void
Chat::onData
(const ptr_lib::shared_ptr<const Interest>& interest,
const ptr_lib::shared_ptr<Data>& data)
{
SyncDemo::ChatMessage content;
content.ParseFromArray(data->getContent().buf(), data->getContent().size());
if (getNowMilliseconds() - content.timestamp() * 1000.0 < 120000.0) {
string name = content.from();
string prefix = data->getName().getPrefix(-2).toUri();
int sessionNo = ::atoi(data->getName().get(-2).toEscapedString().c_str());
int sequenceNo = ::atoi(data->getName().get(-1).toEscapedString().c_str());
ostringstream tempStream;
tempStream << name << sessionNo;
string nameAndSession = tempStream.str();
size_t l = 0;
//update roster
while (l < roster_.size()) {
string tempName2 = roster_[l].substr(0, roster_[l].size() - 10);
int tempSessionNo = ::atoi(roster_[l].substr(roster_[l].size() - 10, 10).c_str());
if (name != tempName2 && content.type() != SyncDemo::ChatMessage_ChatMessageType_LEAVE)
++l;
else {
if (name == tempName2 && sessionNo > tempSessionNo)
roster_[l] = nameAndSession;
break;
}
}
if (l == roster_.size()) {
roster_.push_back(nameAndSession);
cout << name << ": Join" << endl;
}
// Set the alive timeout using the Interest timeout mechanism.
// TODO: Are we sure using a "/local/timeout" interest is the best future call approach?
Interest timeout("/local/timeout");
timeout.setInterestLifetimeMilliseconds(120000);
face_.expressInterest
(timeout, dummyOnData,
bind(&Chat::alive, shared_from_this(), _1, sequenceNo, name, sessionNo, prefix));
// isRecoverySyncState_ was set by sendInterest.
// TODO: If isRecoverySyncState_ changed, this assumes that we won't get
// data from an interest sent before it changed.
if (content.type() == SyncDemo::ChatMessage_ChatMessageType_CHAT &&
!isRecoverySyncState_ && content.from() != screenName_)
cout << content.from() << ": " << content.data() << endl;
else if (content.type() == SyncDemo::ChatMessage_ChatMessageType_LEAVE) {
// leave message
int n = rosterFind(nameAndSession);
if (n >= 0 && name != screenName_) {
roster_.erase(roster_.begin() + n);
cout << name << ": Leave" << endl;
}
}
}
}
void onData(const ptr_lib::shared_ptr<const Interest>& interest, const ptr_lib::shared_ptr<Data>& data)
{
++callbackCount_;
cout << "Got data packet with name " << data->getName().toUri() << endl;
for (size_t i = 0; i < data->getContent().size(); ++i)
cout << (*data->getContent())[i];
cout << endl;
}
void
NdndIdFetcher::operator()(const ptr_lib::shared_ptr<const Interest>& interest, const ptr_lib::shared_ptr<Data>& ndndIdData)
{
if (ndndIdData->getSignature().getType() == Signature::Sha256WithRsa)
{
ndndId_.resize(32);
ndn_digestSha256(ndndIdData->getContent().value(), ndndIdData->getContent().value_size(), ndndId_.buf());
onSuccess_();
}
else
onFailure_();
}
/**
* This is called when the face create command responds to decode the
* encodedControlResonse as a TLV ControlResponse message containing one
* ControlParameters. Get the face ID and call registerRoute().
* @param expressedInterest The interest given to expressInterest.
* @param responseData The response Data packet whose content is the
* TLV-encoded ControlResponse.
* @param prefix The prefix name to register.
* @param face The Face which is used to sign the command interest and call
* expressInterest.
* @param enabled On success or error, set *enabled = false.
