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<h1>Node.js v0.8.14 Manual &amp; Documentation</h1>
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<div id="toc">
<h2>Table of Contents</h2>
<ul>
<li><a href="#tls_tls_ssl">TLS (SSL)</a><ul>
<li><a href="#tls_client_initiated_renegotiation_attack_mitigation">Client-initiated renegotiation attack mitigation</a></li>
<li><a href="#tls_npn_and_sni">NPN and SNI</a></li>
<li><a href="#tls_tls_createserver_options_secureconnectionlistener">tls.createServer(options, [secureConnectionListener])</a></li>
<li><a href="#tls_tls_connect_options_callback">tls.connect(options, [callback])</a></li>
<li><a href="#tls_tls_connect_port_host_options_callback">tls.connect(port, [host], [options], [callback])</a></li>
<li><a href="#tls_tls_createsecurepair_credentials_isserver_requestcert_rejectunauthorized">tls.createSecurePair([credentials], [isServer], [requestCert], [rejectUnauthorized])</a></li>
<li><a href="#tls_class_securepair">Class: SecurePair</a><ul>
<li><a href="#tls_event_secure">Event: &#39;secure&#39;</a></li>
</ul>
</li>
<li><a href="#tls_class_tls_server">Class: tls.Server</a><ul>
<li><a href="#tls_event_secureconnection">Event: &#39;secureConnection&#39;</a></li>
<li><a href="#tls_event_clienterror">Event: &#39;clientError&#39;</a></li>
<li><a href="#tls_server_listen_port_host_callback">server.listen(port, [host], [callback])</a></li>
<li><a href="#tls_server_close">server.close()</a></li>
<li><a href="#tls_server_address">server.address()</a></li>
<li><a href="#tls_server_addcontext_hostname_credentials">server.addContext(hostname, credentials)</a></li>
<li><a href="#tls_server_maxconnections">server.maxConnections</a></li>
<li><a href="#tls_server_connections">server.connections</a></li>
</ul>
</li>
<li><a href="#tls_class_tls_cleartextstream">Class: tls.CleartextStream</a><ul>
<li><a href="#tls_event_secureconnect">Event: &#39;secureConnect&#39;</a></li>
<li><a href="#tls_cleartextstream_authorized">cleartextStream.authorized</a></li>
<li><a href="#tls_cleartextstream_authorizationerror">cleartextStream.authorizationError</a></li>
<li><a href="#tls_cleartextstream_getpeercertificate">cleartextStream.getPeerCertificate()</a></li>
<li><a href="#tls_cleartextstream_getcipher">cleartextStream.getCipher()</a></li>
<li><a href="#tls_cleartextstream_address">cleartextStream.address()</a></li>
<li><a href="#tls_cleartextstream_remoteaddress">cleartextStream.remoteAddress</a></li>
<li><a href="#tls_cleartextstream_remoteport">cleartextStream.remotePort</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
<div id="apicontent">
<h1>TLS (SSL)<span><a class="mark" href="#tls_tls_ssl" id="tls_tls_ssl">#</a></span></h1>
<pre><code>Stability: 3 - Stable</code></pre>
<p>Use <code>require(&#39;tls&#39;)</code> to access this module.
</p>
<p>The <code>tls</code> module uses OpenSSL to provide Transport Layer Security and/or
Secure Socket Layer: encrypted stream communication.
</p>
<p>TLS/SSL is a public/private key infrastructure. Each client and each
server must have a private key. A private key is created like this
</p>
<pre><code>openssl genrsa -out ryans-key.pem 1024</code></pre>
<p>All severs and some clients need to have a certificate. Certificates are public
keys signed by a Certificate Authority or self-signed. The first step to
getting a certificate is to create a &quot;Certificate Signing Request&quot; (CSR)
file. This is done with:
</p>
<pre><code>openssl req -new -key ryans-key.pem -out ryans-csr.pem</code></pre>
<p>To create a self-signed certificate with the CSR, do this:
</p>
<pre><code>openssl x509 -req -in ryans-csr.pem -signkey ryans-key.pem -out ryans-cert.pem</code></pre>
<p>Alternatively you can send the CSR to a Certificate Authority for signing.
