HRESULT CTestReader::Test1()
{
HRESULT hr = S_OK;
StunAttribute attrib;
const char* pszExpectedSoftwareAttribute = "STUN test client";
const char* pszExpectedUserName = "******";
CRefCountedBuffer spBuffer;
char szStringValue[100];
const unsigned char *req = c_requestbytes;
size_t requestsize = sizeof(c_requestbytes)-1; // -1 to get rid of the trailing null
CStunMessageReader reader;
CStunMessageReader::ReaderParseState state;
// reader is expecting at least enough bytes to fill the header
ChkIfA(reader.AddBytes(NULL, 0) != CStunMessageReader::HeaderNotRead, E_FAIL);
ChkIfA(reader.HowManyBytesNeeded() != STUN_HEADER_SIZE, E_FAIL);
state = reader.AddBytes(req, requestsize);
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
ChkIfA(reader.HowManyBytesNeeded() != 0, E_FAIL);
ChkA(reader.GetBuffer(&spBuffer));
ChkIfA(reader.GetMessageClass() != StunMsgClassRequest, E_FAIL);
ChkIfA(reader.GetMessageType() != StunMsgTypeBinding, E_FAIL);
ChkA(reader.GetAttributeByType(STUN_ATTRIBUTE_SOFTWARE, &attrib));
ChkIfA(attrib.attributeType != STUN_ATTRIBUTE_SOFTWARE, E_FAIL);
ChkIfA(0 != ::strncmp(pszExpectedSoftwareAttribute, (const char*)(spBuffer->GetData() + attrib.offset), attrib.size), E_FAIL);
ChkA(reader.GetAttributeByType(STUN_ATTRIBUTE_USERNAME, &attrib));
ChkIfA(attrib.attributeType != STUN_ATTRIBUTE_USERNAME, E_FAIL);
ChkIfA(0 != ::strncmp(pszExpectedUserName, (const char*)(spBuffer->GetData() + attrib.offset), attrib.size), E_FAIL);
ChkA(reader.GetStringAttributeByType(STUN_ATTRIBUTE_SOFTWARE, szStringValue, ARRAYSIZE(szStringValue)));
ChkIfA(0 != ::strcmp(pszExpectedSoftwareAttribute, szStringValue), E_FAIL);
ChkIfA(reader.HasFingerprintAttribute() == false, E_FAIL);
ChkIfA(reader.IsFingerprintAttributeValid() == false, E_FAIL);
ChkIfA(reader.HasMessageIntegrityAttribute() == false, E_FAIL);
ChkA(reader.ValidateMessageIntegrityShort(c_password));
Cleanup:
return hr;
}
// this test validates that IPV6 addresses work fine with CStunMessageBuilder and CStunMessageReader
HRESULT CTestBuilder::Test2()
{
HRESULT hr = S_OK;
CSocketAddress addr(0,0);
CSocketAddress addrValidate(0,0);
const char* ip6addr = "ABCDEFGHIJKLMNOP";
sockaddr_in6 addr6 = {};
CStunMessageReader reader;
StunTransactionId transid;
CStunMessageBuilder builder;
CRefCountedBuffer spBuffer;
addr6.sin6_family = AF_INET6;
addr6.sin6_port = htons(9999);
memcpy(addr6.sin6_addr.s6_addr, ip6addr, 16);
addr = CSocketAddress(addr6);
ChkA(builder.AddHeader(StunMsgTypeBinding, StunMsgClassRequest));
ChkA(builder.AddRandomTransactionId(&transid));
ChkA(builder.AddMappedAddress(addr));
ChkA(builder.AddXorMappedAddress(addr));
ChkA(builder.GetResult(&spBuffer));
ChkIfA(CStunMessageReader::BodyValidated != reader.AddBytes(spBuffer->GetData(), spBuffer->GetSize()), E_FAIL);
ChkA(reader.GetXorMappedAddress(&addrValidate));
ChkIf(addrValidate.IsSameIP_and_Port(addr) == false, E_FAIL);
Cleanup:
return hr;
}
HRESULT CTestMessageHandler::SendHelper(CStunMessageBuilder& builderRequest, CStunMessageReader* pReaderResponse, IStunAuth* pAuth)
{
CRefCountedBuffer spBufferRequest;
CRefCountedBuffer spBufferResponse(new CBuffer(MAX_STUN_MESSAGE_SIZE));
StunMessageIn msgIn;
StunMessageOut msgOut;
CStunMessageReader reader;
CSocketAddress addrDest;
TransportAddressSet tas;
HRESULT hr = S_OK;
InitTransportAddressSet(tas, true, true, true, true);
builderRequest.GetResult(&spBufferRequest);
ChkIf(CStunMessageReader::BodyValidated != reader.AddBytes(spBufferRequest->GetData(), spBufferRequest->GetSize()), E_FAIL);
