[examples] added error-handling using callbacks and HTTP-to-HTTPS exa…

…mples

examples/http/error-handling.js

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+/*
+  error-handling.js: Example of handle erros for HTTP and WebSockets
+
+  Copyright (c) Nodejitsu 2013
+
+  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.
+
+*/
+
+var util = require('util'),
+    colors = require('colors'),
+    http = require('http'),
+    httpProxy = require('../../lib/http-proxy');
+
+//
+// HTTP Proxy Server
+//
+var proxy = httpProxy.createProxyServer({target:'http://localhost:9000', ws:true});
+
+//
+// Example of error handling
+//
+function requestHandler(req, res) {
+  // Pass a callback to the web proxy method
+  // and catch the error there.
+  proxy.web(req, res, function (err) {
+    // Now you can get the err
+    // and handle it by your self
+    // if (err) throw err;
+    res.writeHead(502);
+    res.end("There was an error proxying your request");
+  });
+
+  // In a websocket request case
+  req.on('upgrade', function (req, socket, head) {
+    proxy.ws(req, socket, head, function (err) {
+      // Now you can get the err
+      // and handle it by your self
+      // if (err) throw err;
+      socket.close();
+    })
+  })
+}
+
+http.createServer(requestHandler).listen(8000);
+util.puts('http proxy server'.blue + ' started '.green.bold + 'on port '.blue + '8000'.yellow);

examples/http/proxy-http-to-https.js

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+/*
+  proxy-http-to-https.js: Basic example of proxying over HTTP to a target HTTPS server
+
+  Copyright (c) Nodejitsu 2013
+
+  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.
+
+*/
+
+var https = require('https'),
+    http  = require('http'),
+    util  = require('util'),
+    path  = require('path'),
+    fs    = require('fs'),
+    colors = require('colors'),
+    httpProxy = require('../../lib/http-proxy');
+
+//
+// Create a HTTP Proxy server with a HTTPS target
+//
+httpProxy.createProxyServer({
+  target: 'https://google.com',
+  agent  : https.globalAgent,
+  headers: {
+    host: 'google.com'
+  }
+}).listen(8000);
+
+util.puts('http proxy server'.blue + ' started '.green.bold + 'on port '.blue + '8000'.yellow);