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205 lines
13 KiB
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Create an Internet or Unix domain server socket</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.stream-socket-server" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">stream_socket_server</h1>
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<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">stream_socket_server</span> — <span class="dc-title">Create an Internet or Unix domain server socket</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.stream-socket-server-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>stream_socket_server</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$local_socket</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter reference">&$errno</code></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$errstr</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$flags</code><span class="initializer"> = STREAM_SERVER_BIND | STREAM_SERVER_LISTEN</span></span>
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[, <span class="methodparam"><span class="type">resource</span> <code class="parameter">$context</code></span>
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]]]] ) : <span class="type">resource</span></div>
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<p class="para rdfs-comment">
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Creates a stream or datagram socket on the specified
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<code class="parameter">local_socket</code>.
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</p>
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<p class="para">
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This function only creates a socket, to begin accepting connections
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use <span class="function"><a href="stream_socket_accept.html" class="function">stream_socket_accept()</a></span>.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.stream-socket-server-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">local_socket</code></dt>
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<dd>
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<p class="para">
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The type of socket created is determined by the transport specified
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using standard URL formatting: <em>transport://target</em>.
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</p>
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<p class="para">
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For Internet Domain sockets (<strong><code>AF_INET</code></strong>) such as TCP and UDP, the
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<em>target</em> portion of the
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<code class="parameter">remote_socket</code> parameter should consist of a
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hostname or IP address followed by a colon and a port number. For
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Unix domain sockets, the <em>target</em> portion should
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point to the socket file on the filesystem.
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</p>
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<p class="para">
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Depending on the environment, Unix domain sockets may not be available.
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A list of available transports can be retrieved using
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<span class="function"><a href="stream_get_transports.html" class="function">stream_get_transports()</a></span>. See
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<a href="transports.html" class="xref">所支持的套接字传输器（Socket Transports）列表</a> for a list of bulitin transports.
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</p>
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</dd>
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<dt>
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<code class="parameter">errno</code></dt>
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<dd>
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<p class="para">
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If the optional <code class="parameter">errno</code> and <code class="parameter">errstr</code>
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arguments are present they will be set to indicate the actual system
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level error that occurred in the system-level <em>socket()</em>,
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<em>bind()</em>, and <em>listen()</em> calls. If
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the value returned in <code class="parameter">errno</code> is
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<em>0</em> and the function returned <strong><code>FALSE</code></strong>, it is an
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indication that the error occurred before the <em>bind()</em>
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call. This is most likely due to a problem initializing the socket.
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Note that the <code class="parameter">errno</code> and
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<code class="parameter">errstr</code> arguments will always be passed by reference.
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</p>
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</dd>
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<dt>
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<code class="parameter">errstr</code></dt>
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<dd>
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<p class="para">
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See <code class="parameter">errno</code> description.
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</p>
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</dd>
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<dt>
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<code class="parameter">flags</code></dt>
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<dd>
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<p class="para">
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A bitmask field which may be set to any combination of socket creation
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flags.
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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For UDP sockets, you must use <strong><code>STREAM_SERVER_BIND</code></strong> as
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the <code class="parameter">flags</code> parameter.
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</p>
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</p></blockquote>
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</dd>
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<dt>
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<code class="parameter">context</code></dt>
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<dd>
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<p class="para">
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.stream-socket-server-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns the created stream, or <strong><code>FALSE</code></strong> on error.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.stream-socket-server-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-4842">
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<p><strong>Example #1 Using TCP server sockets</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$socket </span><span style="color: #007700">= </span><span style="color: #0000BB">stream_socket_server</span><span style="color: #007700">(</span><span style="color: #DD0000">"tcp://0.0.0.0:8000"</span><span style="color: #007700">, </span><span style="color: #0000BB">$errno</span><span style="color: #007700">, </span><span style="color: #0000BB">$errstr</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$socket</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$errstr</span><span style="color: #DD0000"> (</span><span style="color: #0000BB">$errno</span><span style="color: #DD0000">)<br />\n"</span><span style="color: #007700">;<br />} else {<br /> while (</span><span style="color: #0000BB">$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">stream_socket_accept</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">)) {<br /> </span><span style="color: #0000BB">fwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #DD0000">'The local time is ' </span><span style="color: #007700">. </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">'n/j/Y g:i a'</span><span style="color: #007700">) . </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">);<br /> }<br /> </span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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<p class="para">
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The example below shows how to act as a time server which can respond
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to time queries as shown in an example on <span class="function"><a href="stream_socket_client.html" class="function">stream_socket_client()</a></span>.