msgIn.fConnectionOriented = false;
msgIn.addrLocal = _addrServerPP;
msgIn.pReader = &reader;
msgIn.socketrole = RolePP;
msgIn.addrRemote = _addrMapped;
msgOut.spBufferOut = spBufferResponse;
ChkA(CStunRequestHandler::ProcessRequest(msgIn, msgOut, &tas, pAuth));
ChkIf(CStunMessageReader::BodyValidated != pReaderResponse->AddBytes(spBufferResponse->GetData(), spBufferResponse->GetSize()), E_FAIL);
Cleanup:
return hr;
}
HRESULT CMockTransport::SendResponse(SocketRole roleOutput, const CSocketAddress& addr, CRefCountedBuffer& spResponse)
{
m_outputRole = roleOutput;
m_addrDestination = addr;
m_outputstream.Write(spResponse->GetData(), spResponse->GetSize());
return S_OK;
}
// This test validates that the construction and parsing of the message integrity attribute in a stun message works as expected
// The test also validates both short term and long term credential modes with or without the presence of a fingerprint attribute
HRESULT CTestIntegrity::TestMessageIntegrity(bool fWithFingerprint, bool fLongCredentials)
{
HRESULT hr = S_OK;
const char* pszUserName = "******";
const char* pszRealm = "stunrealm";
const char* pszPassword = "******";
CStunMessageBuilder builder;
CStunMessageReader reader;
uint8_t *pMsg = NULL;
size_t sizeMsg = 0;
CStunMessageReader::ReaderParseState state;
CRefCountedBuffer spBuffer;
builder.AddBindingRequestHeader();
builder.AddRandomTransactionId(NULL);
builder.AddUserName(pszUserName);
builder.AddRealm(pszRealm);
if (fLongCredentials == false)
{
Chk(builder.AddMessageIntegrityShortTerm(pszPassword));
}
else
{
Chk(builder.AddMessageIntegrityLongTerm(pszUserName, pszRealm, pszPassword));
}
if (fWithFingerprint)
{
builder.AddFingerprintAttribute();
}
Chk(builder.GetResult(&spBuffer));
pMsg = spBuffer->GetData();
sizeMsg = spBuffer->GetSize();
state = reader.AddBytes(pMsg, sizeMsg);
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
ChkIfA(reader.HasMessageIntegrityAttribute()==false, E_FAIL);
if (fLongCredentials == false)
{
ChkA(reader.ValidateMessageIntegrityShort(pszPassword));
}
else
{
ChkA(reader.ValidateMessageIntegrityLong(pszUserName, pszRealm, pszPassword));
}
Cleanup:
return hr;
}
// Test1 - just do a basic binding request
HRESULT CTestMessageHandler::Test1()
{
HRESULT hr=S_OK;
CStunMessageBuilder builder;
CSocketAddress clientaddr(0x12345678, 9876);
CRefCountedBuffer spBuffer;
CStunThreadMessageHandler handler;
CStunMessageReader reader;
CStunMessageReader::ReaderParseState state;
StunMessageEnvelope message;
_spTransport->Reset();
_spTransport->AddPP(CSocketAddress(0xaaaaaaaa, 1234));
InitBindingRequest(builder);
builder.GetStream().GetBuffer(&spBuffer);
handler.SetResponder(_spTransport);
message.localSocket = RolePP;
message.remoteAddr = clientaddr;
message.spBuffer = spBuffer;
_spTransport->GetSocketAddressForRole(message.localSocket, &(message.localAddr));
handler.ProcessRequest(message);
spBuffer.reset();
_spTransport->GetOutputStream().GetBuffer(&spBuffer);
state = reader.AddBytes(spBuffer->GetData(), spBuffer->GetSize());
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
// validate that the binding response matches our expectations
ChkA(ValidateMappedAddress(reader, clientaddr));
// validate that it came from the server port we expected
ChkA(ValidateOriginAddress(reader, RolePP));
// did we get back the binding request we expected
ChkA(ValidateResponseAddress(clientaddr));
Cleanup:
return hr;
}