*/
static void
processCreateFaceResponse
(const ptr_lib::shared_ptr<const Interest>& expressedInterest,
const ptr_lib::shared_ptr<Data>& responseData, const Name& prefix, Face* face,
bool* enabled)
{
ndn_message::ControlParametersTypes_ControlParametersResponseMessage
controlResponseMessage;
ProtobufTlv::decode(controlResponseMessage, responseData->getContent());
const ndn_message::ControlParametersTypes_ControlParametersResponse&
controlResponse = controlResponseMessage.control_response();
const int lowestErrorCode = 400;
if (controlResponse.status_code() >= lowestErrorCode) {
cout << "Face create command got error, code " <<
controlResponse.status_code() << ": " + controlResponse.status_text() <<
endl;
*enabled = false;
return;
}
if (controlResponse.control_parameters_size() != 1) {
cout << "Face create command response does not have one ControlParameters" <<
endl;
*enabled = false;
return;
}
boost::uint64_t faceId = controlResponse.control_parameters(0).face_id();
cout << "Created face ID " << faceId << endl;
registerRoute(prefix, faceId, face, enabled);
}
void
Node::RegisterResponse::operator()(const ptr_lib::shared_ptr<const Interest>& interest, const ptr_lib::shared_ptr<Data>& responseData)
{
// Decode responseData->getContent() and check for a success code.
// TODO: Move this into the TLV code.
struct ndn_TlvDecoder decoder;
ndn_TlvDecoder_initialize
(&decoder, responseData->getContent().buf(),
responseData->getContent().size());
ndn_Error error;
size_t endOffset;
if ((error = ndn_TlvDecoder_readNestedTlvsStart
(&decoder, ndn_Tlv_NfdCommand_ControlResponse, &endOffset))) {
_LOG_DEBUG
("Register prefix failed: Error decoding the NFD response: " <<
ndn_getErrorString(error));
info_->onRegisterFailed_(info_->prefix_);
return;
}
uint64_t statusCode;
if ((error = ndn_TlvDecoder_readNonNegativeIntegerTlv
(&decoder, ndn_Tlv_NfdCommand_StatusCode, &statusCode))) {
_LOG_DEBUG
("Register prefix failed: Error decoding the NFD response: " <<
ndn_getErrorString(error));
info_->onRegisterFailed_(info_->prefix_);
return;
}
// Status code 200 is "OK".
if (statusCode != 200) {
_LOG_DEBUG
("Register prefix failed: Expected NFD status code 200, got: " <<
statusCode);
info_->onRegisterFailed_(info_->prefix_);
return;
}
_LOG_DEBUG("Register prefix succeeded with the NFD forwarder for prefix " <<
info_->prefix_->toUri());
}
/**
* This is called when the register route command responds to decode the
* encodedControlResponse as a TLV ControlParametersResponse message
* containing one ControlParameters. On success, print the ControlParameters
* values which should be the same as requested.
* @param expressedInterest The interest given to expressInterest.
* @param responseData The response Data packet whose content is the TLV-encoded
* ControlParametersResponse.
* @param enabled On success or error, set *enabled = false.
*/
static void
processRegisterResponse
(const ptr_lib::shared_ptr<const Interest>& expressedInterest,
const ptr_lib::shared_ptr<Data>& responseData, bool* enabled)
{
// We are finished in all cases.
*enabled = false;
ndn_message::ControlParametersTypes_ControlParametersResponseMessage
decodedControlResponse;
ProtobufTlv::decode(decodedControlResponse, responseData->getContent());
const ndn_message::ControlParametersTypes_ControlParametersResponse&
controlResponse = decodedControlResponse.control_response();
const boost::uint64_t lowestErrorCode = 400;
if (controlResponse.status_code() >= lowestErrorCode) {
cout << "Face create command got error, code " <<
controlResponse.status_code() <<": " + controlResponse.status_text();
return;
}
if (controlResponse.control_parameters_size() != 1) {
cout << "Face create command response does not have one ControlParameters";
return;
}
// Success. Print the ControlParameters response.
const ndn_message::ControlParametersTypes_ControlParameters& controlParameters =
controlResponse.control_parameters(0);
string name = "";
for (size_t i = 0; i < controlParameters.name().component_size(); ++i)
name += "/" + controlParameters.name().component(i);
cout << "Successful in name registration: ControlParameters(Name: " << name <<
", FaceId: " << controlParameters.face_id() <<
", Origin: " << controlParameters.origin() <<
", Cost: " << controlParameters.cost() <<
", Flags: " << controlParameters.flags() << ")" << endl;
}