add basic http server (using boost.asio example)
Change-Id: I02bbc161ec7f89ade999b92ed99ef71fec83af32
diff --git a/server/connection.cpp b/server/connection.cpp
new file mode 100644
index 0000000..e379043
--- /dev/null
+++ b/server/connection.cpp
@@ -0,0 +1,99 @@
+//
+// connection.cpp
+// ~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include "connection.hpp"
+#include <vector>
+#include <boost/bind.hpp>
+#include "connection_manager.hpp"
+#include "request_handler.hpp"
+
+namespace http {
+namespace server {
+
+connection::connection(boost::asio::io_service& io_service,
+ connection_manager& manager, request_handler& handler)
+ : socket_(io_service),
+ connection_manager_(manager),
+ request_handler_(handler)
+{
+}
+
+boost::asio::ip::tcp::socket& connection::socket()
+{
+ return socket_;
+}
+
+void connection::start()
+{
+ socket_.async_read_some(boost::asio::buffer(buffer_),
+ boost::bind(&connection::handle_read, shared_from_this(),
+ boost::asio::placeholders::error,
+ boost::asio::placeholders::bytes_transferred));
+}
+
+void connection::stop()
+{
+ socket_.close();
+}
+
+void connection::handle_read(const boost::system::error_code& e,
+ std::size_t bytes_transferred)
+{
+ if (!e)
+ {
+ boost::tribool result;
+ boost::tie(result, boost::tuples::ignore) = request_parser_.parse(
+ request_, buffer_.data(), buffer_.data() + bytes_transferred);
+
+ if (result)
+ {
+ request_handler_.handle_request(request_, reply_);
+ boost::asio::async_write(socket_, reply_.to_buffers(),
+ boost::bind(&connection::handle_write, shared_from_this(),
+ boost::asio::placeholders::error));
+ }
+ else if (!result)
+ {
+ reply_ = reply::stock_reply(reply::bad_request);
+ boost::asio::async_write(socket_, reply_.to_buffers(),
+ boost::bind(&connection::handle_write, shared_from_this(),
+ boost::asio::placeholders::error));
+ }
+ else
+ {
+ socket_.async_read_some(boost::asio::buffer(buffer_),
+ boost::bind(&connection::handle_read, shared_from_this(),
+ boost::asio::placeholders::error,
+ boost::asio::placeholders::bytes_transferred));
+ }
+ }
+ else if (e != boost::asio::error::operation_aborted)
+ {
+ connection_manager_.stop(shared_from_this());
+ }
+}
+
+void connection::handle_write(const boost::system::error_code& e)
+{
+ if (!e)
+ {
+ // Initiate graceful connection closure.
+ boost::system::error_code ignored_ec;
+ socket_.shutdown(boost::asio::ip::tcp::socket::shutdown_both, ignored_ec);
+ }
+
+ if (e != boost::asio::error::operation_aborted)
+ {
+ connection_manager_.stop(shared_from_this());
+ }
+}
+
+} // namespace server
+} // namespace http
diff --git a/server/connection.hpp b/server/connection.hpp
new file mode 100644
index 0000000..35d3a1c
--- /dev/null
+++ b/server/connection.hpp
@@ -0,0 +1,83 @@
+//
+// connection.hpp
+// ~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_CONNECTION_HPP
+#define HTTP_CONNECTION_HPP
+
+#include <boost/asio.hpp>
+#include <boost/array.hpp>
+#include <boost/noncopyable.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/enable_shared_from_this.hpp>
+#include "reply.hpp"
+#include "request.hpp"
+#include "request_handler.hpp"
+#include "request_parser.hpp"
+
+namespace http {
+namespace server {
+
+class connection_manager;
+
+/// Represents a single connection from a client.
+class connection
+ : public boost::enable_shared_from_this<connection>,
+ private boost::noncopyable
+{
+public:
+ /// Construct a connection with the given io_service.
+ explicit connection(boost::asio::io_service& io_service,
+ connection_manager& manager, request_handler& handler);
+
+ /// Get the socket associated with the connection.
+ boost::asio::ip::tcp::socket& socket();
+
+ /// Start the first asynchronous operation for the connection.
+ void start();
+
+ /// Stop all asynchronous operations associated with the connection.
+ void stop();
+
+private:
+ /// Handle completion of a read operation.
+ void handle_read(const boost::system::error_code& e,
+ std::size_t bytes_transferred);
+
+ /// Handle completion of a write operation.
+ void handle_write(const boost::system::error_code& e);
+
+ /// Socket for the connection.
+ boost::asio::ip::tcp::socket socket_;
+
+ /// The manager for this connection.
+ connection_manager& connection_manager_;
+
+ /// The handler used to process the incoming request.
