0.2.0 • Published 10 years ago
noflo-coap v0.2.0
CoAP for NoFlo
This package provides utility components to create clients and servers for CoAP in the NoFlo Node.js runtime. Based on node-coap.
Package Installation
npm install noflo-coap --saveComponent Usage
ConfigRequest
Create an object with a few request properties
| Port | Name | Datatype | Description |
|---|---|---|---|
| InPort | href | string | String specifying the URL for the request. It should be of the form 'coap://<hostname>:<port>/<path>?<query>' |
| InPort | method | string | A string specifying the CoAP request method. Defaults to 'GET' |
| InPort | confirmable | boolean | Send a CoAP confirmable message (CON). Defaults to true |
| InPort | observe | boolean | Send a CoAP observe message, allowing the streaming of updates from the server. Defaults to false |
| OutPort | url | object | Object with request properties |
You can use noflo-objects to add more properties to the url object.
CreateServer
Create CoAP server
| Port | Name | Datatype | Description |
|---|---|---|---|
| InPort | port | number | Port of remote server. Defaults to 5683 |
| InPort | hostname | string | Domain name or IP address of the server. Defaults to localhost |
| InPort | type | string | Create IPv4 connections (udp4) or IPv6 connections (udp6). Defaults to udp4. |
| InPort | proxy | boolean | Behave like a proxy for incoming requests containing the Proxy-Uri header. Defaults to false |
| OutPort | out | object | Object with server parameters |
ReceiveRequest
On request event
| Port | Name | Datatype | Description |
|---|---|---|---|
| InPort | server | object | Object with server parameters |
| OutPort | observe | boolean | Prepare the server for streaming data to the client. Defaults to false. |
| OutPort | response | object | Object with response parameters |
| OutPort | request | object | Object with request parameters |
ReceiveResponse
On response event
| Port | Name | Datatype | Description |
|---|---|---|---|
| InPort | request | object | Object with request parameters |
| OutPort | response | string | Raw data received from the server |
| OutPort | message | string | Payload of the data received from the server |
SendRequest
Send request
| Port | Name | Datatype | Description |
|---|---|---|---|
| InPort | url | all | object or string. If it is an object, this should have the properties described here. (You can use the ConfigRequest component to build an url object with a few basic properties). If it is a string, this should be of the form 'coap://<hostname>:<port>/<path>?<query>' |
| InPort | data | bang | Data to write in the body of the request |
| InPort | start | bang | Signal to send the request |
| OutPort | request | object | Object with request parameters |
SendResponse
Send response
| Port | Name | Datatype | Description |
|---|---|---|---|
| InPort | message | string | Payload sent to the client |
| InPort | observe | boolean | Prepare the server for streaming data to the client. Defaults to false |
| InPort | response | object | Object with response parameters |
| InPort | start | bang | Signal to send the response |
| OutPort | out | bang | It fires if the message was sent and observe is true. Use it to send the next message to the client |
Examples
| Name | Gist | Flowhub |
|---|---|---|
| CoAP Client | code | example |
| CoAP Server | code | example |