154 lines
4.3 KiB
C++
154 lines
4.3 KiB
C++
/*
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* Copyright 2011 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_EXAMPLES_PEERCONNECTION_SERVER_DATA_SOCKET_H_
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#define WEBRTC_EXAMPLES_PEERCONNECTION_SERVER_DATA_SOCKET_H_
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#pragma once
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#ifdef WIN32
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#include <winsock2.h>
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typedef int socklen_t;
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typedef SOCKET NativeSocket;
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#else
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#include <netinet/in.h>
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#include <sys/select.h>
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#include <sys/socket.h>
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#define closesocket close
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typedef int NativeSocket;
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#ifndef SOCKET_ERROR
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#define SOCKET_ERROR (-1)
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#endif
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#ifndef INVALID_SOCKET
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#define INVALID_SOCKET static_cast<NativeSocket>(-1)
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#endif
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#endif
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#include <string>
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class SocketBase {
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public:
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SocketBase() : socket_(INVALID_SOCKET) { }
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explicit SocketBase(NativeSocket socket) : socket_(socket) { }
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~SocketBase() { Close(); }
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NativeSocket socket() const { return socket_; }
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bool valid() const { return socket_ != INVALID_SOCKET; }
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bool Create();
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void Close();
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protected:
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NativeSocket socket_;
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};
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// Represents an HTTP server socket.
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class DataSocket : public SocketBase {
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public:
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enum RequestMethod {
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INVALID,
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GET,
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POST,
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OPTIONS,
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};
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explicit DataSocket(NativeSocket socket)
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: SocketBase(socket),
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method_(INVALID),
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content_length_(0) {
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}
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~DataSocket() {
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}
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static const char kCrossOriginAllowHeaders[];
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bool headers_received() const { return method_ != INVALID; }
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RequestMethod method() const { return method_; }
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const std::string& request_path() const { return request_path_; }
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std::string request_arguments() const;
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const std::string& data() const { return data_; }
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const std::string& content_type() const { return content_type_; }
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size_t content_length() const { return content_length_; }
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bool request_received() const {
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return headers_received() && (method_ != POST || data_received());
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}
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bool data_received() const {
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return method_ != POST || data_.length() >= content_length_;
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}
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// Checks if the request path (minus arguments) matches a given path.
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bool PathEquals(const char* path) const;
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// Called when we have received some data from clients.
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// Returns false if an error occurred.
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bool OnDataAvailable(bool* close_socket);
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// Send a raw buffer of bytes.
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bool Send(const std::string& data) const;
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// Send an HTTP response. The |status| should start with a valid HTTP
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// response code, followed by a string. E.g. "200 OK".
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// If |connection_close| is set to true, an extra "Connection: close" HTTP
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// header will be included. |content_type| is the mime content type, not
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// including the "Content-Type: " string.
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// |extra_headers| should be either empty or a list of headers where each
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// header terminates with "\r\n".
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// |data| is the body of the message. It's length will be specified via
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// a "Content-Length" header.
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bool Send(const std::string& status, bool connection_close,
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const std::string& content_type,
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const std::string& extra_headers, const std::string& data) const;
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// Clears all held state and prepares the socket for receiving a new request.
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void Clear();
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protected:
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// A fairly relaxed HTTP header parser. Parses the method, path and
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// content length (POST only) of a request.
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// Returns true if a valid request was received and no errors occurred.
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bool ParseHeaders();
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// Figures out whether the request is a GET or POST and what path is
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// being requested.
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bool ParseMethodAndPath(const char* begin, size_t len);
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// Determines the length of the body and it's mime type.
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bool ParseContentLengthAndType(const char* headers, size_t length);
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protected:
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RequestMethod method_;
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size_t content_length_;
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std::string content_type_;
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std::string request_path_;
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std::string request_headers_;
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std::string data_;
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};
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// The server socket. Accepts connections and generates DataSocket instances
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// for each new connection.
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class ListeningSocket : public SocketBase {
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public:
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ListeningSocket() {}
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bool Listen(unsigned short port);
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DataSocket* Accept() const;
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};
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#endif // WEBRTC_EXAMPLES_PEERCONNECTION_SERVER_DATA_SOCKET_H_
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