HRESULT CStunMessageBuilder::AddMessageIntegrityImpl(uint8_t* key, size_t keysize)
{
HRESULT hr = S_OK;
const size_t c_hmacsize = 20;
uint8_t hmacvaluedummy[c_hmacsize] = {}; // zero-init
unsigned int resultlength = c_hmacsize;
uint8_t* pDstBuf = NULL;
CRefCountedBuffer spBuffer;
void* pData = NULL;
size_t length = 0;
unsigned char* pHashResult = NULL;
UNREFERENCED_VARIABLE(pHashResult);
ChkIfA(key==NULL || keysize <= 0, E_INVALIDARG);
// add in a "zero-init" HMAC value. This adds 24 bytes to the length
Chk(AddAttribute(STUN_ATTRIBUTE_MESSAGEINTEGRITY, hmacvaluedummy, ARRAYSIZE(hmacvaluedummy)));
Chk(FixLengthField());
// now do a SHA1 on everything but the last 24 bytes (4 bytes of the attribute header and 20 bytes for the dummy content)
ChkA(_stream.GetBuffer(&spBuffer));
pData = spBuffer->GetData();
length = spBuffer->GetSize();
ASSERT(length > 24);
length = length-24;
// now do a little pointer math so that HMAC can write exactly to where the hash bytes will appear
pDstBuf = ((uint8_t*)pData) + length + 4;
#ifndef __APPLE__
pHashResult = HMAC(EVP_sha1(), key, keysize, (uint8_t*)pData, length, pDstBuf, &resultlength);
ASSERT(resultlength == 20);
ASSERT(pHashResult != NULL);
#else
CCHmac(kCCHmacAlgSHA1, key, keysize,(uint8_t*)pData, length, pDstBuf);
UNREFERENCED_VARIABLE(resultlength);
#endif
Cleanup:
return hr;
}
HRESULT CTestClientLogic::ValidateBindingRequest(CRefCountedBuffer& spMsg, StunTransactionId* pTransId)
{
HRESULT hr = S_OK;
CStunMessageReader reader;
CStunMessageReader::ReaderParseState state;
state = reader.AddBytes(spMsg->GetData(), spMsg->GetSize());
ChkIfA(state != CStunMessageReader::BodyValidated, E_UNEXPECTED);
ChkIfA(reader.GetMessageType() != StunMsgTypeBinding, E_UNEXPECTED);
reader.GetTransactionId(pTransId);
ChkIfA(false == IsTransactionIdValid(*pTransId), E_FAIL);
Cleanup:
return hr;
}
HRESULT CStunClientTestBase::BasicReaderValidation(CRefCountedBuffer& spMsg, CStunMessageReader& reader)
{
HRESULT hr = S_OK;
CStunMessageReader::ReaderParseState readerstate;
StunTransactionId transid;
int cmp = 0;
readerstate = reader.AddBytes(spMsg->GetData(), spMsg->GetSize());
ChkIf(readerstate != CStunMessageReader::BodyValidated, E_FAIL);
reader.GetTransactionId(&transid);
cmp = memcmp(transid.id, _transid.id, sizeof(_transid));
ChkIf(cmp!=0, E_FAIL);
Cleanup:
return hr;
}
HRESULT CStunMessageBuilder::AddFingerprintAttribute()
{
boost::crc_32_type result;
uint32_t value;
CRefCountedBuffer spBuffer;
void* pData = NULL;
size_t length = 0;
int offset;
HRESULT hr = S_OK;
Chk(_stream.WriteUint16(htons(STUN_ATTRIBUTE_FINGERPRINT)));
Chk(_stream.WriteUint16(htons(sizeof(uint32_t)))); // field length is 4 bytes
Chk(_stream.WriteUint32(0)); // dummy value for start
Chk(FixLengthField());
// now do a CRC-32 on everything but the last 8 bytes
ChkA(_stream.GetBuffer(&spBuffer));
pData = spBuffer->GetData();
length = spBuffer->GetSize();
ASSERT(length > 8);
length = length-8;
result.process_bytes(pData, length);
value = result.checksum();
value = value ^ STUN_FINGERPRINT_XOR;
offset = -(int)(sizeof(value));
Chk(_stream.SeekRelative(offset));
Chk(_stream.WriteUint32(htonl(value)));
Cleanup:
return hr;
}
HRESULT CTestMessageHandler::ValidateOriginAddress(CStunMessageReader& reader, SocketRole socketExpected)
{
HRESULT hr = S_OK;
StunAttribute attrib;
CSocketAddress addrExpected, mappedaddr;
CRefCountedBuffer spBuffer;
Chk(reader.GetStream().GetBuffer(&spBuffer));
Chk(_spTransport->GetSocketAddressForRole(socketExpected, &addrExpected));
