69         Metadata metadata;  in ClearRequests()  local
71         metadata.ReadFrom(message);  in ClearRequests()
73         if ((aAddress == nullptr) || (metadata.mSourceAddress == *aAddress))  in ClearRequests()
75             FinalizeCoapTransaction(message, metadata, nullptr, nullptr, kErrorAbort);  in ClearRequests()
276         Metadata metadata;  in SendMessage()  local
311         metadata.mSourceAddress            = aMessageInfo.GetSockAddr();  in SendMessage()
312         metadata.mDestinationPort          = aMessageInfo.GetPeerPort();  in SendMessage()
313         metadata.mDestinationAddress       = aMessageInfo.GetPeerAddr();  in SendMessage()
314         metadata.mMulticastLoop            = aMessageInfo.GetMulticastLoop();  in SendMessage()
315         metadata.mResponseHandler          = aHandler;  in SendMessage()
316         metadata.mResponseContext          = aContext;  in SendMessage()
317         metadata.mRetransmissionsRemaining = aTxParameters.mMaxRetransmit;  in SendMessage()
318         metadata.mRetransmissionTimeout    = aTxParameters.CalculateInitialRetransmissionTimeout();  in SendMessage()
319         metadata.mAcknowledged             = false;  in SendMessage()
320         metadata.mConfirmable              = aMessage.IsConfirmable();  in SendMessage()
322         metadata.mHopLimit        = aMessageInfo.GetHopLimit();  in SendMessage()
323         metadata.mIsHostInterface = aMessageInfo.IsHostInterface();  in SendMessage()
326         metadata.mBlockwiseReceiveHook  = aReceiveHook;  in SendMessage()
327         metadata.mBlockwiseTransmitHook = aTransmitHook;  in SendMessage()
330         metadata.mObserve = observe;  in SendMessage()
332         metadata.mNextTimerShot =  in SendMessage()
334 …(metadata.mConfirmable ? metadata.mRetransmissionTimeout : aTxParameters.CalculateMaxTransmitWait(…  in SendMessage()
336         storedCopy = CopyAndEnqueueMessage(aMessage, copyLength, metadata);  in SendMessage()
459     Metadata         metadata;  in HandleRetransmissionTimer()  local
464         metadata.ReadFrom(message);  in HandleRetransmissionTimer()
466         if (nextTime.GetNow() >= metadata.mNextTimerShot)  in HandleRetransmissionTimer()
469             if (message.IsRequest() && metadata.mObserve && metadata.mAcknowledged)  in HandleRetransmissionTimer()
476             if (!metadata.mConfirmable || (metadata.mRetransmissionsRemaining == 0))  in HandleRetransmissionTimer()
479                 FinalizeCoapTransaction(message, metadata, nullptr, nullptr, kErrorResponseTimeout);  in HandleRetransmissionTimer()
484             metadata.mRetransmissionsRemaining--;  in HandleRetransmissionTimer()
485             metadata.mRetransmissionTimeout *= 2;  in HandleRetransmissionTimer()
486             metadata.mNextTimerShot = nextTime.GetNow() + metadata.mRetransmissionTimeout;  in HandleRetransmissionTimer()
487             metadata.UpdateIn(message);  in HandleRetransmissionTimer()
490             if (!metadata.mAcknowledged)  in HandleRetransmissionTimer()
492                 messageInfo.SetPeerAddr(metadata.mDestinationAddress);  in HandleRetransmissionTimer()
493                 messageInfo.SetPeerPort(metadata.mDestinationPort);  in HandleRetransmissionTimer()
494                 messageInfo.SetSockAddr(metadata.mSourceAddress);  in HandleRetransmissionTimer()
496                 messageInfo.SetHopLimit(metadata.mHopLimit);  in HandleRetransmissionTimer()
497                 messageInfo.SetIsHostInterface(metadata.mIsHostInterface);  in HandleRetransmissionTimer()
499                 messageInfo.SetMulticastLoop(metadata.mMulticastLoop);  in HandleRetransmissionTimer()
505         nextTime.UpdateIfEarlier(metadata.mNextTimerShot);  in HandleRetransmissionTimer()
528     Metadata metadata;  in AbortTransaction()  local
532         metadata.ReadFrom(message);  in AbortTransaction()
534         if (metadata.mResponseHandler == aHandler && metadata.mResponseContext == aContext)  in AbortTransaction()
536             FinalizeCoapTransaction(message, metadata, nullptr, nullptr, kErrorAbort);  in AbortTransaction()
1064     Metadata metadata;  in ProcessReceivedResponse()  local
1075     request = FindRelatedRequest(aMessage, aMessageInfo, metadata);  in ProcessReceivedResponse()
1079     if (metadata.mObserve && request->IsRequest())  in ProcessReceivedResponse()
1094             FinalizeCoapTransaction(*request, metadata, nullptr, nullptr, kErrorAbort);  in ProcessReceivedResponse()
1105             if (metadata.mObserve && !request->IsRequest())  in ProcessReceivedResponse()
1110                 FinalizeCoapTransaction(*request, metadata, &aMessage, &aMessageInfo, kErrorNone);  in ProcessReceivedResponse()