+ request_handler& request_handler_;
+
+ /// Buffer for incoming data.
+ boost::array<char, 8192> buffer_;
+
+ /// The incoming request.
+ request request_;
+
+ /// The parser for the incoming request.
+ request_parser request_parser_;
+
+ /// The reply to be sent back to the client.
+ reply reply_;
+};
+
+typedef boost::shared_ptr<connection> connection_ptr;
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_CONNECTION_HPP
diff --git a/server/connection_manager.cpp b/server/connection_manager.cpp
new file mode 100644
index 0000000..664d444
--- /dev/null
+++ b/server/connection_manager.cpp
@@ -0,0 +1,38 @@
+//
+// connection_manager.cpp
+// ~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include "connection_manager.hpp"
+#include <algorithm>
+#include <boost/bind.hpp>
+
+namespace http {
+namespace server {
+
+void connection_manager::start(connection_ptr c)
+{
+ connections_.insert(c);
+ c->start();
+}
+
+void connection_manager::stop(connection_ptr c)
+{
+ connections_.erase(c);
+ c->stop();
+}
+
+void connection_manager::stop_all()
+{
+ std::for_each(connections_.begin(), connections_.end(),
+ boost::bind(&connection::stop, _1));
+ connections_.clear();
+}
+
+} // namespace server
+} // namespace http
diff --git a/server/connection_manager.hpp b/server/connection_manager.hpp
new file mode 100644
index 0000000..f49ab64
--- /dev/null
+++ b/server/connection_manager.hpp
@@ -0,0 +1,44 @@
+//
+// connection_manager.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_CONNECTION_MANAGER_HPP
+#define HTTP_CONNECTION_MANAGER_HPP
+
+#include <set>
+#include <boost/noncopyable.hpp>
+#include "connection.hpp"
+
+namespace http {
+namespace server {
+
+/// Manages open connections so that they may be cleanly stopped when the server
+/// needs to shut down.
+class connection_manager
+ : private boost::noncopyable
+{
+public:
+ /// Add the specified connection to the manager and start it.
+ void start(connection_ptr c);
+
+ /// Stop the specified connection.
+ void stop(connection_ptr c);
+
+ /// Stop all connections.
+ void stop_all();
+
+private:
+ /// The managed connections.
+ std::set<connection_ptr> connections_;
+};
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_CONNECTION_MANAGER_HPP
diff --git a/server/header.hpp b/server/header.hpp
new file mode 100644
index 0000000..85bf301
--- /dev/null
+++ b/server/header.hpp
@@ -0,0 +1,28 @@
+//
+// header.hpp
+// ~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_HEADER_HPP
+#define HTTP_HEADER_HPP
+
+#include <string>
+
+namespace http {
+namespace server {
+
+struct header
+{
+ std::string name;
+ std::string value;
+};
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_HEADER_HPP
diff --git a/server/mime_types.cpp b/server/mime_types.cpp
new file mode 100644
index 0000000..d2898b2
--- /dev/null
+++ b/server/mime_types.cpp
@@ -0,0 +1,46 @@
+//
+// mime_types.cpp
+// ~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include "mime_types.hpp"
+
+namespace http {
+namespace server {
+namespace mime_types {
+
+struct mapping
+{
+ const char* extension;
+ const char* mime_type;
+} mappings[] =
+{
+ { "gif", "image/gif" },
+ { "htm", "text/html" },
+ { "html", "text/html" },
+ { "jpg", "image/jpeg" },
+ { "png", "image/png" },
+ { 0, 0 } // Marks end of list.
+};
+
+std::string extension_to_type(const std::string& extension)
+{
+ for (mapping* m = mappings; m->extension; ++m)
+ {
+ if (m->extension == extension)
+ {
+ return m->mime_type;
+ }
+ }
+
+ return "text/plain";
+}
+
+} // namespace mime_types
+} // namespace server
+} // namespace http
diff --git a/server/mime_types.hpp b/server/mime_types.hpp
new file mode 100644
index 0000000..ab55291
--- /dev/null
+++ b/server/mime_types.hpp
@@ -0,0 +1,27 @@
+//
+// mime_types.hpp
+// ~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_MIME_TYPES_HPP
+#define HTTP_MIME_TYPES_HPP
+
+#include <string>
+
+namespace http {
+namespace server {
+namespace mime_types {
+
+/// Convert a file extension into a MIME type.
