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Code Editor : refiaddr.html

<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>ne_iaddr_make</title><link rel="stylesheet" type="text/css" href="../manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="neon HTTP/WebDAV client library"><link rel="up" href="ref.html" title="neon API reference"><link rel="prev" href="refi18n.html" title="ne_i18n_init"><link rel="next" href="refalloc.html" title="ne_malloc"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">ne_iaddr_make</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="refi18n.html">Prev</a> </td><th width="60%" align="center">neon API reference</th><td width="20%" align="right"> <a accesskey="n" href="refalloc.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="refiaddr"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ne_iaddr_make, ne_iaddr_cmp, ne_iaddr_print, ne_iaddr_typeof, ne_iaddr_parse, ne_iaddr_raw, ne_iaddr_reverse, ne_iaddr_free — functions to manipulate network addresses</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include &lt;ne_socket.h&gt;

typedef enum {
    ne_iaddr_ipv4 = 0,
    ne_iaddr_ipv6
} <em class="type">ne_iaddr_type</em>;</pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">ne_inet_addr *<b class="fsfunc">ne_iaddr_make</b>(</code></td><td>ne_iaddr_type <var class="pdparam">type</var>, </td></tr><tr><td> </td><td>const unsigned char *<var class="pdparam">raw</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">ne_iaddr_cmp</b>(</code></td><td>const ne_inet_addr *<var class="pdparam">ia1</var>, </td></tr><tr><td> </td><td>const ne_inet_addr *<var class="pdparam">ia2</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">char *<b class="fsfunc">ne_iaddr_print</b>(</code></td><td>const ne_inet_addr *<var class="pdparam">ia</var>, </td></tr><tr><td> </td><td>char *<var class="pdparam">buffer</var>, </td></tr><tr><td> </td><td>size_t <var class="pdparam">bufsiz</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">ne_iaddr_type <b class="fsfunc">ne_iaddr_typeof</b>(</code></td><td>const ne_inet_addr *<var class="pdparam">ia</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">ne_inet_addr *<b class="fsfunc">ne_iaddr_parse</b>(</code></td><td>const char *<var class="pdparam">address</var>, </td></tr><tr><td> </td><td>ne_iaddr_type <var class="pdparam">type</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">unsigned char *<b class="fsfunc">ne_iaddr_raw</b>(</code></td><td>const ne_inet_addr *<var class="pdparam">ia</var>, </td></tr><tr><td> </td><td>unsigned char *<var class="pdparam">buffer</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">ne_iaddr_reverse</b>(</code></td><td>const ne_inet_addr *<var class="pdparam">ia</var>, </td></tr><tr><td> </td><td>char *<var class="pdparam">buffer</var>, </td></tr><tr><td> </td><td>size_t <var class="pdparam">buflen</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">ne_iaddr_free</b>(</code></td><td>const ne_inet_addr *<var class="pdparam">ia</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idm140368850673184"></a><h2>Description</h2><p><code class="function">ne_iaddr_make</code> creates an
    <em class="type">ne_inet_addr</em> object from a raw binary network
    address; for instance the four bytes <code class="literal">0x7f 0x00 0x00
    0x01</code> represent the IPv4 address
    <code class="literal">127.0.0.1</code>.  The object returned is suitable for
    passing to <code class="function">ne_sock_connect</code>.  A binary IPv4
    address contains four bytes; a binary IPv6 address contains
    sixteen bytes; addresses passed must be in network byte
    order.</p><p><code class="function">ne_iaddr_cmp</code> compares two network
    address objects; returning zero only if they are identical.  The
    objects need not have the same address type; if the addresses are
    not of the same type, the return value is guaranteed to be
    non-zero.</p><p><code class="function">ne_iaddr_print</code> prints a human-readable
    string representation of a network address into a buffer, for
    instance the string <code class="literal">"127.0.0.1"</code>.</p><p><code class="function">ne_iaddr_typeof</code> returns the type of the
    given network address object.</p><p><code class="function">ne_iaddr_parse</code> parses a string
    representation of a network address (such as
    <code class="literal">"127.0.0.1"</code> and creates a network address
    object to represent the parsed address.</p><p><code class="function">ne_iaddr_raw</code> writes the raw byte
    representation of a network address to the provided buffer.  The
    bytes are written in network byte order; the buffer must be of
    suitable length for the type of address (4 bytes for an IPv4
    address, 16 bytes for an IPv6 address).</p><p><code class="function">ne_iaddr_reverse</code> performs a reverse
    name lookup on the address object, writing the (first) hostname
    associated with the IP address to the provided buffer.  If the
    hostname is longer than the buffer it will be silently truncated;
    on success the string written to the buffer is always
    <code class="literal">NUL</code>-terminated.</p><p><code class="function">ne_iaddr_free</code> releases the memory
    associated with a network address object.</p></div><div class="refsect1"><a name="idm140368850659840"></a><h2>Return value</h2><p><code class="function">ne_iaddr_make</code> returns <code class="literal">NULL</code> if the
    address type passed is not supported (for instance on a platform
    which does not support IPv6).</p><p><code class="function">ne_iaddr_print</code> returns the
    <code class="parameter">buffer</code> pointer, and never <code class="literal">NULL</code>.</p><p><code class="function">ne_iaddr_parse</code> returns a network
    address object on success, or <code class="literal">NULL</code> on failure to parse the
    <code class="parameter">address</code> parameter.</p><p><code class="function">ne_iaddr_reverse</code> returns zero on
    success or non-zero if no hostname is associated with the
    address.</p><p><code class="function">ne_iaddr_raw</code> returns the
    <code class="parameter">buffer</code> parameter, and never <code class="literal">NULL</code>.</p></div><div class="refsect1"><a name="idm140368850650064"></a><h2>Examples</h2><p>The following example connects a socket to port 80 at the
    address <code class="literal">127.0.0.1</code>.</p><pre class="programlisting">unsigned char addr[] = "\0x7f\0x00\0x00\0x01";
ne_inet_addr *ia;

ia = ne_iaddr_make(ne_iaddr_ipv4, addr);
if (ia != NULL) {
    ne_socket *sock = ne_sock_connect(ia, 80);
    ne_iaddr_free(ia);
    /* ... */
} else {
    /* ... */
}</pre></div><div class="refsect1"><a name="idm140368850647328"></a><h2>See also</h2><p><a class="xref" href="refresolve.html#ne_addr_resolve">ne_addr_resolve</a></p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="refi18n.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ref.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="refalloc.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">ne_i18n_init </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> ne_malloc</td></tr></table></div></body></html>

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Code Editor : refiaddr.html