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Diffstat (limited to 'node_modules/express/node_modules/connect/lib/http.js')
| -rw-r--r-- | node_modules/express/node_modules/connect/lib/http.js | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/node_modules/express/node_modules/connect/lib/http.js b/node_modules/express/node_modules/connect/lib/http.js new file mode 100644 index 0000000..09898e2 --- /dev/null +++ b/node_modules/express/node_modules/connect/lib/http.js @@ -0,0 +1,217 @@ + +/*! + * Connect - HTTPServer + * Copyright(c) 2010 Sencha Inc. + * Copyright(c) 2011 TJ Holowaychuk + * MIT Licensed + */ + +/** + * Module dependencies. + */ + +var http = require('http') + , parse = require('url').parse + , assert = require('assert'); + +// environment + +var env = process.env.NODE_ENV || 'development'; + +/** + * Initialize a new `Server` with the given `middleware`. + * + * Examples: + * + * var server = connect.createServer( + * connect.favicon() + * , connect.logger() + * , connect.static(__dirname + '/public') + * ); + * + * @params {Array} middleware + * @return {Server} + * @api public + */ + +var Server = exports.Server = function HTTPServer(middleware) { + this.stack = []; + middleware.forEach(function(fn){ + this.use(fn); + }, this); + http.Server.call(this, this.handle); +}; + +/** + * Inherit from `http.Server.prototype`. + */ + +Server.prototype.__proto__ = http.Server.prototype; + +/** + * Utilize the given middleware `handle` to the given `route`, + * defaulting to _/_. This "route" is the mount-point for the + * middleware, when given a value other than _/_ the middleware + * is only effective when that segment is present in the request's + * pathname. + * + * For example if we were to mount a function at _/admin_, it would + * be invoked on _/admin_, and _/admin/settings_, however it would + * not be invoked for _/_, or _/posts_. + * + * This is effectively the same as passing middleware to `connect.createServer()`, + * however provides a progressive api. + * + * Examples: + * + * var server = connect.createServer(); + * server.use(connect.favicon()); + * server.use(connect.logger()); + * server.use(connect.static(__dirname + '/public')); + * + * If we wanted to prefix static files with _/public_, we could + * "mount" the `static()` middleware: + * + * server.use('/public', connect.static(__dirname + '/public')); + * + * This api is chainable, meaning the following is valid: + * + * connect.createServer() + * .use(connect.favicon()) + * .use(connect.logger()) + * .use(connect.static(__dirname + '/public')) + * .listen(3000); + * + * @param {String|Function} route or handle + * @param {Function} handle + * @return {Server} + * @api public + */ + +Server.prototype.use = function(route, handle){ + this.route = '/'; + + // default route to '/' + if ('string' != typeof route) { + handle = route; + route = '/'; + } + + // wrap sub-apps + if ('function' == typeof handle.handle) { + var server = handle; + server.route = route; + handle = function(req, res, next) { + server.handle(req, res, next); + }; + } + + // wrap vanilla http.Servers + if (handle instanceof http.Server) { + handle = handle.listeners('request')[0]; + } + + // normalize route to not trail with slash + if ('/' == route[route.length - 1]) { + route = route.substr(0, route.length - 1); + } + + // add the middleware + this.stack.push({ route: route, handle: handle }); + + // allow chaining + return this; +}; + +/** + * Handle server requests, punting them down + * the middleware stack. + * + * @api private + */ + +Server.prototype.handle = function(req, res, out) { + var writeHead = res.writeHead + , stack = this.stack + , removed = '' + , index = 0; + + function next(err) { + var layer, path, c; + req.url = removed + req.url; + req.originalUrl = req.originalUrl || req.url; + removed = ''; + + layer = stack[index++]; + + // all done + if (!layer || res.headerSent) { + // but wait! we have a parent + if (out) return out(err); + + // error + if (err) { + var msg = 'production' == env + ? 'Internal Server Error' + : err.stack || err.toString(); + + // output to stderr in a non-test env + if ('test' != env) console.error(err.stack || err.toString()); + + // unable to respond + if (res.headerSent) return req.socket.destroy(); + + res.statusCode = 500; + res.setHeader('Content-Type', 'text/plain'); + if ('HEAD' == req.method) return res.end(); + res.end(msg); + } else { + res.statusCode = 404; + res.setHeader('Content-Type', 'text/plain'); + if ('HEAD' == req.method) return res.end(); + res.end('Cannot ' + req.method + ' ' + req.url); + } + return; + } + + try { + path = parse(req.url).pathname; + if (undefined == path) path = '/'; + + // skip this layer if the route doesn't match. + if (0 != path.indexOf(layer.route)) return next(err); + + c = path[layer.route.length]; + if (c && '/' != c && '.' != c) return next(err); + + // Call the layer handler + // Trim off the part of the url that matches the route + removed = layer.route; + req.url = req.url.substr(removed.length); + + // Ensure leading slash + if ('/' != req.url[0]) req.url = '/' + req.url; + + var arity = layer.handle.length; + if (err) { + if (arity === 4) { + layer.handle(err, req, res, next); + } else { + next(err); + } + } else if (arity < 4) { + layer.handle(req, res, next); + } else { + next(); + } + } catch (e) { + if (e instanceof assert.AssertionError) { + console.error(e.stack + '\n'); + next(e); + } else { + next(e); + } + } + } + next(); +};
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