ChkA(reader.GetAttributeByType(STUN_ATTRIBUTE_RESPONSE_ORIGIN, &attrib));
ChkA(GetMappedAddress(spBuffer->GetData()+attrib.offset, attrib.size, &mappedaddr));
ChkIfA(false == addrExpected.IsSameIP_and_Port(mappedaddr), E_FAIL);
ChkIfA(socketExpected != _spTransport->m_outputRole, E_FAIL);
Cleanup:
return hr;
}
// The goal of this test is to just validate that we can create a message from CStunMessageBuilder and have it's output parsed correctly by CStunMessageReader
// Also helps validate CSocketAddress
HRESULT CTestBuilder::Test1()
{
HRESULT hr = S_OK;
CStunMessageBuilder builder;
CStunMessageReader reader;
StunAttribute attrib;
CRefCountedBuffer spBuffer;
CRefCountedBuffer spBufferReader;
CSocketAddress addrValidate(0,0);
StunTransactionId transid = {};
uint32_t ipvalidate = 0;
CSocketAddress addr(0x7f000001, 9999);
CSocketAddress addrOrigin(0xAABBCCDD, 8888);
CSocketAddress addrOther(0x11223344, 7777);
ChkA(builder.AddBindingRequestHeader());
ChkA(builder.AddRandomTransactionId(&transid));
ChkA(builder.AddStringAttribute(STUN_ATTRIBUTE_SOFTWARE, "FOOBAR"));
ChkA(builder.AddMappedAddress(addr));
ChkA(builder.AddXorMappedAddress(addr));
ChkA(builder.AddOtherAddress(addrOther));
ChkA(builder.AddResponseOriginAddress(addrOrigin));
ChkA(builder.AddFingerprintAttribute());
ChkA(builder.GetResult(&spBuffer));
ChkIfA(CStunMessageReader::BodyValidated != reader.AddBytes(spBuffer->GetData(), spBuffer->GetSize()), E_FAIL);
ChkIfA(reader.HasFingerprintAttribute() == false, E_FAIL);
ChkIfA(reader.IsFingerprintAttributeValid() == false, E_FAIL);
ChkIfA(reader.GetMessageClass() != StunMsgClassRequest, E_FAIL);
ChkIfA(reader.GetMessageType() != StunMsgTypeBinding, E_FAIL);
ChkA(reader.GetBuffer(&spBufferReader));
ChkA(reader.GetAttributeByType(STUN_ATTRIBUTE_SOFTWARE, &attrib));
ChkIfA(attrib.attributeType != STUN_ATTRIBUTE_SOFTWARE, E_FAIL);
ChkIfA(0 != ::strncmp("FOOBAR", (const char*)(spBufferReader->GetData() + attrib.offset), attrib.size), E_FAIL);
ChkA(reader.GetXorMappedAddress(&addrValidate));
ChkIf(addrValidate.IsSameIP_and_Port(addr) == false, E_FAIL);
ChkIfA(addrValidate.GetIPLength() != 4, E_FAIL);
addrValidate = CSocketAddress(0,0);
ChkA(reader.GetMappedAddress(&addrValidate));
ChkIfA(addrValidate.GetPort() != 9999, E_FAIL);
ChkIfA(addrValidate.GetIPLength() != 4, E_FAIL);
ChkIfA(4 != addrValidate.GetIP(&ipvalidate, 4), E_FAIL);
ChkIfA(ipvalidate != 0x7f000001, E_FAIL);
addrValidate = CSocketAddress(0,0);
ipvalidate = 0;
reader.GetOtherAddress(&addrValidate);
ChkIfA(addrValidate.GetPort() != 7777, E_FAIL);
ChkIfA(addrValidate.GetIPLength() != 4, E_FAIL);
ChkIfA(4 != addrValidate.GetIP(&ipvalidate, 4), E_FAIL);
ChkIf(ipvalidate != 0x11223344, E_FAIL);
Cleanup:
return hr;
}
// test long-credential authentication
HRESULT CTestMessageHandler::Test4()
{
HRESULT hr=S_OK;
CStunMessageBuilder builder1, builder2;
CStunMessageReader reader1, reader2;
CSocketAddress clientaddr(0x12345678, 9876);
CSocketAddress addrMapped;
CRefCountedBuffer spBuffer;
CStunThreadMessageHandler handler;
uint16_t errorcode = 0;
char szNonce[MAX_STUN_AUTH_STRING_SIZE+1];
char szRealm[MAX_STUN_AUTH_STRING_SIZE+1];
CStunMessageReader::ReaderParseState state;
StunMessageEnvelope message;
_spTransport->Reset();
_spTransport->AddPP(CSocketAddress(0xaaaaaaaa, 1234));
handler.SetAuth(_spAuthLong);
handler.SetResponder(_spTransport);
// -----------------------------------------------------------------------