</p>
<p>(TODO: docs on creating a CA, for now interested users should just look at
<code>test/fixtures/keys/Makefile</code> in the Node source code)
</p>
<p>To create .pfx or .p12, do this:
</p>
<pre><code>openssl pkcs12 -export -in agent5-cert.pem -inkey agent5-key.pem \
-certfile ca-cert.pem -out agent5.pfx</code></pre>
<ul>
<li><code>in</code>: certificate</li>
<li><code>inkey</code>: private key</li>
<li><code>certfile</code>: all CA certs concatenated in one file like
<code>cat ca1-cert.pem ca2-cert.pem &gt; ca-cert.pem</code></li>
</ul>
<h2>Client-initiated renegotiation attack mitigation<span><a class="mark" href="#tls_client_initiated_renegotiation_attack_mitigation" id="tls_client_initiated_renegotiation_attack_mitigation">#</a></span></h2>
<!-- type=misc -->
<p>The TLS protocol lets the client renegotiate certain aspects of the TLS session.
Unfortunately, session renegotiation requires a disproportional amount of
server-side resources, which makes it a potential vector for denial-of-service
attacks.
</p>
<p>To mitigate this, renegotiations are limited to three times every 10 minutes. An
error is emitted on the <a href="#tls_class_tls_cleartextstream">CleartextStream</a> instance when the threshold is
exceeded. The limits are configurable:
</p>
<ul>
<li><p><code>tls.CLIENT_RENEG_LIMIT</code>: renegotiation limit, default is 3.</p>
</li>
<li><p><code>tls.CLIENT_RENEG_WINDOW</code>: renegotiation window in seconds, default is</p>
<pre><code> 10 minutes.</code></pre>
</li>
</ul>
<p>Don&#39;t change the defaults unless you know what you are doing.
</p>
<p>To test your server, connect to it with <code>openssl s_client -connect address:port</code>
and tap <code>R&lt;CR&gt;</code> (that&#39;s the letter <code>R</code> followed by a carriage return) a few
times.
</p>
<h2>NPN and SNI<span><a class="mark" href="#tls_npn_and_sni" id="tls_npn_and_sni">#</a></span></h2>
<!-- type=misc -->
<p>NPN (Next Protocol Negotiation) and SNI (Server Name Indication) are TLS
handshake extensions allowing you:
</p>
<ul>
<li>NPN - to use one TLS server for multiple protocols (HTTP, SPDY)</li>
<li>SNI - to use one TLS server for multiple hostnames with different SSL
certificates.</li>
</ul>
<h2>tls.createServer(options, [secureConnectionListener])<span><a class="mark" href="#tls_tls_createserver_options_secureconnectionlistener" id="tls_tls_createserver_options_secureconnectionlistener">#</a></span></h2>
<p>Creates a new <a href="#tls_class_tls_server">tls.Server</a>. The <code>connectionListener</code> argument is
automatically set as a listener for the <a href="#tls_event_secureconnection">secureConnection</a> event. The
<code>options</code> object has these possibilities:
</p>
<ul>
<li><p><code>pfx</code>: A string or <code>Buffer</code> containing the private key, certificate and
CA certs of the server in PFX or PKCS12 format. (Mutually exclusive with
the <code>key</code>, <code>cert</code> and <code>ca</code> options.)</p>
</li>
<li><p><code>key</code>: A string or <code>Buffer</code> containing the private key of the server in
PEM format. (Required)</p>
</li>
<li><p><code>passphrase</code>: A string of passphrase for the private key or pfx.</p>
</li>
<li><p><code>cert</code>: A string or <code>Buffer</code> containing the certificate key of the server in
PEM format. (Required)</p>
</li>
<li><p><code>ca</code>: An array of strings or <code>Buffer</code>s of trusted certificates. If this is
omitted several well known &quot;root&quot; CAs will be used, like VeriSign.
