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#include <string>
#include <cstring>
#include <iostream>
#include <cassert>
#include "talk/base/natserver.h"
#include "talk/base/testclient.h"
#include "talk/base/physicalsocketserver.h"
#include "talk/base/virtualsocketserver.h"
#include "talk/base/natsocketfactory.h"
#include "talk/base/host.h"
#ifdef POSIX
extern "C" {
#include <errno.h>
}
#endif // POSIX
using namespace talk_base;
#define CHECK(arg) Check(arg, #arg)
void Check(int result, const char* desc) {
if (result < 0) {
std::cerr << desc << ": " << std::strerror(errno) << std::endl;
exit(1);
}
}
void CheckTest(bool act_val, bool exp_val, std::string desc) {
if (act_val && !exp_val) {
std::cerr << "error: " << desc << " was true, expected false" << std::endl;
exit(1);
} else if (!act_val && exp_val) {
std::cerr << "error: " << desc << " was false, expected true" << std::endl;
exit(1);
}
}
void CheckReceive(
TestClient* client, bool should_receive, const char* buf, size_t size) {
if (should_receive)
client->CheckNextPacket(buf, size, 0);
else
client->CheckNoPacket();
}
TestClient* CreateTestClient(
SocketFactory* factory, const SocketAddress& local_addr) {
AsyncUDPSocket* socket = CreateAsyncUDPSocket(factory);
CHECK(socket->Bind(local_addr));
return new TestClient(socket);
}
void TestNATPorts(
SocketServer* internal, const SocketAddress& internal_addr,
SocketServer* external, const SocketAddress external_addrs[4],
NATType nat_type, bool exp_same) {
Thread th_int(internal);
Thread th_ext(external);
SocketAddress server_addr = internal_addr;
server_addr.SetPort(NAT_SERVER_PORT);
NATServer* nat = new NATServer(
nat_type, internal, server_addr, external, external_addrs[0]);
NATSocketFactory* natsf = new NATSocketFactory(internal, server_addr);
TestClient* in = CreateTestClient(natsf, internal_addr);
TestClient* out[4];
for (int i = 0; i < 4; i++)
out[i] = CreateTestClient(external, external_addrs[i]);
th_int.Start();
th_ext.Start();
const char* buf = "filter_test";
size_t len = strlen(buf);
in->SendTo(buf, len, external_addrs[0]);
SocketAddress trans_addr;
out[0]->CheckNextPacket(buf, len, &trans_addr);
for (int i = 1; i < 4; i++) {
in->SendTo(buf, len, external_addrs[i]);
SocketAddress trans_addr2;
out[i]->CheckNextPacket(buf, len, &trans_addr2);
bool are_same = (trans_addr == trans_addr2);
CheckTest(are_same, exp_same, "same translated address");
}
th_int.Stop();
th_ext.Stop();
delete nat;
delete natsf;
delete in;
for (int i = 0; i < 4; i++)
delete out[i];
}
void TestPorts(
SocketServer* internal, const SocketAddress& internal_addr,
SocketServer* external, const SocketAddress external_addrs[4]) {
TestNATPorts(internal, internal_addr, external, external_addrs,
NAT_OPEN_CONE, true);
TestNATPorts(internal, internal_addr, external, external_addrs,
NAT_ADDR_RESTRICTED, true);
TestNATPorts(internal, internal_addr, external, external_addrs,
NAT_PORT_RESTRICTED, true);
TestNATPorts(internal, internal_addr, external, external_addrs,
NAT_SYMMETRIC, false);
}
void TestNATFilters(
SocketServer* internal, const SocketAddress& internal_addr,
SocketServer* external, const SocketAddress external_addrs[4],
NATType nat_type, bool filter_ip, bool filter_port) {
