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| 1 // Copyright 2015 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 REMOTING_PROTOCOL_P2P_DATAGRAM_SOCKET_H_ |
| 6 #define REMOTING_PROTOCOL_P2P_DATAGRAM_SOCKET_H_ |
| 7 |
| 8 #include "net/base/completion_callback.h" |
| 9 |
| 10 namespace net { |
| 11 class IOBuffer; |
| 12 } // namespace net |
| 13 |
| 14 namespace remoting { |
| 15 namespace protocol { |
| 16 |
| 17 // Peer-to-peer socket with datagram semantics. |
| 18 class P2PDatagramSocket { |
| 19 public: |
| 20 virtual ~P2PDatagramSocket() {}; |
| 21 |
| 22 // Receives a packet, up to |buf_len| bytes, from the socket. Size of the |
| 23 // incoming packet is returned in case of success. If the packet is larger |
| 24 // than |buf_len| then it is truncated, i.e. only the first |buf_len| bytes |
| 25 // are stored in the buffer. In case of failure a net error code is returned. |
| 26 // ERR_IO_PENDING is returned if the operation could not be completed |
| 27 // synchronously, in which case the result will be passed to the callback when |
| 28 // available. If the operation is not completed immediately, the socket |
| 29 // acquires a reference to the provided buffer until the callback is invoked |
| 30 // or the socket is closed. If the socket is destroyed before the read |
| 31 // completes, the callback will not be invoked. |
| 32 virtual int Recv(const scoped_refptr<net::IOBuffer>& buf, int buf_len, |
| 33 const net::CompletionCallback& callback) = 0; |
| 34 |
| 35 // Sends a packet. Returns |buf_len| to indicate success, otherwise a net |
| 36 // error code is returned. ERR_IO_PENDING is returned if the operation could |
| 37 // not be completed synchronously, in which case the result will be passed to |
| 38 // the callback when available. If the operation is not completed immediately, |
| 39 // the socket acquires a reference to the provided buffer until the callback |
| 40 // is invoked or the socket is closed. Implementations of this method should |
| 41 // not modify the contents of the actual buffer that is written to the socket. |
| 42 virtual int Send(const scoped_refptr<net::IOBuffer>& buf, int buf_len, |
| 43 const net::CompletionCallback& callback) = 0; |
| 44 }; |
| 45 |
| 46 } // namespace protocol |
| 47 } // namespace remoting |
| 48 |
| 49 #endif // REMOTING_PROTOCOL_P2P_DATAGRAM_SOCKET_H_ |
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