sergeyu@chromium.org | 19da465 | 2013-11-13 22:48:52 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2013, Google Inc. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 19 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifndef TALK_BASE_ASYNCRESOLVERINTERFACE_H_ |
| 29 | #define TALK_BASE_ASYNCRESOLVERINTERFACE_H_ |
| 30 | |
| 31 | #include "talk/base/sigslot.h" |
| 32 | #include "talk/base/socketaddress.h" |
| 33 | |
| 34 | namespace talk_base { |
| 35 | |
| 36 | // This interface defines the methods to resolve the address asynchronously. |
| 37 | class AsyncResolverInterface { |
| 38 | public: |
| 39 | AsyncResolverInterface() {} |
| 40 | virtual ~AsyncResolverInterface() {} |
| 41 | |
| 42 | // Start address resolve process. |
| 43 | virtual void Start(const SocketAddress& addr) = 0; |
| 44 | // Returns top most resolved address of |family| |
| 45 | virtual bool GetResolvedAddress(int family, SocketAddress* addr) const = 0; |
| 46 | // Returns error from resolver. |
| 47 | virtual int GetError() const = 0; |
| 48 | // Delete the resolver. |
| 49 | virtual void Destroy(bool wait) = 0; |
| 50 | // Returns top most resolved IPv4 address if address is resolved successfully. |
| 51 | // Otherwise returns address set in SetAddress. |
| 52 | SocketAddress address() const { |
| 53 | SocketAddress addr; |
| 54 | GetResolvedAddress(AF_INET, &addr); |
| 55 | return addr; |
| 56 | } |
| 57 | |
| 58 | // This signal is fired when address resolve process is completed. |
| 59 | sigslot::signal1<AsyncResolverInterface*> SignalDone; |
| 60 | }; |
| 61 | |
| 62 | } // namespace talk_base |
| 63 | |
| 64 | #endif |