These are used to authorize connections.</p>
</li>
<li><p><code>crl</code> : Either a string or list of strings of PEM encoded CRLs (Certificate
Revocation List)</p>
</li>
<li><p><code>ciphers</code>: A string describing the ciphers to use or exclude.</p>
<p>To mitigate <a href="http://blog.ivanristic.com/2011/10/mitigating-the-beast-attack-on-tls.html">BEAST attacks</a> it is recommended that you use this option in
conjunction with the <code>honorCipherOrder</code> option described below to
prioritize the non-CBC cipher.</p>
<p>Defaults to
<code>ECDHE-RSA-AES128-SHA256:AES128-GCM-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH</code>.
Consult the <a href="http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT">OpenSSL cipher list format documentation</a> for details on the
format.</p>
<p><code>ECDHE-RSA-AES128-SHA256</code> and <code>AES128-GCM-SHA256</code> are used when node.js is
linked against OpenSSL 1.0.1 or newer and the client speaks TLS 1.2, RC4 is
used as a secure fallback.</p>
<p><strong>NOTE</strong>: Previous revisions of this section suggested <code>AES256-SHA</code> as an
acceptable cipher. Unfortunately, <code>AES256-SHA</code> is a CBC cipher and therefore
susceptible to BEAST attacks. Do <em>not</em> use it.</p>
</li>
<li><p><code>honorCipherOrder</code> : When choosing a cipher, use the server&#39;s preferences
instead of the client preferences.</p>
<p>Note that if SSLv2 is used, the server will send its list of preferences
to the client, and the client chooses the cipher.</p>
<p>Although, this option is disabled by default, it is <em>recommended</em> that you
use this option in conjunction with the <code>ciphers</code> option to mitigate
BEAST attacks.</p>
</li>
<li><p><code>requestCert</code>: If <code>true</code> the server will request a certificate from
clients that connect and attempt to verify that certificate. Default:
<code>false</code>.</p>
</li>
<li><p><code>rejectUnauthorized</code>: If <code>true</code> the server will reject any connection
which is not authorized with the list of supplied CAs. This option only
has an effect if <code>requestCert</code> is <code>true</code>. Default: <code>false</code>.</p>
</li>
<li><p><code>NPNProtocols</code>: An array or <code>Buffer</code> of possible NPN protocols. (Protocols
should be ordered by their priority).</p>
</li>
<li><p><code>SNICallback</code>: A function that will be called if client supports SNI TLS
extension. Only one argument will be passed to it: <code>servername</code>. And
<code>SNICallback</code> should return SecureContext instance.
(You can use <code>crypto.createCredentials(...).context</code> to get proper
SecureContext). If <code>SNICallback</code> wasn&#39;t provided - default callback with
high-level API will be used (see below).</p>
</li>
<li><p><code>sessionIdContext</code>: A string containing a opaque identifier for session
resumption. If <code>requestCert</code> is <code>true</code>, the default is MD5 hash value
generated from command-line. Otherwise, the default is not provided.</p>
</li>
</ul>
<p>Here is a simple example echo server:
</p>
<pre><code>var tls = require(&#39;tls&#39;);
var fs = require(&#39;fs&#39;);
var options = {
key: fs.readFileSync(&#39;server-key.pem&#39;),
cert: fs.readFileSync(&#39;server-cert.pem&#39;),
// This is necessary only if using the client certificate authentication.
requestCert: true,
// This is necessary only if the client uses the self-signed certificate.
ca: [ fs.readFileSync(&#39;client-cert.pem&#39;) ]
};
var server = tls.createServer(options, function(cleartextStream) {
console.log(&#39;server connected&#39;,
cleartextStream.authorized ? &#39;authorized&#39; : &#39;unauthorized&#39;);
cleartextStream.write(&quot;welcome!\n&quot;);
cleartextStream.setEncoding(&#39;utf8&#39;);
cleartextStream.pipe(cleartextStream);
});
server.listen(8000, function() {
console.log(&#39;server bound&#39;);
});</code></pre>
<p>Or
</p>
<pre><code>var tls = require(&#39;tls&#39;);
var fs = require(&#39;fs&#39;);
var options = {
pfx: fs.readFileSync(&#39;server.pfx&#39;),
// This is necessary only if using the client certificate authentication.