+std::string extension_to_type(const std::string& extension);
+
+} // namespace mime_types
+} // namespace server
+} // namespace http
+
+#endif // HTTP_MIME_TYPES_HPP
diff --git a/server/reply.cpp b/server/reply.cpp
new file mode 100644
index 0000000..044951d
--- /dev/null
+++ b/server/reply.cpp
@@ -0,0 +1,256 @@
+//
+// reply.cpp
+// ~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include "reply.hpp"
+#include <string>
+#include <boost/lexical_cast.hpp>
+
+namespace http {
+namespace server {
+
+namespace status_strings {
+
+const std::string ok =
+ "HTTP/1.0 200 OK\r\n";
+const std::string created =
+ "HTTP/1.0 201 Created\r\n";
+const std::string accepted =
+ "HTTP/1.0 202 Accepted\r\n";
+const std::string no_content =
+ "HTTP/1.0 204 No Content\r\n";
+const std::string multiple_choices =
+ "HTTP/1.0 300 Multiple Choices\r\n";
+const std::string moved_permanently =
+ "HTTP/1.0 301 Moved Permanently\r\n";
+const std::string moved_temporarily =
+ "HTTP/1.0 302 Moved Temporarily\r\n";
+const std::string not_modified =
+ "HTTP/1.0 304 Not Modified\r\n";
+const std::string bad_request =
+ "HTTP/1.0 400 Bad Request\r\n";
+const std::string unauthorized =
+ "HTTP/1.0 401 Unauthorized\r\n";
+const std::string forbidden =
+ "HTTP/1.0 403 Forbidden\r\n";
+const std::string not_found =
+ "HTTP/1.0 404 Not Found\r\n";
+const std::string internal_server_error =
+ "HTTP/1.0 500 Internal Server Error\r\n";
+const std::string not_implemented =
+ "HTTP/1.0 501 Not Implemented\r\n";
+const std::string bad_gateway =
+ "HTTP/1.0 502 Bad Gateway\r\n";
+const std::string service_unavailable =
+ "HTTP/1.0 503 Service Unavailable\r\n";
+
+boost::asio::const_buffer to_buffer(reply::status_type status)
+{
+ switch (status)
+ {
+ case reply::ok:
+ return boost::asio::buffer(ok);
+ case reply::created:
+ return boost::asio::buffer(created);
+ case reply::accepted:
+ return boost::asio::buffer(accepted);
+ case reply::no_content:
+ return boost::asio::buffer(no_content);
+ case reply::multiple_choices:
+ return boost::asio::buffer(multiple_choices);
+ case reply::moved_permanently:
+ return boost::asio::buffer(moved_permanently);
+ case reply::moved_temporarily:
+ return boost::asio::buffer(moved_temporarily);
+ case reply::not_modified:
+ return boost::asio::buffer(not_modified);
+ case reply::bad_request:
+ return boost::asio::buffer(bad_request);
+ case reply::unauthorized:
+ return boost::asio::buffer(unauthorized);
+ case reply::forbidden:
+ return boost::asio::buffer(forbidden);
+ case reply::not_found:
+ return boost::asio::buffer(not_found);
+ case reply::internal_server_error:
+ return boost::asio::buffer(internal_server_error);
+ case reply::not_implemented:
+ return boost::asio::buffer(not_implemented);
+ case reply::bad_gateway:
+ return boost::asio::buffer(bad_gateway);
+ case reply::service_unavailable:
+ return boost::asio::buffer(service_unavailable);
+ default:
+ return boost::asio::buffer(internal_server_error);
+ }
+}
+
+} // namespace status_strings
+
+namespace misc_strings {
+
+const char name_value_separator[] = { ':', ' ' };
+const char crlf[] = { '\r', '\n' };
+
+} // namespace misc_strings
+
+std::vector<boost::asio::const_buffer> reply::to_buffers()
+{
+ std::vector<boost::asio::const_buffer> buffers;
+ buffers.push_back(status_strings::to_buffer(status));
+ for (std::size_t i = 0; i < headers.size(); ++i)
+ {
+ header& h = headers[i];
+ buffers.push_back(boost::asio::buffer(h.name));
+ buffers.push_back(boost::asio::buffer(misc_strings::name_value_separator));
+ buffers.push_back(boost::asio::buffer(h.value));
+ buffers.push_back(boost::asio::buffer(misc_strings::crlf));
+ }
+ buffers.push_back(boost::asio::buffer(misc_strings::crlf));
+ buffers.push_back(boost::asio::buffer(content));
+ return buffers;
+}
+
+namespace stock_replies {
+
+const char ok[] = "";
+const char created[] =
+ "<html>"
+ "<head><title>Created</title></head>"
+ "<body><h1>201 Created</h1></body>"
