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ibm-watson-iot / iot-nodejs

Client libraries and samples for connecting to IBM Watson IoT using nodejs
https://internetofthings.ibmcloud.com
Eclipse Public License 1.0
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Publishing commands with Objects to devices #9

Closed c835722 closed 8 years ago

c835722 commented 8 years ago

Hi, Using the "Publishing commands to devices" code snippet from here https://docs.internetofthings.ibmcloud.com/nodejs/node-js_applications.html That is : var Client = require("ibmiotf").IotfApplication; var config = Client.parseConfigFile(configFilePath); var appClient = new Client(config); appClient.connect(); appClient.on("connect", function () { var myData={'DelaySeconds' : 10} appClient.publishDeviceCommand("myDeviceType","device01", "reboot", "json", myData); }); I get the following exception. How do I pass an Object (msg.payload) to a Device?

Publish: iot-2/type/myDeviceType/id/device01/cmd/reboot/fmt/json, [object Object] Connection Error :: TypeError: Argument must be a string events.js:142 throw er; // Unhandled 'error' event ^

TypeError: Argument must be a string at TypeError (native) at Buffer.write (buffer.js:591:21) at writeStringNoPos (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/mqtt-packet/generate.js:547:10) at publish (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/mqtt-packet/generate.js:273:5) at Object.generate (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/mqtt-packet/generate.js:15:14) at sendPacket (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/mqtt/lib/client.js:31:26) at MqttClient._sendPacket (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/mqtt/lib/client.js:603:7) at MqttClient.publish (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/mqtt/lib/client.js:354:12) at ApplicationClient.publish (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/ibmiotf/dist/clients/ApplicationClient.js:181:21) at ApplicationClient.publishDeviceCommand (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/ibmiotf/dist/clients/ApplicationClient.js:241:14) at ApplicationClient. (/Users/c835722/.usr/local/projects/blinds/blindcommand/lib/application-compiled.js:25:13) at emitNone (events.js:68:13) at ApplicationClient.emit (events.js:167:7) at MqttClient. (/Users/c835722/.usr/local/projects/blinds/blindcommand/node_modules/ibmiotf/dist/clients/ApplicationClient.js:112:17) at emitOne (events.js:83:20) at MqttClient.emit (events.js:170:7)

jeffdare commented 8 years ago

Hi @c835722,

The iot-nodejs internally uses MQTT to connect and publish messages. It supports sending the message in Buffer and String. So this library also supports sending only in Buffer and String.

Please let us know if you have any questions.

Thanks!!

c835722 commented 8 years ago

Hi @jeffdare, Thanks for the response. So by extension those docs need updating then to reflect an example in Buffer and String type.