requestCert: true,
};
var server = tls.createServer(options, function(cleartextStream) {
console.log(&#39;server connected&#39;,
cleartextStream.authorized ? &#39;authorized&#39; : &#39;unauthorized&#39;);
cleartextStream.write(&quot;welcome!\n&quot;);
cleartextStream.setEncoding(&#39;utf8&#39;);
cleartextStream.pipe(cleartextStream);
});
server.listen(8000, function() {
console.log(&#39;server bound&#39;);
});</code></pre>
<p>You can test this server by connecting to it with <code>openssl s_client</code>:
</p>
<pre><code>openssl s_client -connect 127.0.0.1:8000</code></pre>
<h2>tls.connect(options, [callback])<span><a class="mark" href="#tls_tls_connect_options_callback" id="tls_tls_connect_options_callback">#</a></span></h2>
<h2>tls.connect(port, [host], [options], [callback])<span><a class="mark" href="#tls_tls_connect_port_host_options_callback" id="tls_tls_connect_port_host_options_callback">#</a></span></h2>
<p>Creates a new client connection to the given <code>port</code> and <code>host</code> (old API) or
<code>options.port</code> and <code>options.host</code>. (If <code>host</code> is omitted, it defaults to
<code>localhost</code>.) <code>options</code> should be an object which specifies:
</p>
<ul>
<li><p><code>host</code>: Host the client should connect to</p>
</li>
<li><p><code>port</code>: Port the client should connect to</p>
</li>
<li><p><code>socket</code>: Establish secure connection on a given socket rather than
creating a new socket. If this option is specified, <code>host</code> and <code>port</code>
are ignored.</p>
</li>
<li><p><code>pfx</code>: A string or <code>Buffer</code> containing the private key, certificate and
CA certs of the server in PFX or PKCS12 format.</p>
</li>
<li><p><code>key</code>: A string or <code>Buffer</code> containing the private key of the client in
PEM format.</p>
</li>
<li><p><code>passphrase</code>: A string of passphrase for the private key or pfx.</p>
</li>
<li><p><code>cert</code>: A string or <code>Buffer</code> containing the certificate key of the client in
PEM format.</p>
</li>
<li><p><code>ca</code>: An array of strings or <code>Buffer</code>s of trusted certificates. If this is
omitted several well known &quot;root&quot; CAs will be used, like VeriSign.
These are used to authorize connections.</p>
</li>
<li><p><code>rejectUnauthorized</code>: If <code>true</code>, the server certificate is verified against
the list of supplied CAs. An <code>&#39;error&#39;</code> event is emitted if verification
fails. Default: <code>false</code>.</p>
</li>
<li><p><code>NPNProtocols</code>: An array of string or <code>Buffer</code> containing supported NPN
protocols. <code>Buffer</code> should have following format: <code>0x05hello0x05world</code>,
where first byte is next protocol name&#39;s length. (Passing array should
usually be much simpler: <code>[&#39;hello&#39;, &#39;world&#39;]</code>.)</p>
</li>
<li><p><code>servername</code>: Servername for SNI (Server Name Indication) TLS extension.</p>
</li>
</ul>
<p>The <code>callback</code> parameter will be added as a listener for the
<a href="#tls_event_secureconnect">&#39;secureConnect&#39;</a> event.
</p>
<p><code>tls.connect()</code> returns a <a href="#tls_class_tls_cleartextstream">CleartextStream</a> object.