+ "</html>";
+const char accepted[] =
+ "<html>"
+ "<head><title>Accepted</title></head>"
+ "<body><h1>202 Accepted</h1></body>"
+ "</html>";
+const char no_content[] =
+ "<html>"
+ "<head><title>No Content</title></head>"
+ "<body><h1>204 Content</h1></body>"
+ "</html>";
+const char multiple_choices[] =
+ "<html>"
+ "<head><title>Multiple Choices</title></head>"
+ "<body><h1>300 Multiple Choices</h1></body>"
+ "</html>";
+const char moved_permanently[] =
+ "<html>"
+ "<head><title>Moved Permanently</title></head>"
+ "<body><h1>301 Moved Permanently</h1></body>"
+ "</html>";
+const char moved_temporarily[] =
+ "<html>"
+ "<head><title>Moved Temporarily</title></head>"
+ "<body><h1>302 Moved Temporarily</h1></body>"
+ "</html>";
+const char not_modified[] =
+ "<html>"
+ "<head><title>Not Modified</title></head>"
+ "<body><h1>304 Not Modified</h1></body>"
+ "</html>";
+const char bad_request[] =
+ "<html>"
+ "<head><title>Bad Request</title></head>"
+ "<body><h1>400 Bad Request</h1></body>"
+ "</html>";
+const char unauthorized[] =
+ "<html>"
+ "<head><title>Unauthorized</title></head>"
+ "<body><h1>401 Unauthorized</h1></body>"
+ "</html>";
+const char forbidden[] =
+ "<html>"
+ "<head><title>Forbidden</title></head>"
+ "<body><h1>403 Forbidden</h1></body>"
+ "</html>";
+const char not_found[] =
+ "<html>"
+ "<head><title>Not Found</title></head>"
+ "<body><h1>404 Not Found</h1></body>"
+ "</html>";
+const char internal_server_error[] =
+ "<html>"
+ "<head><title>Internal Server Error</title></head>"
+ "<body><h1>500 Internal Server Error</h1></body>"
+ "</html>";
+const char not_implemented[] =
+ "<html>"
+ "<head><title>Not Implemented</title></head>"
+ "<body><h1>501 Not Implemented</h1></body>"
+ "</html>";
+const char bad_gateway[] =
+ "<html>"
+ "<head><title>Bad Gateway</title></head>"
+ "<body><h1>502 Bad Gateway</h1></body>"
+ "</html>";
+const char service_unavailable[] =
+ "<html>"
+ "<head><title>Service Unavailable</title></head>"
+ "<body><h1>503 Service Unavailable</h1></body>"
+ "</html>";
+
+std::string to_string(reply::status_type status)
+{
+ switch (status)
+ {
+ case reply::ok:
+ return ok;
+ case reply::created:
+ return created;
+ case reply::accepted:
+ return accepted;
+ case reply::no_content:
+ return no_content;
+ case reply::multiple_choices:
+ return multiple_choices;
+ case reply::moved_permanently:
+ return moved_permanently;
+ case reply::moved_temporarily:
+ return moved_temporarily;
+ case reply::not_modified:
+ return not_modified;
+ case reply::bad_request:
+ return bad_request;
+ case reply::unauthorized:
+ return unauthorized;
+ case reply::forbidden:
+ return forbidden;
+ case reply::not_found:
+ return not_found;
+ case reply::internal_server_error:
+ return internal_server_error;
+ case reply::not_implemented:
+ return not_implemented;
+ case reply::bad_gateway:
+ return bad_gateway;
+ case reply::service_unavailable:
+ return service_unavailable;
+ default:
+ return internal_server_error;
+ }
+}
+
+} // namespace stock_replies
+
+reply reply::stock_reply(reply::status_type status)
+{
+ reply rep;
+ rep.status = status;
+ rep.content = stock_replies::to_string(status);
+ rep.headers.resize(2);
+ rep.headers[0].name = "Content-Length";
+ rep.headers[0].value = boost::lexical_cast<std::string>(rep.content.size());
+ rep.headers[1].name = "Content-Type";
+ rep.headers[1].value = "text/html";
+ return rep;
+}
+
+} // namespace server
+} // namespace http
diff --git a/server/reply.hpp b/server/reply.hpp
new file mode 100644
index 0000000..a0dab62
--- /dev/null
+++ b/server/reply.hpp
@@ -0,0 +1,64 @@
+//
+// reply.hpp
+// ~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_REPLY_HPP
+#define HTTP_REPLY_HPP
+
+#include <string>
+#include <vector>
+#include <boost/asio.hpp>
+#include "header.hpp"
+
+namespace http {
+namespace server {
+
+/// A reply to be sent to a client.
+struct reply
+{
+ /// The status of the reply.
