Same as <c>{ip, Address}</c>. If the host has many
network interfaces, this option specifies which one to
use.</p></item>
<tag><c>{fd, integer() >= 0}</c></tag>
@@ -107,9 +107,10 @@
<tag><c>local</c></tag>
<item>
<p>
- Sets up the socket for local address family. This option is only
- valid together with <c>{fd, integer()}</c> when the file descriptor
- is of local address family (e.g. a Unix Domain Socket)
+ Sets up a Unix Domain Socket. See
+ <seealso marker="inet#type-local_address">
+ <c>inet:local_address()</c>
+ </seealso>
</p>
</item>
<tag><c>{udp_module, module()}</c></tag>
@@ -184,8 +185,10 @@
<name name="send" arity="4"/>
<fsummary>Send a packet.</fsummary>
<desc>
- <p>Sends a packet to the specified address and port. Argument
- <c><anno>Address</anno></c> can be a hostname or an IP address.</p>
+ <p>
+ Sends a packet to the specified address and port. Argument
+ <c><anno>Address</anno></c> can be a hostname or a socket address.
+ </p>
</desc>
</func>
</funcs>
diff --git a/lib/kernel/doc/src/inet.xml b/lib/kernel/doc/src/inet.xml
index 5ff167bcb3..c0dce2f50c 100644
--- a/lib/kernel/doc/src/inet.xml
+++ b/lib/kernel/doc/src/inet.xml
@@ -118,6 +118,59 @@ fe80::204:acff:fe17:bf38
<name name="port_number"/>
</datatype>
<datatype>
+ <name name="local_address"/>
+ <desc>
+ <p>
+ This address family only works on Unix-like systems.
+ </p>
+ <p>
+ <c><anno>File</anno></c> is normally a file pathname
+ in a local filesystem. It is limited in length by the
+ operating system, traditionally to 108 bytes.
+ </p>
+ <p>
+ A <c>binary()</c> is passed as is to the operating system,
+ but a <c>string()</c> is encoded according to the
+ <seealso marker="file#native_name_encoding/0">
+ system filename encoding mode.
+ </seealso>
+ </p>
+ <p>
+ Other addresses are possible, for example Linux implements
+ "Abstract Addresses". See the documentation for
+ Unix Domain Sockets on your system,
+ normally <c>unix</c> in manual section 7.
+ </p>
+ <p>
+ In most API functions where you can use
+ this address family the port number must be <c>0</c>.
+ </p>
+ </desc>
+ </datatype>
+ <datatype>
+ <name name="socket_address"/>
+ </datatype>
+ <datatype>
+ <name name="returned_non_ip_address"/>
+ <desc>
+ <p>
+ Addresses besides
+ <seealso marker="#type-ip_address">
+ <c>ip_address()</c>
+ </seealso>
+ ones that are returned from socket API functions.
+ See in particular
+ <seealso marker="#type-local_address">
+ <c>local_address()</c>.
+ </seealso>
+ The <c>unspec</c> family corresponds to AF_UNSPEC and can
+ occur if the other side has no socket address.
+ The <c>undefined</c> family can only occur in the unlikely
+ event of an address family that the VM does not recognize.
+ </p>
+ </desc>
+ </datatype>
+ <datatype>
<name name="posix"/>
<desc>
<p>An atom that is named from the POSIX error codes used in Unix,