</p>
<p>Here is an example of a client of echo server as described previously:
</p>
<pre><code>var tls = require(&#39;tls&#39;);
var fs = require(&#39;fs&#39;);
var options = {
// These are necessary only if using the client certificate authentication
key: fs.readFileSync(&#39;client-key.pem&#39;),
cert: fs.readFileSync(&#39;client-cert.pem&#39;),
// This is necessary only if the server uses the self-signed certificate
ca: [ fs.readFileSync(&#39;server-cert.pem&#39;) ]
};
var cleartextStream = tls.connect(8000, options, function() {
console.log(&#39;client connected&#39;,
cleartextStream.authorized ? &#39;authorized&#39; : &#39;unauthorized&#39;);
process.stdin.pipe(cleartextStream);
process.stdin.resume();
});
cleartextStream.setEncoding(&#39;utf8&#39;);
cleartextStream.on(&#39;data&#39;, function(data) {
console.log(data);
});
cleartextStream.on(&#39;end&#39;, function() {
server.close();
});</code></pre>
<p>Or
</p>
<pre><code>var tls = require(&#39;tls&#39;);
var fs = require(&#39;fs&#39;);
var options = {
pfx: fs.readFileSync(&#39;client.pfx&#39;)
};
var cleartextStream = tls.connect(8000, options, function() {
console.log(&#39;client connected&#39;,
cleartextStream.authorized ? &#39;authorized&#39; : &#39;unauthorized&#39;);
process.stdin.pipe(cleartextStream);
process.stdin.resume();
});
cleartextStream.setEncoding(&#39;utf8&#39;);
cleartextStream.on(&#39;data&#39;, function(data) {
console.log(data);
});
cleartextStream.on(&#39;end&#39;, function() {
server.close();
});</code></pre>
<h2>tls.createSecurePair([credentials], [isServer], [requestCert], [rejectUnauthorized])<span><a class="mark" href="#tls_tls_createsecurepair_credentials_isserver_requestcert_rejectunauthorized" id="tls_tls_createsecurepair_credentials_isserver_requestcert_rejectunauthorized">#</a></span></h2>
<p>Creates a new secure pair object with two streams, one of which reads/writes
encrypted data, and one reads/writes cleartext data.
Generally the encrypted one is piped to/from an incoming encrypted data stream,
and the cleartext one is used as a replacement for the initial encrypted stream.
</p>
<ul>
<li><p><code>credentials</code>: A credentials object from crypto.createCredentials( ... )</p>
</li>
<li><p><code>isServer</code>: A boolean indicating whether this tls connection should be
opened as a server or a client.</p>
</li>
<li><p><code>requestCert</code>: A boolean indicating whether a server should request a
certificate from a connecting client. Only applies to server connections.</p>
</li>
<li><p><code>rejectUnauthorized</code>: A boolean indicating whether a server should
automatically reject clients with invalid certificates. Only applies to
servers with <code>requestCert</code> enabled.</p>
</li>
</ul>
<p><code>tls.createSecurePair()</code> returns a SecurePair object with [cleartext][] and
<code>encrypted</code> stream properties.
</p>
<h2>Class: SecurePair<span><a class="mark" href="#tls_class_securepair" id="tls_class_securepair">#</a></span></h2>
<p>Returned by tls.createSecurePair.
</p>
<h3>Event: &#39;secure&#39;<span><a class="mark" href="#tls_event_secure" id="tls_event_secure">#</a></span></h3>
<p>The event is emitted from the SecurePair once the pair has successfully
established a secure connection.
</p>
<p>Similarly to the checking for the server &#39;secureConnection&#39; event,
pair.cleartext.authorized should be checked to confirm whether the certificate
used properly authorized.
</p>
<h2>Class: tls.Server<span><a class="mark" href="#tls_class_tls_server" id="tls_class_tls_server">#</a></span></h2>
<p>This class is a subclass of <code>net.Server</code> and has the same methods on it.
Instead of accepting just raw TCP connections, this accepts encrypted
connections using TLS or SSL.
</p>
<h3>Event: &#39;secureConnection&#39;<span><a class="mark" href="#tls_event_secureconnection" id="tls_event_secureconnection">#</a></span></h3>
<p><code>function (cleartextStream) {}</code>
</p>
<p>This event is emitted after a new connection has been successfully
handshaked. The argument is a instance of <a href="#tls_class_tls_cleartextstream">CleartextStream</a>. It has all the
common stream methods and events.
