tls: support multiple keys/certs

Required to serve website with both ECDSA/RSA certificates.

doc/api/tls.markdown

@@ -122,12 +122,12 @@ automatically set as a listener for the [secureConnection][] event.  The
     the `key`, `cert` and `ca` options.)
 
   - `key`: A string or `Buffer` containing the private key of the server in
-    PEM format. (Required)
+    PEM format. (Could be an array of keys). (Required)
 
   - `passphrase`: A string of passphrase for the private key or pfx.
 
   - `cert`: A string or `Buffer` containing the certificate key of the server in
-    PEM format. (Required)
+    PEM format. (Could be an array of certs). (Required)
 
   - `ca`: An array of strings or `Buffer`s of trusted certificates in PEM
     format. If this is omitted several well known "root" CAs will be used,
@@ -303,12 +303,12 @@ Creates a new client connection to the given `port` and `host` (old API) or
     CA certs of the client in PFX or PKCS12 format.
 
   - `key`: A string or `Buffer` containing the private key of the client in
-    PEM format.
+    PEM format. (Could be an array of keys).
 
   - `passphrase`: A string of passphrase for the private key or pfx.
 
   - `cert`: A string or `Buffer` containing the certificate key of the client in
-    PEM format.
+    PEM format. (Could be an array of certs).
 
   - `ca`: An array of strings or `Buffer`s of trusted certificates in PEM
     format. If this is omitted several well known "root" CAs will be used,

lib/_tls_common.js

@@ -64,12 +64,23 @@ exports.createSecureContext = function createSecureContext(options, context) {
   if (context) return c;
 
   if (options.key) {
+    if (Array.isArray(options.key)) {
+      for (var i = 0; i < options.key.length; i++) {
+        var key = options.key[i];
+
+        if (key.passphrase)
+          c.context.setKey(key.pem, key.passphrase);
+        else
+          c.context.setKey(key);
+      }
+    } else {
       if (options.passphrase) {
         c.context.setKey(options.key, options.passphrase);
       } else {
         c.context.setKey(options.key);
       }
     }
+  }
 
   // NOTE: It's important to add CA before the cert to be able to load
   // cert's issuer in C++ code.
@@ -85,7 +96,14 @@ exports.createSecureContext = function createSecureContext(options, context) {
     c.context.addRootCerts();
   }
 
-  if (options.cert) c.context.setCert(options.cert);
+  if (options.cert) {
+    if (Array.isArray(options.cert)) {
+      for (var i = 0; i < options.cert.length; i++)
+        c.context.setCert(options.cert[i]);
+    } else {
+      c.context.setCert(options.cert);
+    }
+  }
 
   if (options.ciphers)
     c.context.setCiphers(options.ciphers);

test/simple/test-tls-multi-key.js

@@ -0,0 +1,74 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+if (!process.versions.openssl) {
+  console.error('Skipping because node compiled without OpenSSL.');
+  process.exit(0);
+}
+
+var common = require('../common');
+var assert = require('assert');
+var tls = require('tls');
+var fs = require('fs');
+
+var options = {
+  key: [
+    fs.readFileSync(common.fixturesDir + '/keys/agent1-key.pem'),
+    fs.readFileSync(common.fixturesDir + '/keys/ec-key.pem')
+  ],
+  cert: [
+    fs.readFileSync(common.fixturesDir + '/keys/agent1-cert.pem'),
+    fs.readFileSync(common.fixturesDir + '/keys/ec-cert.pem')
+  ]
+};
+
+var ciphers = [];
+
+var server = tls.createServer(options, function(conn) {
+  conn.end('ok');
+}).listen(common.PORT, function() {
+  var ecdsa = tls.connect(common.PORT, {
+    ciphers: 'ECDHE-ECDSA-AES256-GCM-SHA384',
+    rejectUnauthorized: false
+  }, function() {
+    var rsa = tls.connect(common.PORT, {
+      ciphers: 'ECDHE-RSA-AES256-GCM-SHA384',
+      rejectUnauthorized: false
+    }, function() {
+      ecdsa.destroy();
+      rsa.destroy();
+
+      ciphers.push(ecdsa.getCipher());
+      ciphers.push(rsa.getCipher());
+      server.close();
+    });
+  });
+});
+
+process.on('exit', function() {
+  assert.deepEqual(ciphers, [{
+    name: 'ECDHE-ECDSA-AES256-GCM-SHA384',
+    version: 'TLSv1/SSLv3'
+  }, {
+    name: 'ECDHE-RSA-AES256-GCM-SHA384',
+    version: 'TLSv1/SSLv3'
+  }]);
+});