+ enum status_type
+ {
+ ok = 200,
+ created = 201,
+ accepted = 202,
+ no_content = 204,
+ multiple_choices = 300,
+ moved_permanently = 301,
+ moved_temporarily = 302,
+ not_modified = 304,
+ bad_request = 400,
+ unauthorized = 401,
+ forbidden = 403,
+ not_found = 404,
+ internal_server_error = 500,
+ not_implemented = 501,
+ bad_gateway = 502,
+ service_unavailable = 503
+ } status;
+
+ /// The headers to be included in the reply.
+ std::vector<header> headers;
+
+ /// The content to be sent in the reply.
+ std::string content;
+
+ /// Convert the reply into a vector of buffers. The buffers do not own the
+ /// underlying memory blocks, therefore the reply object must remain valid and
+ /// not be changed until the write operation has completed.
+ std::vector<boost::asio::const_buffer> to_buffers();
+
+ /// Get a stock reply.
+ static reply stock_reply(status_type status);
+};
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_REPLY_HPP
diff --git a/server/request.hpp b/server/request.hpp
new file mode 100644
index 0000000..3be1021
--- /dev/null
+++ b/server/request.hpp
@@ -0,0 +1,34 @@
+//
+// request.hpp
+// ~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_REQUEST_HPP
+#define HTTP_REQUEST_HPP
+
+#include <string>
+#include <vector>
+#include "header.hpp"
+
+namespace http {
+namespace server {
+
+/// A request received from a client.
+struct request
+{
+ std::string method;
+ std::string uri;
+ int http_version_major;
+ int http_version_minor;
+ std::vector<header> headers;
+};
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_REQUEST_HPP
diff --git a/server/request_handler.cpp b/server/request_handler.cpp
new file mode 100644
index 0000000..bd1f5d2
--- /dev/null
+++ b/server/request_handler.cpp
@@ -0,0 +1,122 @@
+//
+// request_handler.cpp
+// ~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include "request_handler.hpp"
+#include <fstream>
+#include <sstream>
+#include <string>
+#include <boost/lexical_cast.hpp>
+#include "mime_types.hpp"
+#include "reply.hpp"
+#include "request.hpp"
+
+namespace http {
+namespace server {
+
+request_handler::request_handler(const std::string& doc_root)
+ : doc_root_(doc_root)
+{
+}
+
+void request_handler::handle_request(const request& req, reply& rep)
+{
+ // Decode url to path.
+ std::string request_path;
+ if (!url_decode(req.uri, request_path))
+ {
+ rep = reply::stock_reply(reply::bad_request);
+ return;
+ }
+
+ // Request path must be absolute and not contain "..".
+ if (request_path.empty() || request_path[0] != '/'
+ || request_path.find("..") != std::string::npos)
+ {
+ rep = reply::stock_reply(reply::bad_request);
+ return;
+ }
+
+ // If path ends in slash (i.e. is a directory) then add "index.html".
+ if (request_path[request_path.size() - 1] == '/')
+ {
+ request_path += "index.html";
+ }
+
+ // Determine the file extension.
+ std::size_t last_slash_pos = request_path.find_last_of("/");
+ std::size_t last_dot_pos = request_path.find_last_of(".");
+ std::string extension;
+ if (last_dot_pos != std::string::npos && last_dot_pos > last_slash_pos)
+ {
+ extension = request_path.substr(last_dot_pos + 1);
+ }
+
+ // Open the file to send back.
+ std::string full_path = doc_root_ + request_path;
+ std::ifstream is(full_path.c_str(), std::ios::in | std::ios::binary);
+ if (!is)
+ {
+ rep = reply::stock_reply(reply::not_found);
+ return;
+ }
+
+ // Fill out the reply to be sent to the client.
+ rep.status = reply::ok;
+ char buf[512];
+ while (is.read(buf, sizeof(buf)).gcount() > 0)
+ rep.content.append(buf, is.gcount());
+ rep.headers.resize(2);
+ rep.headers[0].name = "Content-Length";
+ rep.headers[0].value = boost::lexical_cast<std::string>(rep.content.size());
+ rep.headers[1].name = "Content-Type";
+ rep.headers[1].value = mime_types::extension_to_type(extension);
+}
+
+bool request_handler::url_decode(const std::string& in, std::string& out)
+{
+ out.clear();
+ out.reserve(in.size());
+ for (std::size_t i = 0; i < in.size(); ++i)
+ {
+ if (in[i] == '%')
+ {
+ if (i + 3 <= in.size())
+ {
+ int value = 0;
+ std::istringstream is(in.substr(i + 1, 2));
+ if (is >> std::hex >> value)
+ {
+ out += static_cast<char>(value);
+ i += 2;
+ }
+ else
+ {
+ return false;
+ }
+ }
+ else
+ {
+ return false;
+ }
+ }
+ else if (in[i] == '+')
+ {
+ out += ' ';
+ }
+ else
+ {
+ out += in[i];
+ }
+ }
+ return true;
+}
+
+} // namespace server
+} // namespace http
diff --git a/server/request_handler.hpp b/server/request_handler.hpp
new file mode 100644
index 0000000..661bad7
--- /dev/null
+++ b/server/request_handler.hpp
@@ -0,0 +1,46 @@
+//
+// request_handler.hpp
+// ~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_REQUEST_HANDLER_HPP
+#define HTTP_REQUEST_HANDLER_HPP
+
+#include <string>
+#include <boost/noncopyable.hpp>
+
+namespace http {
+namespace server {
+
+struct reply;
+struct request;
+
+/// The common handler for all incoming requests.
