embedded_test_server.h revision f2477e01787aa58f445919b809d89e252beef54f 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef NET_TEST_EMBEDDED_TEST_SERVER_EMBEDDED_TEST_SERVER_H_
6#define NET_TEST_EMBEDDED_TEST_SERVER_EMBEDDED_TEST_SERVER_H_
7
8#include <map>
9#include <string>
10#include <vector>
11
12#include "base/basictypes.h"
13#include "base/callback.h"
14#include "base/compiler_specific.h"
15#include "base/memory/ref_counted.h"
16#include "base/memory/weak_ptr.h"
17#include "base/threading/thread.h"
18#include "base/threading/thread_checker.h"
19#include "net/socket/tcp_listen_socket.h"
20#include "url/gurl.h"
21
22namespace base {
23class FilePath;
24}
25
26namespace net {
27namespace test_server {
28
29class HttpConnection;
30class HttpResponse;
31struct HttpRequest;
32
33// This class is required to be able to have composition instead of inheritance,
34class HttpListenSocket : public TCPListenSocket {
35 public:
36  HttpListenSocket(const SocketDescriptor socket_descriptor,
37                   StreamListenSocket::Delegate* delegate);
38  virtual ~HttpListenSocket();
39  virtual void Listen();
40
41 private:
42
43  base::ThreadChecker thread_checker_;
44};
45
46// Class providing an HTTP server for testing purpose. This is a basic server
47// providing only an essential subset of HTTP/1.1 protocol. Especially,
48// it assumes that the request syntax is correct. It *does not* support
49// a Chunked Transfer Encoding.
50//
51// The common use case is below:
52//
53// base::Thread io_thread_;
54// scoped_ptr<EmbeddedTestServer> test_server_;
55//
56// void SetUp() {
57//   base::Thread::Options thread_options;
58//   thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
59//   ASSERT_TRUE(io_thread_.StartWithOptions(thread_options));
60//
61//   test_server_.reset(
62//       new EmbeddedTestServer(io_thread_.message_loop_proxy()));
63//   ASSERT_TRUE(test_server_.InitializeAndWaitUntilReady());
64//   test_server_->RegisterRequestHandler(
65//       base::Bind(&FooTest::HandleRequest, base::Unretained(this)));
66// }
67//
68// scoped_ptr<HttpResponse> HandleRequest(const HttpRequest& request) {
69//   GURL absolute_url = test_server_->GetURL(request.relative_url);
70//   if (absolute_url.path() != "/test")
71//     return scoped_ptr<HttpResponse>();
72//
73//   scoped_ptr<HttpResponse> http_response(new HttpResponse());
74//   http_response->set_code(test_server::SUCCESS);
75//   http_response->set_content("hello");
76//   http_response->set_content_type("text/plain");
77//   return http_response.Pass();
78// }
79//
80class EmbeddedTestServer : public StreamListenSocket::Delegate {
81 public:
82  typedef base::Callback<scoped_ptr<HttpResponse>(
83      const HttpRequest& request)> HandleRequestCallback;
84
85  // Creates a http test server. InitializeAndWaitUntilReady() must be called
86  // to start the server.
87  EmbeddedTestServer();
88  virtual ~EmbeddedTestServer();
89
90  // Initializes and waits until the server is ready to accept requests.
91  bool InitializeAndWaitUntilReady() WARN_UNUSED_RESULT;
92
93  // Shuts down the http server and waits until the shutdown is complete.
94  bool ShutdownAndWaitUntilComplete() WARN_UNUSED_RESULT;
95
96  // Checks if the server is started.
97  bool Started() const {
98    return listen_socket_.get() != NULL;
99  }
100
101  // Returns the base URL to the server, which looks like
102  // http://127.0.0.1:<port>/, where <port> is the actual port number used by
103  // the server.
104  const GURL& base_url() const { return base_url_; }
105
106  // Returns a URL to the server based on the given relative URL, which
107  // should start with '/'. For example: GetURL("/path?query=foo") =>
108  // http://127.0.0.1:<port>/path?query=foo.
109  GURL GetURL(const std::string& relative_url) const;
110
111  // Returns the port number used by the server.
112  int port() const { return port_; }
113
114  // Registers request handler which serves files from |directory|.
115  // For instance, a request to "/foo.html" is served by "foo.html" under
116  // |directory|. Files under sub directories are also handled in the same way
117  // (i.e. "/foo/bar.html" is served by "foo/bar.html" under |directory|).
118  void ServeFilesFromDirectory(const base::FilePath& directory);
119
120  // The most general purpose method. Any request processing can be added using
121  // this method. Takes ownership of the object. The |callback| is called
122  // on UI thread.
123  void RegisterRequestHandler(const HandleRequestCallback& callback);
124
125 private:
126  // Initializes and starts the server. If initialization succeeds, Starts()
127  // will return true.
128  void InitializeOnIOThread();
129
130  // Shuts down the server.
131  void ShutdownOnIOThread();
132
133  // Handles a request when it is parsed. It passes the request to registed
134  // request handlers and sends a http response.
135  void HandleRequest(HttpConnection* connection,
136                     scoped_ptr<HttpRequest> request);
137
138  // StreamListenSocket::Delegate overrides:
139  virtual void DidAccept(StreamListenSocket* server,
140                         scoped_ptr<StreamListenSocket> connection) OVERRIDE;
141  virtual void DidRead(StreamListenSocket* connection,
142                       const char* data,
143                       int length) OVERRIDE;
144  virtual void DidClose(StreamListenSocket* connection) OVERRIDE;
145
146  HttpConnection* FindConnection(StreamListenSocket* socket);
147
148  // Posts a task to the |io_thread_| and waits for a reply.
149  bool PostTaskToIOThreadAndWait(
150      const base::Closure& closure) WARN_UNUSED_RESULT;
151
152  scoped_ptr<base::Thread> io_thread_;
153
154  scoped_ptr<HttpListenSocket> listen_socket_;
155  int port_;
156  GURL base_url_;
157
158  // Owns the HttpConnection objects.
159  std::map<StreamListenSocket*, HttpConnection*> connections_;
160
161  // Vector of registered request handlers.
162  std::vector<HandleRequestCallback> request_handlers_;
163
164  // Note: This should remain the last member so it'll be destroyed and
165  // invalidate its weak pointers before any other members are destroyed.
166  base::WeakPtrFactory<EmbeddedTestServer> weak_factory_;
167
168  base::ThreadChecker thread_checker_;
169
170  DISALLOW_COPY_AND_ASSIGN(EmbeddedTestServer);
171};
172
173}  // namespace test_servers
174}  // namespace net
175
176#endif  // NET_TEST_EMBEDDED_TEST_SERVER_EMBEDDED_TEST_SERVER_H_
177