</p>
<p><code>cleartextStream.authorized</code> is a boolean value which indicates if the
client has verified by one of the supplied certificate authorities for the
server. If <code>cleartextStream.authorized</code> is false, then
<code>cleartextStream.authorizationError</code> is set to describe how authorization
failed. Implied but worth mentioning: depending on the settings of the TLS
server, you unauthorized connections may be accepted.
<code>cleartextStream.npnProtocol</code> is a string containing selected NPN protocol.
<code>cleartextStream.servername</code> is a string containing servername requested with
SNI.
</p>
<h3>Event: &#39;clientError&#39;<span><a class="mark" href="#tls_event_clienterror" id="tls_event_clienterror">#</a></span></h3>
<p><code>function (exception) { }</code>
</p>
<p>When a client connection emits an &#39;error&#39; event before secure connection is
established - it will be forwarded here.
</p>
<h3>server.listen(port, [host], [callback])<span><a class="mark" href="#tls_server_listen_port_host_callback" id="tls_server_listen_port_host_callback">#</a></span></h3>
<p>Begin accepting connections on the specified <code>port</code> and <code>host</code>. If the
<code>host</code> is omitted, the server will accept connections directed to any
IPv4 address (<code>INADDR_ANY</code>).
</p>
<p>This function is asynchronous. The last parameter <code>callback</code> will be called
when the server has been bound.
</p>
<p>See <code>net.Server</code> for more information.
</p>
<h3>server.close()<span><a class="mark" href="#tls_server_close" id="tls_server_close">#</a></span></h3>
<p>Stops the server from accepting new connections. This function is
asynchronous, the server is finally closed when the server emits a <code>&#39;close&#39;</code>
event.
</p>
<h3>server.address()<span><a class="mark" href="#tls_server_address" id="tls_server_address">#</a></span></h3>
<p>Returns the bound address, the address family name and port of the
server as reported by the operating system. See <a href="net.html#net_server_address">net.Server.address()</a> for
more information.
</p>
<h3>server.addContext(hostname, credentials)<span><a class="mark" href="#tls_server_addcontext_hostname_credentials" id="tls_server_addcontext_hostname_credentials">#</a></span></h3>
<p>Add secure context that will be used if client request&#39;s SNI hostname is
matching passed <code>hostname</code> (wildcards can be used). <code>credentials</code> can contain
<code>key</code>, <code>cert</code> and <code>ca</code>.
</p>
<h3>server.maxConnections<span><a class="mark" href="#tls_server_maxconnections" id="tls_server_maxconnections">#</a></span></h3>
<p>Set this property to reject connections when the server&#39;s connection count
gets high.
</p>
<h3>server.connections<span><a class="mark" href="#tls_server_connections" id="tls_server_connections">#</a></span></h3>
<p>The number of concurrent connections on the server.
</p>
<h2>Class: tls.CleartextStream<span><a class="mark" href="#tls_class_tls_cleartextstream" id="tls_class_tls_cleartextstream">#</a></span></h2>
<p>This is a stream on top of the <em>Encrypted</em> stream that makes it possible to
read/write an encrypted data as a cleartext data.
</p>
<p>This instance implements a duplex <a href="stream.html#stream_stream">Stream</a> interfaces. It has all the
common stream methods and events.
</p>
<p>A ClearTextStream is the <code>clear</code> member of a SecurePair object.
</p>
<h3>Event: &#39;secureConnect&#39;<span><a class="mark" href="#tls_event_secureconnect" id="tls_event_secureconnect">#</a></span></h3>
<p>This event is emitted after a new connection has been successfully handshaked.
The listener will be called no matter if the server&#39;s certificate was
authorized or not. It is up to the user to test <code>cleartextStream.authorized</code>
to see if the server certificate was signed by one of the specified CAs.
