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+# Change Log
+
+## [v4.7.1](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.7.1) 
+
+- Fix CoAP stored blockwise message release and list continue
+	Add re-scan routine goto if message is caused user callback
+	This will fix hard fault when blockwise message sending timeouts. This happens cause same list is manipulated through rx callback.
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.7.0...v4.7.1)
+
+## [v4.7.0](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.7.0) 
+
+- Add function that can be used to clear the received blockwise payloads for example in the case of a connection error.
+- Silence compiler warning when CoAP duplicate detection is enabled.
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.6.3...v4.7.0)
+
+## [v4.6.3](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.6.3) 
+
+ - Bug fix: Remove timed out blockwise message from resend queue. If blockwise message was timed out message was still kept in the resend queue which causes unnecessary reconnections on client side.
+ - Documentation: Document all the available macros.
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.6.2...v4.6.3)
+
+## [v4.6.2](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.6.2) 
+
+Do not clear block2 in subsequent block request.
+
+When sending a request with block2 option, eg. indicating need
+for response to be blockwised, copy the block2 option from the
+sent_blockwise list item so that the block2 option will be added
+to all requests. This fixes an issue where previously the block2
+was only sent for the first blockwise request and not for the
+subsequent ones, including the last request. This made the response
+not follow the request block2 option.
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.6.1...v4.6.2)
+
+## [v4.6.1](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.6.1) 
+**Closed issues:**
+-  IOTCLT-2900 - Blockwise handling leaking memory in some error cases
+
+Fix unused parameter compiler warning when blockwise is not used.
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.6.0...v4.6.1)
+
+## [v4.6.0](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.6.0) 
+**New feature:**
+-  Add new API which clears one item from the resend queue based on token
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.5.1...v4.6.0)
+
+## [v4.5.1](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.5.1) 
+**Closed issues:**
+ - IOTCLT-2883 - Blockwise observations not completing
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.5.0...v4.5.1)
+
+## [v4.5.0](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.5.0) 
+**Closed issues:**
+ - IIOTCLT-2769 - mbed-coap: extra response received after registration
+
+Added own flag to enable blockwise support, without setting default blockwise
+payload size. This allows to receive blockwise messages while still sending
+without blockwise.
+
+Fix CoAP request blockwise response handling
+When request is sent, response can have blockwise option set. All requests must
+be stored to the linked list.
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.4.4...v4.5.0)
+
+## [v4.4.4](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.4.4) 
+**Closed issues:**
+ - IOTCLT-2638 [GitHub] hardfault during reconnection retry with Thread
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.4.3...v4.4.4)
+
+## [v4.4.3](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.4.3) 
+**Closed issues:**
+ - IOTCLT-2506 [GitHub] Cannot set registration time if server does not use max age option
+
+Extend blockwise message transfer status to have states for sending as well.
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.4.2...v4.4.3)
+
+## [v4.4.2](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.4.2) 
+**Closed issues:**
+ - IOTCLT-2469 CoAP UDP retransmission does not work for blocks after first one for requests (Eg. registration POST)
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.4.1...v4.4.2)
+
+## [v4.4.1](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.4.1) 
+**Closed issues:**
+ - IOTCLT-2539 Block wise messaging call-backs not working logically
+
+ Improve TCP+TLS transport layer to allow send larger messages without blockwising.
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.4.0...v4.4.1)
+
+## [v4.4.0](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.4.0) 
+**New feature:**
+- Make sn_coap_protocol_send_rst as public needed for CoAP ping sending
+- Allow disabling resendings by defining SN_COAP_DISABLE_RESENDINGS
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.3.0...v4.4.0)
+
+## [v4.3.0](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.3.0) 
+**New feature:**
+-  Add new API which clears the whole sent blockwise message list
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.2.0...v4.3.0)
+
+## [v4.2.0](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.2.0) 
+**New feature:**
+-  Add new API to remove sent blockwise message from the linked list
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.1.1...v4.2.0)
+
+## [v4.1.1](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.1.1) 
+**Closed issues:**
+-  IOTCLT-2203 mbed-coap does not handle PUT or POST if they indicate a smaller block size preference (fixed regression) 
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.1.0...v4.1.1)
+
+## [v4.1.0](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.1.0) 
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.0.10...v4.1.0)
+
+ **New feature:**
+  - New API to disable automatic GET(BLOCK2) request sending.
+
+ **Closed issues:**
+  -  IOTCLT-2203 mbed-coap does not handle PUT or POST if they indicate a smaller block size preference 
+
+## [v4.0.10](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.0.10) 
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.0.9...v4.0.10)
+
+ **Closed issues:**
+  -  IOTMAC-615 Node mDS registration failure during OTA transfer
+
+## [v4.0.9](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.0.9) 
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.0.8...v4.0.9)
+
+ **Closed issues:**
+  -  IOTCLT-1899 Maximum COAP message resending buffer size limited to 255 bytes
+  -  IOTCLT-1888 Problem with blockwise transfers that are even increments of block_size
+
+## [v4.0.8](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.0.8) 
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.0.4...v4.0.8)
+
+ **Closed issues:**
+  -  IOTCLT-1880 Lwm2m blockwise data transfer (using Block1 option) with Leshan not working
+  -  IOTCLT-1885 Return 4.08 Request Entity Incomplete on Block transfer errors
+  -  IOTCLT-1883 Detected message duplications stop mbed-client
+
+## [v4.0.4](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.0.4) 
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.0.3...v4.0.4)
+
+ **Closed issues:**
+	- https://github.com/ARMmbed/mbed-client/issues/481 - Obs Con blockwise fails to transmit 2nd block
+
+## [v4.0.3](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.0.3)
+
+-[Full Changelog](https://github.com/ARMmbed/mbed-coap/compare/v4.0.2...v4.0.3)
+
+ **New feature**
+ 		
+ 	- CoAP Protocol Confirmable resend fix and minor memory optimization (IOTMAC-328)
+ 		
+ **Closed issues:**
+ 		
+ 	- IOTCLT-1439 - stuck in while loop
+
+## [v4.0.0](https://github.com/ARMmbed/mbed-coap/releases/tag/v4.0.2)
+
+**New feature**
+
+ - Initial release of mbed-coap separated from mbed-client-c