| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package nmcoap |
| |
| import ( |
| log "github.com/Sirupsen/logrus" |
| "github.com/runtimeco/go-coap" |
| ) |
| |
| type Receiver struct { |
| reassembler *Reassembler |
| } |
| |
| func NewReceiver(isTcp bool) Receiver { |
| r := Receiver{} |
| |
| if isTcp { |
| r.reassembler = NewReassembler() |
| } |
| |
| return r |
| } |
| |
| func (r *Receiver) Rx(data []byte) coap.Message { |
| if r.reassembler != nil { |
| // TCP. |
| tm := r.reassembler.RxFrag(data) |
| if tm == nil { |
| return nil |
| } |
| return tm |
| } else { |
| // UDP. |
| m, err := coap.ParseDgramMessage(data) |
| if err != nil { |
| log.Debugf("CoAP parse failure: %s", err.Error()) |
| return nil |
| } |
| |
| return m |
| } |
| } |