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| author | Laurent Bercot <ska-skaware@skarnet.org> | 2015-01-07 19:01:26 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska-skaware@skarnet.org> | 2015-01-07 19:01:26 +0000 |
| commit | e9be34c9b798141dd6c224cf33934904935c49b2 (patch) | |
| tree | 969c243f85ef02d88bc4f54d9ab14cd323b7e9aa /doc/s6-tcpserver4-socketbinder.html | |
| parent | e3aeb3b63b9996bd06c20861e1dac1c9421d9312 (diff) | |
| download | s6-networking-e9be34c9b798141dd6c224cf33934904935c49b2.tar.xz | |
Complete conversion of s6-ipcserver and s6-tcpserver (4 and 6)
to socketbinder + d model. With documentation (!)
Diffstat (limited to 'doc/s6-tcpserver4-socketbinder.html')
| -rw-r--r-- | doc/s6-tcpserver4-socketbinder.html | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/doc/s6-tcpserver4-socketbinder.html b/doc/s6-tcpserver4-socketbinder.html new file mode 100644 index 0000000..5cbbb07 --- /dev/null +++ b/doc/s6-tcpserver4-socketbinder.html @@ -0,0 +1,70 @@ +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <title>s6-networking: the s6-tcpserver4-socketbinder program</title> + <meta name="Description" content="s6-networking: the s6-tcpserver4-socketbinder program" /> + <meta name="Keywords" content="s6-networking s6-tcpserver4-socketbinder tcpserver ucspi inet ipv4 socket bind listen" /> + <!-- <link rel="stylesheet" type="text/css" href="http://skarnet.org/default.css" /> --> + </head> +<body> + +<p> +<a href="index.html">s6-networking</a><br /> +<a href="http://skarnet.org/software/">Software</a><br /> +<a href="http://skarnet.org/">skarnet.org</a> +</p> + +<h1> The <tt>s6-tcpserver4-socketbinder</tt> program </h1> + +<p> +<tt>s6-tcpserver4-socketbinder</tt> binds an INET domain +socket to an IPv4 address and port, then executes a program. +</p> + +<h2> Interface </h2> + +<pre> + s6-tcpserver4-socketbinder [ -d | -D ] [ -b <em>backlog</em> ] <em>ip</em> <em>port</em> <em>prog...</em> +</pre> + +<ul> + <li> s6-tcpserver4-socketbinder creates an TCP socket +and binds it to IPv4 address <em>ip</em>, port <em>port</em>. +It prepares the socket to accept connections by calling +<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/listen.html">listen()</a>. </li> + <li> It then execs into <em>prog...</em> with the open socket +as its standard input. </li> + +<h2> Options </h2> + +<ul> + <li> <tt>-d</tt> : allow instant rebinding to the same IP and port +even if it has been used not long ago - this is the SO_REUSEADDR flag to +<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/setsockopt.html">setsockopt()</a> +and is generally used with server programs. This is the default. </li> + <li> <tt>-D</tt> : disallow instant rebinding to the same path. </li> + <li> <tt>-b <em>backlog</em></tt> : set a maximum of +<em>backlog</em> backlog connections on the socket. Extra +connection attempts will rejected by the kernel. </li> +</ul> + +<h2> Notes </h2> + +<ul> + <li> s6-tcpserver4-socketbinder is part of a set of basic blocks used to +build a flexible TCP/IPv4 super-server. It normally should be given a +command line crafted to make it execute into +<a href="s6-tcpserver4d.html">s6-tcpserver4d</a> to accept connections +from clients, or into a program such as +<a href="http://skarnet.org/software/s6/s6-applyuidgid.html">s6-applyuidgid</a> +to drop privileges before doing so. </li> + <li> The <a href="s6-tcpserver4.html">s6-tcpserver4</a> program does +exactly this. It implements +a full TCP/IPv4 super-server by building a command line starting with +s6-tcpserver4-socketbinder and ending with s6-tcpserver4d followed by the +application program, and executing into it. </li> +</ul> + +</body> +</html> |