1 /* 2 * libjingle 3 * Copyright 2008, 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_NETHELPERS_H_ 29 #define TALK_BASE_NETHELPERS_H_ 30 31 #ifdef POSIX 32 #include <netdb.h> 33 #include <stddef.h> 34 #elif WIN32 35 #include <winsock2.h> // NOLINT 36 #endif 37 38 #include <list> 39 40 #include "talk/base/asyncresolverinterface.h" 41 #include "talk/base/signalthread.h" 42 #include "talk/base/sigslot.h" 43 #include "talk/base/socketaddress.h" 44 45 namespace talk_base { 46 47 class AsyncResolverTest; 48 49 // AsyncResolver will perform async DNS resolution, signaling the result on 50 // the SignalDone from AsyncResolverInterface when the operation completes. 51 class AsyncResolver : public SignalThread, public AsyncResolverInterface { 52 public: 53 AsyncResolver(); ~AsyncResolver()54 virtual ~AsyncResolver() {} 55 56 virtual void Start(const SocketAddress& addr); 57 virtual bool GetResolvedAddress(int family, SocketAddress* addr) const; GetError()58 virtual int GetError() const { return error_; } Destroy(bool wait)59 virtual void Destroy(bool wait) { SignalThread::Destroy(wait); } 60 addresses()61 const std::vector<IPAddress>& addresses() const { return addresses_; } set_error(int error)62 void set_error(int error) { error_ = error; } 63 64 protected: 65 virtual void DoWork(); 66 virtual void OnWorkDone(); 67 68 private: 69 SocketAddress addr_; 70 std::vector<IPAddress> addresses_; 71 int error_; 72 }; 73 74 // talk_base namespaced wrappers for inet_ntop and inet_pton so we can avoid 75 // the windows-native versions of these. 76 const char* inet_ntop(int af, const void *src, char* dst, socklen_t size); 77 int inet_pton(int af, const char* src, void *dst); 78 79 bool HasIPv6Enabled(); 80 } // namespace talk_base 81 82 #endif // TALK_BASE_NETHELPERS_H_ 83