// simulate a user making a request with no message integrity attribute (or username, or realm)
InitBindingRequest(builder1);
builder1.GetResult(&spBuffer);
message.localSocket = RolePP;
message.remoteAddr = clientaddr;
message.spBuffer = spBuffer;
_spTransport->GetSocketAddressForRole(message.localSocket, &(message.localAddr));
handler.ProcessRequest(message);
spBuffer.reset();
_spTransport->m_outputstream.GetBuffer(&spBuffer);
state = reader1.AddBytes(spBuffer->GetData(), spBuffer->GetSize());
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
// we expect the response back will be a 401 with a provided nonce and realm
Chk(reader1.GetErrorCode(&errorcode));
ChkIfA(reader1.GetMessageClass() != ::StunMsgClassFailureResponse, E_UNEXPECTED);
ChkIf(errorcode != ::STUN_ERROR_UNAUTHORIZED, E_UNEXPECTED);
reader1.GetStringAttributeByType(STUN_ATTRIBUTE_REALM, szRealm, ARRAYSIZE(szRealm));
reader1.GetStringAttributeByType(STUN_ATTRIBUTE_NONCE, szNonce, ARRAYSIZE(szNonce));
// --------------------------------------------------------------------------------
// now simulate the follow-up request
_spTransport->ClearStream();
spBuffer.reset();
InitBindingRequest(builder2);
builder2.AddNonce(szNonce);
builder2.AddRealm(szRealm);
builder2.AddUserName("AuthorizedUser");
builder2.AddMessageIntegrityLongTerm("AuthorizedUser", szRealm, "password");
builder2.GetResult(&spBuffer);
message.localSocket = RolePP;
message.remoteAddr = clientaddr;
message.spBuffer = spBuffer;
_spTransport->GetSocketAddressForRole(message.localSocket, &(message.localAddr));
handler.ProcessRequest(message);
spBuffer.reset();
_spTransport->m_outputstream.GetBuffer(&spBuffer);
state = reader2.AddBytes(spBuffer->GetData(), spBuffer->GetSize());
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
ChkIfA(reader2.GetMessageClass() != ::StunMsgClassSuccessResponse, E_UNEXPECTED);
// should have a mapped address
ChkA(reader2.GetMappedAddress(&addrMapped));
// and the message integrity field should be valid
ChkA(reader2.ValidateMessageIntegrityLong("AuthorizedUser", szRealm, "password"));
Cleanup:
return hr;
}
// test simple authentication
HRESULT CTestMessageHandler::Test3()
{
HRESULT hr=S_OK;
CStunMessageBuilder builder1, builder2, builder3;
CStunMessageReader reader1, reader2, reader3;
CSocketAddress clientaddr(0x12345678, 9876);
CRefCountedBuffer spBuffer;
CStunThreadMessageHandler handler;
uint16_t errorcode = 0;
CStunMessageReader::ReaderParseState state;
StunMessageEnvelope message;
_spTransport->Reset();
_spTransport->AddPP(CSocketAddress(0xaaaaaaaa, 1234));
handler.SetAuth(_spAuthShort);
handler.SetResponder(_spTransport);
// -----------------------------------------------------------------------
// simulate an authorized user making a request with a valid password
InitBindingRequest(builder1);
builder1.AddStringAttribute(STUN_ATTRIBUTE_USERNAME, "AuthorizedUser");
builder1.AddMessageIntegrityShortTerm("password");
builder1.GetResult(&spBuffer);
message.localSocket = RolePP;
message.remoteAddr = clientaddr;
message.spBuffer = spBuffer;
_spTransport->GetSocketAddressForRole(message.localSocket, &(message.localAddr));
handler.ProcessRequest(message);
// we expect back a response with a valid message integrity field
spBuffer.reset();
_spTransport->m_outputstream.GetBuffer(&spBuffer);
state = reader1.AddBytes(spBuffer->GetData(), spBuffer->GetSize());
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
ChkA(reader1.ValidateMessageIntegrityShort("password"));