+class request_handler
+ : private boost::noncopyable
+{
+public:
+ /// Construct with a directory containing files to be served.
+ explicit request_handler(const std::string& doc_root);
+
+ /// Handle a request and produce a reply.
+ void handle_request(const request& req, reply& rep);
+
+private:
+ /// The directory containing the files to be served.
+ std::string doc_root_;
+
+ /// Perform URL-decoding on a string. Returns false if the encoding was
+ /// invalid.
+ static bool url_decode(const std::string& in, std::string& out);
+};
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_REQUEST_HANDLER_HPP
diff --git a/server/request_parser.cpp b/server/request_parser.cpp
new file mode 100644
index 0000000..b5bb9c2
--- /dev/null
+++ b/server/request_parser.cpp
@@ -0,0 +1,315 @@
+//
+// request_parser.cpp
+// ~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include "request_parser.hpp"
+#include "request.hpp"
+
+namespace http {
+namespace server {
+
+request_parser::request_parser()
+ : state_(method_start)
+{
+}
+
+void request_parser::reset()
+{
+ state_ = method_start;
+}
+
+boost::tribool request_parser::consume(request& req, char input)
+{
+ switch (state_)
+ {
+ case method_start:
+ if (!is_char(input) || is_ctl(input) || is_tspecial(input))
+ {
+ return false;
+ }
+ else
+ {
+ state_ = method;
+ req.method.push_back(input);
+ return boost::indeterminate;
+ }
+ case method:
+ if (input == ' ')
+ {
+ state_ = uri;
+ return boost::indeterminate;
+ }
+ else if (!is_char(input) || is_ctl(input) || is_tspecial(input))
+ {
+ return false;
+ }
+ else
+ {
+ req.method.push_back(input);
+ return boost::indeterminate;
+ }
+ case uri:
+ if (input == ' ')
+ {
+ state_ = http_version_h;
+ return boost::indeterminate;
+ }
+ else if (is_ctl(input))
+ {
+ return false;
+ }
+ else
+ {
+ req.uri.push_back(input);
+ return boost::indeterminate;
+ }
+ case http_version_h:
+ if (input == 'H')
+ {
+ state_ = http_version_t_1;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case http_version_t_1:
+ if (input == 'T')
+ {
+ state_ = http_version_t_2;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case http_version_t_2:
+ if (input == 'T')
+ {
+ state_ = http_version_p;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case http_version_p:
+ if (input == 'P')
+ {
+ state_ = http_version_slash;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case http_version_slash:
+ if (input == '/')
+ {
+ req.http_version_major = 0;
+ req.http_version_minor = 0;
+ state_ = http_version_major_start;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case http_version_major_start:
+ if (is_digit(input))
+ {
+ req.http_version_major = req.http_version_major * 10 + input - '0';
+ state_ = http_version_major;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case http_version_major:
+ if (input == '.')
