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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_BASE_SOCKET_H__
#define WEBRTC_BASE_SOCKET_H__
#include <errno.h>
#if defined(WEBRTC_POSIX)
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#define SOCKET_EACCES EACCES
#endif
#if defined(WEBRTC_WIN)
#include "webrtc/base/win32.h"
#endif
#include "webrtc/base/basictypes.h"
#include "webrtc/base/constructormagic.h"
#include "webrtc/base/socketaddress.h"
// Rather than converting errors into a private namespace,
// Reuse the POSIX socket api errors. Note this depends on
// Win32 compatibility.
#if defined(WEBRTC_WIN)
#undef EWOULDBLOCK // Remove errno.h's definition for each macro below.
#define EWOULDBLOCK WSAEWOULDBLOCK
#undef EINPROGRESS
#define EINPROGRESS WSAEINPROGRESS
#undef EALREADY
#define EALREADY WSAEALREADY
#undef ENOTSOCK
#define ENOTSOCK WSAENOTSOCK
#undef EDESTADDRREQ
#define EDESTADDRREQ WSAEDESTADDRREQ
#undef EMSGSIZE
#define EMSGSIZE WSAEMSGSIZE
#undef EPROTOTYPE
#define EPROTOTYPE WSAEPROTOTYPE
#undef ENOPROTOOPT
#define ENOPROTOOPT WSAENOPROTOOPT
#undef EPROTONOSUPPORT
#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
#undef ESOCKTNOSUPPORT
#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
#undef EOPNOTSUPP
#define EOPNOTSUPP WSAEOPNOTSUPP
#undef EPFNOSUPPORT
#define EPFNOSUPPORT WSAEPFNOSUPPORT
#undef EAFNOSUPPORT
#define EAFNOSUPPORT WSAEAFNOSUPPORT
#undef EADDRINUSE
#define EADDRINUSE WSAEADDRINUSE
#undef EADDRNOTAVAIL
#define EADDRNOTAVAIL WSAEADDRNOTAVAIL
#undef ENETDOWN
#define ENETDOWN WSAENETDOWN
#undef ENETUNREACH
#define ENETUNREACH WSAENETUNREACH
#undef ENETRESET
#define ENETRESET WSAENETRESET
#undef ECONNABORTED
#define ECONNABORTED WSAECONNABORTED
#undef ECONNRESET
#define ECONNRESET WSAECONNRESET
#undef ENOBUFS
#define ENOBUFS WSAENOBUFS
#undef EISCONN
#define EISCONN WSAEISCONN
#undef ENOTCONN
#define ENOTCONN WSAENOTCONN
#undef ESHUTDOWN
#define ESHUTDOWN WSAESHUTDOWN
#undef ETOOMANYREFS
#define ETOOMANYREFS WSAETOOMANYREFS
#undef ETIMEDOUT
#define ETIMEDOUT WSAETIMEDOUT
#undef ECONNREFUSED
#define ECONNREFUSED WSAECONNREFUSED
#undef ELOOP
#define ELOOP WSAELOOP
#undef ENAMETOOLONG
#define ENAMETOOLONG WSAENAMETOOLONG
#undef EHOSTDOWN
#define EHOSTDOWN WSAEHOSTDOWN
#undef EHOSTUNREACH
#define EHOSTUNREACH WSAEHOSTUNREACH
#undef ENOTEMPTY
#define ENOTEMPTY WSAENOTEMPTY
#undef EPROCLIM
#define EPROCLIM WSAEPROCLIM
#undef EUSERS
#define EUSERS WSAEUSERS
#undef EDQUOT
#define EDQUOT WSAEDQUOT
#undef ESTALE
#define ESTALE WSAESTALE
#undef EREMOTE
#define EREMOTE WSAEREMOTE
#undef EACCES
#define SOCKET_EACCES WSAEACCES
#endif // WEBRTC_WIN
#if defined(WEBRTC_POSIX)
#define INVALID_SOCKET (-1)
#define SOCKET_ERROR (-1)
#define closesocket(s) close(s)
#endif // WEBRTC_POSIX
namespace rtc {
inline bool IsBlockingError(int e) {
return (e == EWOULDBLOCK) || (e == EAGAIN) || (e == EINPROGRESS);
}
struct SentPacket {
SentPacket() : packet_id(-1), send_time_ms(-1) {}
SentPacket(int packet_id, int64_t send_time_ms)
: packet_id(packet_id), send_time_ms(send_time_ms) {}
int packet_id;
int64_t send_time_ms;
};
// General interface for the socket implementations of various networks. The
// methods match those of normal UNIX sockets very closely.
class Socket {
public:
virtual ~Socket() {}
// Returns the address to which the socket is bound. If the socket is not
// bound, then the any-address is returned.
virtual SocketAddress GetLocalAddress() const = 0;
// Returns the address to which the socket is connected. If the socket is
// not connected, then the any-address is returned.
virtual SocketAddress GetRemoteAddress() const = 0;
virtual int Bind(const SocketAddress& addr) = 0;
virtual int Connect(const SocketAddress& addr) = 0;
virtual int Send(const void *pv, size_t cb) = 0;
virtual int SendTo(const void *pv, size_t cb, const SocketAddress& addr) = 0;
virtual int Recv(void *pv, size_t cb) = 0;
virtual int RecvFrom(void *pv, size_t cb, SocketAddress *paddr) = 0;
virtual int Listen(int backlog) = 0;
virtual Socket *Accept(SocketAddress *paddr) = 0;
virtual int Close() = 0;
virtual int GetError() const = 0;
virtual void SetError(int error) = 0;
inline bool IsBlocking() const { return IsBlockingError(GetError()); }
enum ConnState {
CS_CLOSED,
CS_CONNECTING,
CS_CONNECTED
};
virtual ConnState GetState() const = 0;
// Fills in the given uint16_t with the current estimate of the MTU along the
// path to the address to which this socket is connected. NOTE: This method
// can block for up to 10 seconds on Windows.
virtual int EstimateMTU(uint16_t* mtu) = 0;
enum Option {
OPT_DONTFRAGMENT,
OPT_RCVBUF, // receive buffer size
OPT_SNDBUF, // send buffer size
OPT_NODELAY, // whether Nagle algorithm is enabled
OPT_IPV6_V6ONLY, // Whether the socket is IPv6 only.
OPT_DSCP, // DSCP code
OPT_RTP_SENDTIME_EXTN_ID, // This is a non-traditional socket option param.
// This is specific to libjingle and will be used
// if SendTime option is needed at socket level.
};
virtual int GetOption(Option opt, int* value) = 0;
virtual int SetOption(Option opt, int value) = 0;
protected:
Socket() {}
private:
RTC_DISALLOW_COPY_AND_ASSIGN(Socket);
};
} // namespace rtc
#endif // WEBRTC_BASE_SOCKET_H__
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