Thread th_int(internal);
Thread th_ext(external);
SocketAddress server_addr = internal_addr;
server_addr.SetPort(NAT_SERVER_PORT);
NATServer* nat = new NATServer(
nat_type, internal, server_addr, external, external_addrs[0]);
NATSocketFactory* natsf = new NATSocketFactory(internal, server_addr);
TestClient* in = CreateTestClient(natsf, internal_addr);
TestClient* out[4];
for (int i = 0; i < 4; i++)
out[i] = CreateTestClient(external, external_addrs[i]);
th_int.Start();
th_ext.Start();
const char* buf = "filter_test";
size_t len = strlen(buf);
in->SendTo(buf, len, external_addrs[0]);
SocketAddress trans_addr;
out[0]->CheckNextPacket(buf, len, &trans_addr);
out[1]->SendTo(buf, len, trans_addr);
CheckReceive(in, !filter_ip, buf, len);
out[2]->SendTo(buf, len, trans_addr);
CheckReceive(in, !filter_port, buf, len);
out[3]->SendTo(buf, len, trans_addr);
CheckReceive(in, !filter_ip && !filter_port, buf, len);
th_int.Stop();
th_ext.Stop();
delete nat;
delete natsf;
delete in;
for (int i = 0; i < 4; i++)
delete out[i];
}
void TestFilters(
SocketServer* internal, const SocketAddress& internal_addr,
SocketServer* external, const SocketAddress external_addrs[4]) {
TestNATFilters(internal, internal_addr, external, external_addrs,
NAT_OPEN_CONE, false, false);
TestNATFilters(internal, internal_addr, external, external_addrs,
NAT_ADDR_RESTRICTED, true, false);
TestNATFilters(internal, internal_addr, external, external_addrs,
NAT_PORT_RESTRICTED, true, true);
TestNATFilters(internal, internal_addr, external, external_addrs,
NAT_SYMMETRIC, true, true);
}
const int PORT0 = 7405;
const int PORT1 = 7450;
const int PORT2 = 7505;
int main(int argc, char* argv[]) {
assert(LocalHost().networks().size() >= 2);
SocketAddress int_addr(LocalHost().networks()[1]->ip(), PORT0);
std::string ext_ip1 =
SocketAddress::IPToString(LocalHost().networks()[0]->ip()); // 127.0.0.1
std::string ext_ip2 =
SocketAddress::IPToString(LocalHost().networks()[1]->ip()); // 127.0.0.2
assert(int_addr.IPAsString() != ext_ip1);
//assert(int_addr.IPAsString() != ext_ip2); // uncomment
SocketAddress ext_addrs[4] = {
SocketAddress(ext_ip1, PORT1),
SocketAddress(ext_ip2, PORT1),
SocketAddress(ext_ip1, PORT2),
SocketAddress(ext_ip2, PORT2)
};
PhysicalSocketServer* int_pss = new PhysicalSocketServer();
PhysicalSocketServer* ext_pss = new PhysicalSocketServer();
std::cout << "Testing on physical network:" << std::endl;
TestPorts(int_pss, int_addr, ext_pss, ext_addrs);
std::cout << "ports: PASS" << std::endl;
TestFilters(int_pss, int_addr, ext_pss, ext_addrs);
std::cout << "filters: PASS" << std::endl;
VirtualSocketServer* int_vss = new VirtualSocketServer();
VirtualSocketServer* ext_vss = new VirtualSocketServer();
int_addr.SetIP(int_vss->GetNextIP());
ext_addrs[0].SetIP(ext_vss->GetNextIP());
ext_addrs[1].SetIP(ext_vss->GetNextIP());
ext_addrs[2].SetIP(ext_addrs[0].ip());
ext_addrs[3].SetIP(ext_addrs[1].ip());
std::cout << "Testing on virtual network:" << std::endl;
TestPorts(int_vss, int_addr, ext_vss, ext_addrs);
std::cout << "ports: PASS" << std::endl;
TestFilters(int_vss, int_addr, ext_vss, ext_addrs);
std::cout << "filters: PASS" << std::endl;
return 0;
}
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