1117                 if (metadata.mConfirmable)  in ProcessReceivedResponse()
1119                     metadata.mAcknowledged = true;  in ProcessReceivedResponse()
1120                     metadata.UpdateIn(*request);  in ProcessReceivedResponse()
1125                 if (metadata.mResponseHandler == nullptr)  in ProcessReceivedResponse()
1138             if (metadata.mObserve && responseObserve && (metadata.mResponseHandler != nullptr))  in ProcessReceivedResponse()
1141 …        metadata.mResponseHandler(metadata.mResponseContext, &aMessage, &aMessageInfo, kErrorNone);  in ProcessReceivedResponse()
1144                 metadata.mAcknowledged = true;  in ProcessReceivedResponse()
1145                 metadata.UpdateIn(*request);  in ProcessReceivedResponse()
1151 …       if (metadata.mBlockwiseTransmitHook != nullptr || metadata.mBlockwiseReceiveHook != nullptr)  in ProcessReceivedResponse()
1185 …                 FinalizeCoapTransaction(*request, metadata, &aMessage, &aMessageInfo, kErrorNone);  in ProcessReceivedResponse()
1188 …             if (aMessage.GetCode() == kCodeContinue && metadata.mBlockwiseTransmitHook != nullptr)  in ProcessReceivedResponse()
1190                         error = SendNextBlock1Request(*request, aMessage, aMessageInfo, metadata);  in ProcessReceivedResponse()
1193 …           if (aMessage.GetCode() != kCodeContinue || metadata.mBlockwiseTransmitHook == nullptr ||  in ProcessReceivedResponse()
1196 …                      FinalizeCoapTransaction(*request, metadata, &aMessage, &aMessageInfo, error);  in ProcessReceivedResponse()
1200 …             if (aMessage.GetCode() < kCodeBadRequest && metadata.mBlockwiseReceiveHook != nullptr)  in ProcessReceivedResponse()
1203 …       SendNextBlock2Request(*request, aMessage, aMessageInfo, metadata, totalTransferSize, false);  in ProcessReceivedResponse()
1206 …          if (aMessage.GetCode() >= kCodeBadRequest || metadata.mBlockwiseReceiveHook == nullptr ||  in ProcessReceivedResponse()
1209 …                      FinalizeCoapTransaction(*request, metadata, &aMessage, &aMessageInfo, error);  in ProcessReceivedResponse()
1213 …             if (aMessage.GetCode() < kCodeBadRequest && metadata.mBlockwiseReceiveHook != nullptr)  in ProcessReceivedResponse()
1216 …        SendNextBlock2Request(*request, aMessage, aMessageInfo, metadata, totalTransferSize, true);  in ProcessReceivedResponse()
1219                     FinalizeCoapTransaction(*request, metadata, &aMessage, &aMessageInfo, error);  in ProcessReceivedResponse()
1223                     FinalizeCoapTransaction(*request, metadata, &aMessage, &aMessageInfo, error);  in ProcessReceivedResponse()
1229 …                 FinalizeCoapTransaction(*request, metadata, &aMessage, &aMessageInfo, kErrorNone);  in ProcessReceivedResponse()
1248         if ((metadata.mResponseHandler != nullptr) && (metadata.mDestinationAddress.IsMulticast()  in ProcessReceivedResponse()
1250                                                        || (metadata.mObserve && responseObserve)  in ProcessReceivedResponse()
1255 …        metadata.mResponseHandler(metadata.mResponseContext, &aMessage, &aMessageInfo, kErrorNone);  in ProcessReceivedResponse()
1259             FinalizeCoapTransaction(*request, metadata, &aMessage, &aMessageInfo, kErrorNone);  in ProcessReceivedResponse()
1483             ResponseMetadata metadata;  in FindMatchedResponse()  local
1485             metadata.ReadFrom(message);  in FindMatchedResponse()
1487             if (metadata.mMessageInfo.HasSamePeerAddrAndPort(aMessageInfo))  in FindMatchedResponse()
1503     ResponseMetadata metadata;  in EnqueueResponse()  local
1505     metadata.mDequeueTime = TimerMilli::GetNow() + aTxParameters.CalculateExchangeLifetime();  in EnqueueResponse()
1506     metadata.mMessageInfo = aMessageInfo;  in EnqueueResponse()
1514     VerifyOrExit(metadata.AppendTo(*responseCopy) == kErrorNone, responseCopy->Free());  in EnqueueResponse()
1518     mTimer.FireAtIfEarlier(metadata.mDequeueTime);  in EnqueueResponse()
1536         ResponseMetadata metadata;  in UpdateQueue()  local
1538         metadata.ReadFrom(message);  in UpdateQueue()
1540         if ((earliestMsg == nullptr) || (metadata.mDequeueTime < earliestDequeueTime))  in UpdateQueue()
1543             earliestDequeueTime = metadata.mDequeueTime;  in UpdateQueue()
1574         ResponseMetadata metadata;  in HandleTimer()  local
1576         metadata.ReadFrom(message);  in HandleTimer()
1578         if (nextDequeueTime.GetNow() >= metadata.mDequeueTime)  in HandleTimer()
1584         nextDequeueTime.UpdateIfEarlier(metadata.mDequeueTime);  in HandleTimer()