Revert 6107 "Adds a modified copy of talk/base to webrtc/base. I..."
This breaks Chromium FYI builds and prevent roll of webrtc/libjingle to Chrome. http://chromegw.corp.google.com/i/chromium.webrtc.fyi/builders/Win%20Builder/builds/457 > Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base. > > BUG=N/A > R=andrew@webrtc.org, wu@webrtc.org > > Review URL: https://webrtc-codereview.appspot.com/12199004 TBR=henrike@webrtc.org Review URL: https://webrtc-codereview.appspot.com/14479004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6116 4adac7df-926f-26a2-2b94-8c16560cd09d
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/*
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* Copyright 2004 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_BASE_ASYNCPACKETSOCKET_H_
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#define WEBRTC_BASE_ASYNCPACKETSOCKET_H_
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#include "webrtc/base/dscp.h"
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#include "webrtc/base/sigslot.h"
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#include "webrtc/base/socket.h"
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#include "webrtc/base/timeutils.h"
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namespace rtc {
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// This structure holds the info needed to update the packet send time header
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// extension, including the information needed to update the authentication tag
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// after changing the value.
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struct PacketTimeUpdateParams {
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PacketTimeUpdateParams()
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: rtp_sendtime_extension_id(-1), srtp_auth_tag_len(-1),
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srtp_packet_index(-1) {
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}
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int rtp_sendtime_extension_id; // extension header id present in packet.
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std::vector<char> srtp_auth_key; // Authentication key.
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int srtp_auth_tag_len; // Authentication tag length.
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int64 srtp_packet_index; // Required for Rtp Packet authentication.
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};
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// This structure holds meta information for the packet which is about to send
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// over network.
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struct PacketOptions {
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PacketOptions() : dscp(DSCP_NO_CHANGE) {}
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explicit PacketOptions(DiffServCodePoint dscp) : dscp(dscp) {}
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DiffServCodePoint dscp;
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PacketTimeUpdateParams packet_time_params;
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};
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// This structure will have the information about when packet is actually
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// received by socket.
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struct PacketTime {
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PacketTime() : timestamp(-1), not_before(-1) {}
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PacketTime(int64 timestamp, int64 not_before)
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: timestamp(timestamp), not_before(not_before) {
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}
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int64 timestamp; // Receive time after socket delivers the data.
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int64 not_before; // Earliest possible time the data could have arrived,
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// indicating the potential error in the |timestamp| value,
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// in case the system, is busy. For example, the time of
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// the last select() call.
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// If unknown, this value will be set to zero.
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};
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inline PacketTime CreatePacketTime(int64 not_before) {
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return PacketTime(TimeMicros(), not_before);
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}
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// Provides the ability to receive packets asynchronously. Sends are not
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// buffered since it is acceptable to drop packets under high load.
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class AsyncPacketSocket : public sigslot::has_slots<> {
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public:
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enum State {
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STATE_CLOSED,
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STATE_BINDING,
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STATE_BOUND,
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STATE_CONNECTING,
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STATE_CONNECTED
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};
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AsyncPacketSocket() { }
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virtual ~AsyncPacketSocket() { }
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// Returns current local address. Address may be set to NULL if the
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// socket is not bound yet (GetState() returns STATE_BINDING).
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virtual SocketAddress GetLocalAddress() const = 0;
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// Returns remote address. Returns zeroes if this is not a client TCP socket.
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virtual SocketAddress GetRemoteAddress() const = 0;
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// Send a packet.
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virtual int Send(const void *pv, size_t cb, const PacketOptions& options) = 0;
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virtual int SendTo(const void *pv, size_t cb, const SocketAddress& addr,
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const PacketOptions& options) = 0;
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// Close the socket.
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virtual int Close() = 0;
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// Returns current state of the socket.
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virtual State GetState() const = 0;
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// Get/set options.
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virtual int GetOption(Socket::Option opt, int* value) = 0;
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virtual int SetOption(Socket::Option opt, int value) = 0;
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// Get/Set current error.
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// TODO: Remove SetError().
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virtual int GetError() const = 0;
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virtual void SetError(int error) = 0;
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// Emitted each time a packet is read. Used only for UDP and
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// connected TCP sockets.
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sigslot::signal5<AsyncPacketSocket*, const char*, size_t,
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const SocketAddress&,
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const PacketTime&> SignalReadPacket;
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// Emitted when the socket is currently able to send.
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sigslot::signal1<AsyncPacketSocket*> SignalReadyToSend;
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// Emitted after address for the socket is allocated, i.e. binding
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// is finished. State of the socket is changed from BINDING to BOUND
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// (for UDP and server TCP sockets) or CONNECTING (for client TCP
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// sockets).
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sigslot::signal2<AsyncPacketSocket*, const SocketAddress&> SignalAddressReady;
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// Emitted for client TCP sockets when state is changed from
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// CONNECTING to CONNECTED.
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sigslot::signal1<AsyncPacketSocket*> SignalConnect;
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// Emitted for client TCP sockets when state is changed from
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// CONNECTED to CLOSED.
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sigslot::signal2<AsyncPacketSocket*, int> SignalClose;
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// Used only for listening TCP sockets.
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sigslot::signal2<AsyncPacketSocket*, AsyncPacketSocket*> SignalNewConnection;
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private:
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DISALLOW_EVIL_CONSTRUCTORS(AsyncPacketSocket);
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};
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} // namespace rtc
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#endif // WEBRTC_BASE_ASYNCPACKETSOCKET_H_
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