If <code>cleartextStream.authorized === false</code> then the error can be found in
<code>cleartextStream.authorizationError</code>. Also if NPN was used - you can check
<code>cleartextStream.npnProtocol</code> for negotiated protocol.
</p>
<h3>cleartextStream.authorized<span><a class="mark" href="#tls_cleartextstream_authorized" id="tls_cleartextstream_authorized">#</a></span></h3>
<p>A boolean that is <code>true</code> if the peer certificate was signed by one of the
specified CAs, otherwise <code>false</code>
</p>
<h3>cleartextStream.authorizationError<span><a class="mark" href="#tls_cleartextstream_authorizationerror" id="tls_cleartextstream_authorizationerror">#</a></span></h3>
<p>The reason why the peer&#39;s certificate has not been verified. This property
becomes available only when <code>cleartextStream.authorized === false</code>.
</p>
<h3>cleartextStream.getPeerCertificate()<span><a class="mark" href="#tls_cleartextstream_getpeercertificate" id="tls_cleartextstream_getpeercertificate">#</a></span></h3>
<p>Returns an object representing the peer&#39;s certificate. The returned object has
some properties corresponding to the field of the certificate.
</p>
<p>Example:
</p>
<pre><code>{ subject:
{ C: &#39;UK&#39;,
ST: &#39;Acknack Ltd&#39;,
L: &#39;Rhys Jones&#39;,
O: &#39;node.js&#39;,
OU: &#39;Test TLS Certificate&#39;,
CN: &#39;localhost&#39; },
issuer:
{ C: &#39;UK&#39;,
ST: &#39;Acknack Ltd&#39;,
L: &#39;Rhys Jones&#39;,
O: &#39;node.js&#39;,
OU: &#39;Test TLS Certificate&#39;,
CN: &#39;localhost&#39; },
valid_from: &#39;Nov 11 09:52:22 2009 GMT&#39;,
valid_to: &#39;Nov 6 09:52:22 2029 GMT&#39;,
fingerprint: &#39;2A:7A:C2:DD:E5:F9:CC:53:72:35:99:7A:02:5A:71:38:52:EC:8A:DF&#39; }</code></pre>
<p>If the peer does not provide a certificate, it returns <code>null</code> or an empty
object.
</p>
<h3>cleartextStream.getCipher()<span><a class="mark" href="#tls_cleartextstream_getcipher" id="tls_cleartextstream_getcipher">#</a></span></h3>
<p>Returns an object representing the cipher name and the SSL/TLS
protocol version of the current connection.
</p>
<p>Example:
{ name: &#39;AES256-SHA&#39;, version: &#39;TLSv1/SSLv3&#39; }
</p>
<p>See SSL_CIPHER_get_name() and SSL_CIPHER_get_version() in
<a href="http://www.openssl.org/docs/ssl/ssl.html#DEALING_WITH_CIPHERS">http://www.openssl.org/docs/ssl/ssl.html#DEALING_WITH_CIPHERS</a> for more
information.
</p>
<h3>cleartextStream.address()<span><a class="mark" href="#tls_cleartextstream_address" id="tls_cleartextstream_address">#</a></span></h3>
<p>Returns the bound address, the address family name and port of the
underlying socket as reported by the operating system. Returns an
object with three properties, e.g.
<code>{ port: 12346, family: &#39;IPv4&#39;, address: &#39;127.0.0.1&#39; }</code>
</p>
<h3>cleartextStream.remoteAddress<span><a class="mark" href="#tls_cleartextstream_remoteaddress" id="tls_cleartextstream_remoteaddress">#</a></span></h3>
<p>The string representation of the remote IP address. For example,
<code>&#39;74.125.127.100&#39;</code> or <code>&#39;2001:4860:a005::68&#39;</code>.
</p>
<h3>cleartextStream.remotePort<span><a class="mark" href="#tls_cleartextstream_remoteport" id="tls_cleartextstream_remoteport">#</a></span></h3>
<p>The numeric representation of the remote port. For example, <code>443</code>.
</p>
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