+ {
+ state_ = http_version_minor_start;
+ return boost::indeterminate;
+ }
+ else if (is_digit(input))
+ {
+ req.http_version_major = req.http_version_major * 10 + input - '0';
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case http_version_minor_start:
+ if (is_digit(input))
+ {
+ req.http_version_minor = req.http_version_minor * 10 + input - '0';
+ state_ = http_version_minor;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case http_version_minor:
+ if (input == '\r')
+ {
+ state_ = expecting_newline_1;
+ return boost::indeterminate;
+ }
+ else if (is_digit(input))
+ {
+ req.http_version_minor = req.http_version_minor * 10 + input - '0';
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case expecting_newline_1:
+ if (input == '\n')
+ {
+ state_ = header_line_start;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case header_line_start:
+ if (input == '\r')
+ {
+ state_ = expecting_newline_3;
+ return boost::indeterminate;
+ }
+ else if (!req.headers.empty() && (input == ' ' || input == '\t'))
+ {
+ state_ = header_lws;
+ return boost::indeterminate;
+ }
+ else if (!is_char(input) || is_ctl(input) || is_tspecial(input))
+ {
+ return false;
+ }
+ else
+ {
+ req.headers.push_back(header());
+ req.headers.back().name.push_back(input);
+ state_ = header_name;
+ return boost::indeterminate;
+ }
+ case header_lws:
+ if (input == '\r')
+ {
+ state_ = expecting_newline_2;
+ return boost::indeterminate;
+ }
+ else if (input == ' ' || input == '\t')
+ {
+ return boost::indeterminate;
+ }
+ else if (is_ctl(input))
+ {
+ return false;
+ }
+ else
+ {
+ state_ = header_value;
+ req.headers.back().value.push_back(input);
+ return boost::indeterminate;
+ }
+ case header_name:
+ if (input == ':')
+ {
+ state_ = space_before_header_value;
+ return boost::indeterminate;
+ }
+ else if (!is_char(input) || is_ctl(input) || is_tspecial(input))
+ {
+ return false;
+ }
+ else
+ {
+ req.headers.back().name.push_back(input);
+ return boost::indeterminate;
+ }
+ case space_before_header_value:
+ if (input == ' ')
+ {
+ state_ = header_value;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case header_value:
+ if (input == '\r')
+ {
+ state_ = expecting_newline_2;
+ return boost::indeterminate;
+ }
+ else if (is_ctl(input))
+ {
+ return false;
+ }
+ else
+ {
+ req.headers.back().value.push_back(input);
+ return boost::indeterminate;
+ }
+ case expecting_newline_2:
+ if (input == '\n')
+ {
+ state_ = header_line_start;
+ return boost::indeterminate;
+ }
+ else
+ {
+ return false;
+ }
+ case expecting_newline_3:
+ return (input == '\n');
+ default:
+ return false;
+ }
+}
+
+bool request_parser::is_char(int c)
+{
+ return c >= 0 && c <= 127;
+}
+
+bool request_parser::is_ctl(int c)
+{
+ return (c >= 0 && c <= 31) || (c == 127);
+}
+
+bool request_parser::is_tspecial(int c)
+{
+ switch (c)
+ {
+ case '(': case ')': case '<': case '>': case '@':
+ case ',': case ';': case ':': case '\\': case '"':
+ case '/': case '[': case ']': case '?': case '=':
+ case '{': case '}': case ' ': case '\t':
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool request_parser::is_digit(int c)
+{
+ return c >= '0' && c <= '9';
+}
+
+} // namespace server
+} // namespace http
diff --git a/server/request_parser.hpp b/server/request_parser.hpp
new file mode 100644
index 0000000..506fda1
--- /dev/null
+++ b/server/request_parser.hpp
@@ -0,0 +1,95 @@
+//
+// request_parser.hpp
+// ~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_REQUEST_PARSER_HPP
+#define HTTP_REQUEST_PARSER_HPP
+
+#include <boost/logic/tribool.hpp>
+#include <boost/tuple/tuple.hpp>
+
+namespace http {
+namespace server {
+
+struct request;
+
+/// Parser for incoming requests.
+class request_parser
+{
+public:
+ /// Construct ready to parse the request method.
+ request_parser();
+
+ /// Reset to initial parser state.
+ void reset();
+
+ /// Parse some data. The tribool return value is true when a complete request
+ /// has been parsed, false if the data is invalid, indeterminate when more
+ /// data is required. The InputIterator return value indicates how much of the
+ /// input has been consumed.
+ template <typename InputIterator>
+ boost::tuple<boost::tribool, InputIterator> parse(request& req,
+ InputIterator begin, InputIterator end)
+ {
+ while (begin != end)
+ {
+ boost::tribool result = consume(req, *begin++);
+ if (result || !result)
+ return boost::make_tuple(result, begin);
+ }
+ boost::tribool result = boost::indeterminate;
+ return boost::make_tuple(result, begin);
+ }
+
+private:
+ /// Handle the next character of input.
+ boost::tribool consume(request& req, char input);
+
+ /// Check if a byte is an HTTP character.
+ static bool is_char(int c);
+
+ /// Check if a byte is an HTTP control character.
+ static bool is_ctl(int c);
+
+ /// Check if a byte is defined as an HTTP tspecial character.
+ static bool is_tspecial(int c);
+
+ /// Check if a byte is a digit.
+ static bool is_digit(int c);
+
+ /// The current state of the parser.
