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Dušan Borovčanin d6755e4a72 MF-374 - Bring back CoAP adapter (#413)
* Bring old CoAP code back

Signed-off-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com>

* Fix channel ID formatting due to type change

Uncomment error handling for authorization.

Signed-off-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com>

* Update CoAP adapter docs

Signed-off-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com>

* Add copyright headers

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Remove redundant type declaration

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Add CoAP adapter to the list of services

Add CoAp adapter in Makefile services list and fix corresponding documentation.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Refactor CoAP code

Merge multipe `const` block int single and declare consts before vars.
Un-export notFound handler since there is no need to export it.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Update http version endpoint

This separates CoAP and HTTP APIs.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Refactor CoAP POST method handling

This PR is a part of CoAP adapter refactoring that will simplify adapter implementation.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Refactor CoAP adapter

Change CoAP message handling to simplify adapter implementation.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Add backoff timeout for server ping to client

Update CoAP adapter to provide subset of necessary features from
protocol specification.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Fix leaking locked goroutine

In case of the stopped ticker, its channel is NOT closed, so pinging might be left stuck waiting for the stopped ticker to send a notification.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Format code

Use more meaningful name for Handlers map.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Use and stop ticker from the same goroutine

Stop handler Ticker from ping goroutine rather than the cancel goroutine.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Check if subscription already exists in put method

Fix potential leak of handlers providing check inside of put method.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Use MessageID as Observe option

Since MessageID satisfies observe option behaviour, use Message ID
instead of local timestamp. Remove Thicker from handler and use it on
transport layer.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Use name Observer insted of Handler

Name `Observer` is used in protocol specification, so this naming makes
code more self-documenting.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Add CoAP adapter to docker-compose.yml

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Add copyright headers

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Remove unused constants

Fix service name in startup log message.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Add metrics endpoint

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Refactor code

Config fields from main.go should not be exported; minor style changes.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>

* Update authorization URI-Query option

Use `authorization` value in URI-Query option instead of `key`. This
mimics Authorization header in some other protocols (e.g. HTTP). Please
note that this value can be replaced with simple `auth` to save space,
due to constrained URI-Query option size.

Signed-off-by: Dusan Borovcanin <dusan.borovcanin@mainflux.com>
2018-10-31 18:53:25 +01:00

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The MIT License (MIT)
Copyright (c) 2013 Dustin Sallings
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