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<span class="simpara">
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Most systems require root access to create a server socket on a port
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below 1024.
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</span>
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</p></blockquote>
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<div class="example" id="stream-notification-callback.example.basic">
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<p><strong>Example #2 Using UDP server sockets</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$socket </span><span style="color: #007700">= </span><span style="color: #0000BB">stream_socket_server</span><span style="color: #007700">(</span><span style="color: #DD0000">"udp://127.0.0.1:1113"</span><span style="color: #007700">, </span><span style="color: #0000BB">$errno</span><span style="color: #007700">, </span><span style="color: #0000BB">$errstr</span><span style="color: #007700">, </span><span style="color: #0000BB">STREAM_SERVER_BIND</span><span style="color: #007700">);<br />if (!</span><span style="color: #0000BB">$socket</span><span style="color: #007700">) {<br /> die(</span><span style="color: #DD0000">"</span><span style="color: #0000BB">$errstr</span><span style="color: #DD0000"> (</span><span style="color: #0000BB">$errno</span><span style="color: #DD0000">)"</span><span style="color: #007700">);<br />}<br /><br />do {<br /> </span><span style="color: #0000BB">$pkt </span><span style="color: #007700">= </span><span style="color: #0000BB">stream_socket_recvfrom</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">, </span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">$peer</span><span style="color: #007700">);<br /> echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$peer</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">stream_socket_sendto</span><span style="color: #007700">(</span><span style="color: #0000BB">$socket</span><span style="color: #007700">, </span><span style="color: #0000BB">date</span><span style="color: #007700">(</span><span style="color: #DD0000">"D M j H:i:s Y\r\n"</span><span style="color: #007700">), </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">$peer</span><span style="color: #007700">);<br />} while (</span><span style="color: #0000BB">$pkt </span><span style="color: #007700">!== </span><span style="color: #0000BB">false</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.stream-socket-server-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">当指定数值型的 IPv6
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地址（例如 <em>fe80::1</em>）时必须用方括号将 IP 围起来——例如，
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<em>tcp://[fe80::1]:80</em>。</span></p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.stream-socket-server-seealso">
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<h3 class="title">参见</h3>
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="stream_socket_client.html" class="function" rel="rdfs-seeAlso">stream_socket_client()</a> - Open Internet or Unix domain socket connection</span></li>
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<li class="member"><span class="function"><a href="stream_set_blocking.html" class="function" rel="rdfs-seeAlso">stream_set_blocking()</a> - 为资源流设置阻塞或者阻塞模式</span></li>
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<li class="member"><span class="function"><a href="stream_set_timeout.html" class="function" rel="rdfs-seeAlso">stream_set_timeout()</a> - Set timeout period on a stream</span></li>
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<li class="member"><span class="function"><a href="fgets.html" class="function" rel="rdfs-seeAlso">fgets()</a> - 从文件指针中读取一行</span></li>
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<li class="member"><span class="function"><a href="fgetss.html" class="function" rel="rdfs-seeAlso">fgetss()</a> - 从文件指针中读取一行并过滤掉 HTML 标记</span></li>
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<li class="member"><span class="function"><a href="fwrite.html" class="function" rel="rdfs-seeAlso">fwrite()</a> - 写入文件（可安全用于二进制文件）</span></li>
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<li class="member"><span class="function"><a href="fclose.html" class="function" rel="rdfs-seeAlso">fclose()</a> - 关闭一个已打开的文件指针</span></li>
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<li class="member"><span class="function"><a href="feof.html" class="function" rel="rdfs-seeAlso">feof()</a> - 测试文件指针是否到了文件结束的位置</span></li>
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<li class="member"><a href="ref.curl.html" class="link">Curl extension</a></li>
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</ul>
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</div>
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</div></div></div></body></html> |