+ enum state
+ {
+ method_start,
+ method,
+ uri,
+ http_version_h,
+ http_version_t_1,
+ http_version_t_2,
+ http_version_p,
+ http_version_slash,
+ http_version_major_start,
+ http_version_major,
+ http_version_minor_start,
+ http_version_minor,
+ expecting_newline_1,
+ header_line_start,
+ header_lws,
+ header_name,
+ space_before_header_value,
+ header_value,
+ expecting_newline_2,
+ expecting_newline_3
+ } state_;
+};
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_REQUEST_PARSER_HPP
diff --git a/server/server.cpp b/server/server.cpp
new file mode 100644
index 0000000..5fcc5d9
--- /dev/null
+++ b/server/server.cpp
@@ -0,0 +1,94 @@
+//
+// server.cpp
+// ~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include "server.hpp"
+#include <boost/bind.hpp>
+#include <signal.h>
+
+namespace http {
+namespace server {
+
+server::server(const std::string& address, const std::string& port,
+ const std::string& doc_root)
+ : io_service_(),
+ signals_(io_service_),
+ acceptor_(io_service_),
+ connection_manager_(),
+ new_connection_(),
+ request_handler_(doc_root)
+{
+ // Register to handle the signals that indicate when the server should exit.
+ // It is safe to register for the same signal multiple times in a program,
+ // provided all registration for the specified signal is made through Asio.
+ signals_.add(SIGINT);
+ signals_.add(SIGTERM);
+#if defined(SIGQUIT)
+ signals_.add(SIGQUIT);
+#endif // defined(SIGQUIT)
+ signals_.async_wait(boost::bind(&server::handle_stop, this));
+
+ // Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
+ boost::asio::ip::tcp::resolver resolver(io_service_);
+ boost::asio::ip::tcp::resolver::query query(address, port);
+ boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
+ acceptor_.open(endpoint.protocol());
+ acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
+ acceptor_.bind(endpoint);
+ acceptor_.listen();
+
+ start_accept();
+}
+
+void server::run()
+{
+ // The io_service::run() call will block until all asynchronous operations
+ // have finished. While the server is running, there is always at least one
+ // asynchronous operation outstanding: the asynchronous accept call waiting
+ // for new incoming connections.
+ io_service_.run();
+}
+
+void server::start_accept()
+{
+ new_connection_.reset(new connection(io_service_,
+ connection_manager_, request_handler_));
+ acceptor_.async_accept(new_connection_->socket(),
+ boost::bind(&server::handle_accept, this,
+ boost::asio::placeholders::error));
+}
+
+void server::handle_accept(const boost::system::error_code& e)
+{
+ // Check whether the server was stopped by a signal before this completion
+ // handler had a chance to run.
+ if (!acceptor_.is_open())
+ {
+ return;
+ }
+
+ if (!e)
+ {
+ connection_manager_.start(new_connection_);
+ }
+
+ start_accept();
+}
+
+void server::handle_stop()
+{
+ // The server is stopped by cancelling all outstanding asynchronous
+ // operations. Once all operations have finished the io_service::run() call
+ // will exit.
+ acceptor_.close();
+ connection_manager_.stop_all();
+}
+
+} // namespace server
+} // namespace http
diff --git a/server/server.hpp b/server/server.hpp
new file mode 100644
index 0000000..0cb3476
--- /dev/null
+++ b/server/server.hpp
@@ -0,0 +1,69 @@
+//
+// server.hpp
+// ~~~~~~~~~~
+//
+// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef HTTP_SERVER_HPP
+#define HTTP_SERVER_HPP
+
+#include <boost/asio.hpp>
+#include <string>
+#include <boost/noncopyable.hpp>
+#include "connection.hpp"
+#include "connection_manager.hpp"
+#include "request_handler.hpp"
+
+namespace http {
+namespace server {
+
+/// The top-level class of the HTTP server.
+class server
+ : private boost::noncopyable
+{
+public:
+ /// Construct the server to listen on the specified TCP address and port, and
+ /// serve up files from the given directory.
+ explicit server(const std::string& address, const std::string& port,
+ const std::string& doc_root);
+
+ /// Run the server's io_service loop.
+ void run();
+
+private:
+ /// Initiate an asynchronous accept operation.
+ void start_accept();
+
+ /// Handle completion of an asynchronous accept operation.
+ void handle_accept(const boost::system::error_code& e);
+
+ /// Handle a request to stop the server.
+ void handle_stop();
+
+ /// The io_service used to perform asynchronous operations.
+ boost::asio::io_service io_service_;
+
+ /// The signal_set is used to register for process termination notifications.
+ boost::asio::signal_set signals_;
+
+ /// Acceptor used to listen for incoming connections.
+ boost::asio::ip::tcp::acceptor acceptor_;
+
+ /// The connection manager which owns all live connections.
+ connection_manager connection_manager_;
+
+ /// The next connection to be accepted.
+ connection_ptr new_connection_;
+
+ /// The handler for all incoming requests.
+ request_handler request_handler_;
+};
+
+} // namespace server
+} // namespace http
+
+#endif // HTTP_SERVER_HPP