// -----------------------------------------------------------------------
// simulate a user with a bad password
spBuffer.reset();
InitBindingRequest(builder2);
builder2.AddStringAttribute(STUN_ATTRIBUTE_USERNAME, "WrongUser");
builder2.AddMessageIntegrityShortTerm("wrongpassword");
builder2.GetResult(&spBuffer);
message.localSocket = RolePP;
message.remoteAddr = clientaddr;
message.spBuffer = spBuffer;
_spTransport->GetSocketAddressForRole(message.localSocket, &(message.localAddr));
_spTransport->ClearStream();
handler.ProcessRequest(message);
spBuffer.reset();
_spTransport->m_outputstream.GetBuffer(&spBuffer);
state = reader2.AddBytes(spBuffer->GetData(), spBuffer->GetSize());
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
errorcode = 0;
ChkA(reader2.GetErrorCode(&errorcode));
ChkIfA(errorcode != ::STUN_ERROR_UNAUTHORIZED, E_FAIL);
// -----------------------------------------------------------------------
// simulate a client sending no credentials - we expect it to fire back with a 400/bad-request
spBuffer.reset();
InitBindingRequest(builder3);
builder3.GetResult(&spBuffer);
message.localSocket = RolePP;
message.remoteAddr = clientaddr;
message.spBuffer = spBuffer;
_spTransport->GetSocketAddressForRole(message.localSocket, &(message.localAddr));
_spTransport->ClearStream();
handler.ProcessRequest(message);
spBuffer.reset();
_spTransport->m_outputstream.GetBuffer(&spBuffer);
state = reader3.AddBytes(spBuffer->GetData(), spBuffer->GetSize());
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
errorcode = 0;
ChkA(reader3.GetErrorCode(&errorcode));
ChkIfA(errorcode != ::STUN_ERROR_BADREQUEST, E_FAIL);
Cleanup:
return hr;
}
// send a binding request to a duplex server instructing it to send back on it's alternate port and alternate IP to an alternate client port
HRESULT CTestMessageHandler::Test2()
{
HRESULT hr=S_OK;
CStunMessageBuilder builder;
CSocketAddress clientaddr(0x12345678, 9876);
CSocketAddress recvaddr;
uint16_t responsePort = 2222;
CRefCountedBuffer spBuffer;
CStunThreadMessageHandler handler;
CStunMessageReader reader;
CStunMessageReader::ReaderParseState state;
::StunChangeRequestAttribute changereq;
StunMessageEnvelope message;
_spTransport->Reset();
_spTransport->AddPP(CSocketAddress(0xaaaaaaaa, 1234));
_spTransport->AddPA(CSocketAddress(0xaaaaaaaa, 1235));
_spTransport->AddAP(CSocketAddress(0xbbbbbbbb, 1234));
_spTransport->AddAA(CSocketAddress(0xbbbbbbbb, 1235));
InitBindingRequest(builder);
builder.AddResponsePort(responsePort);
changereq.fChangeIP = true;
changereq.fChangePort = true;
builder.AddChangeRequest(changereq);
builder.AddResponsePort(responsePort);
builder.GetResult(&spBuffer);
message.localSocket = RolePP;
message.remoteAddr = clientaddr;
message.spBuffer = spBuffer;
_spTransport->GetSocketAddressForRole(RolePP, &(message.localAddr));
handler.SetResponder(_spTransport);
handler.ProcessRequest(message);
spBuffer->Reset();
_spTransport->GetOutputStream().GetBuffer(&spBuffer);
// parse the response
state = reader.AddBytes(spBuffer->GetData(), spBuffer->GetSize());
ChkIfA(state != CStunMessageReader::BodyValidated, E_FAIL);
// validate that the binding response matches our expectations
ChkA(ValidateMappedAddress(reader, clientaddr));
ChkA(ValidateOriginAddress(reader, RoleAA));
// did it get sent back to where we thought it was
recvaddr = clientaddr;
recvaddr.SetPort(responsePort);
ChkA(ValidateResponseAddress(recvaddr));
Cleanup:
return hr;
}