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      1 /*
      2  * libjingle
      3  * Copyright 2004--2005, 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 #include "talk/base/testclient.h"
     29 #include "talk/base/thread.h"
     30 #include "talk/base/timeutils.h"
     31 
     32 namespace talk_base {
     33 
     34 // DESIGN: Each packet received is put it into a list of packets.
     35 //         Callers can retrieve received packets from any thread by calling
     36 //         NextPacket.
     37 
     38 TestClient::TestClient(AsyncPacketSocket* socket)
     39     : socket_(socket), ready_to_send_(false) {
     40   packets_ = new std::vector<Packet*>();
     41   socket_->SignalReadPacket.connect(this, &TestClient::OnPacket);
     42   socket_->SignalReadyToSend.connect(this, &TestClient::OnReadyToSend);
     43 }
     44 
     45 TestClient::~TestClient() {
     46   delete socket_;
     47   for (unsigned i = 0; i < packets_->size(); i++)
     48     delete (*packets_)[i];
     49   delete packets_;
     50 }
     51 
     52 bool TestClient::CheckConnState(AsyncPacketSocket::State state) {
     53   // Wait for our timeout value until the socket reaches the desired state.
     54   uint32 end = TimeAfter(kTimeout);
     55   while (socket_->GetState() != state && TimeUntil(end) > 0)
     56     Thread::Current()->ProcessMessages(1);
     57   return (socket_->GetState() == state);
     58 }
     59 
     60 int TestClient::Send(const char* buf, size_t size) {
     61   talk_base::PacketOptions options;
     62   return socket_->Send(buf, size, options);
     63 }
     64 
     65 int TestClient::SendTo(const char* buf, size_t size,
     66                        const SocketAddress& dest) {
     67   talk_base::PacketOptions options;
     68   return socket_->SendTo(buf, size, dest, options);
     69 }
     70 
     71 TestClient::Packet* TestClient::NextPacket() {
     72   // If no packets are currently available, we go into a get/dispatch loop for
     73   // at most 1 second.  If, during the loop, a packet arrives, then we can stop
     74   // early and return it.
     75 
     76   // Note that the case where no packet arrives is important.  We often want to
     77   // test that a packet does not arrive.
     78 
     79   // Note also that we only try to pump our current thread's message queue.
     80   // Pumping another thread's queue could lead to messages being dispatched from
     81   // the wrong thread to non-thread-safe objects.
     82 
     83   uint32 end = TimeAfter(kTimeout);
     84   while (TimeUntil(end) > 0) {
     85     {
     86       CritScope cs(&crit_);
     87       if (packets_->size() != 0) {
     88         break;
     89       }
     90     }
     91     Thread::Current()->ProcessMessages(1);
     92   }
     93 
     94   // Return the first packet placed in the queue.
     95   Packet* packet = NULL;
     96   CritScope cs(&crit_);
     97   if (packets_->size() > 0) {
     98     packet = packets_->front();
     99     packets_->erase(packets_->begin());
    100   }
    101 
    102   return packet;
    103 }
    104 
    105 bool TestClient::CheckNextPacket(const char* buf, size_t size,
    106                                  SocketAddress* addr) {
    107   bool res = false;
    108   Packet* packet = NextPacket();
    109   if (packet) {
    110     res = (packet->size == size && memcmp(packet->buf, buf, size) == 0);
    111     if (addr)
    112       *addr = packet->addr;
    113     delete packet;
    114   }
    115   return res;
    116 }
    117 
    118 bool TestClient::CheckNoPacket() {
    119   bool res;
    120   Packet* packet = NextPacket();
    121   res = (packet == NULL);
    122   delete packet;
    123   return res;
    124 }
    125 
    126 int TestClient::GetError() {
    127   return socket_->GetError();
    128 }
    129 
    130 int TestClient::SetOption(Socket::Option opt, int value) {
    131   return socket_->SetOption(opt, value);
    132 }
    133 
    134 bool TestClient::ready_to_send() const {
    135   return ready_to_send_;
    136 }
    137 
    138 void TestClient::OnPacket(AsyncPacketSocket* socket, const char* buf,
    139                           size_t size, const SocketAddress& remote_addr,
    140                           const PacketTime& packet_time) {
    141   CritScope cs(&crit_);
    142   packets_->push_back(new Packet(remote_addr, buf, size));
    143 }
    144 
    145 void TestClient::OnReadyToSend(AsyncPacketSocket* socket) {
    146   ready_to_send_ = true;
    147 }
    148 
    149 TestClient::Packet::Packet(const SocketAddress& a, const char* b, size_t s)
    150     : addr(a), buf(0), size(s) {
    151   buf = new char[size];
    152   memcpy(buf, b, size);
    153 }
    154 
    155 TestClient::Packet::Packet(const Packet& p)
    156     : addr(p.addr), buf(0), size(p.size) {
    157   buf = new char[size];
    158   memcpy(buf, p.buf, size);
    159 }
    160 
    161 TestClient::Packet::~Packet() {
    162   delete[] buf;
    163 }
    164 
    165 }  // namespace talk_base
    166