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dceejay/gist:72d92bb5fba32b1bc83c

Created February 23, 2015 22:08
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TCP request example
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gistfile1.json
[{"id":"718554ed.8e7aac","type":"inject","name":"","topic":"","payload":"hello","payloadType":"string","repeat":"","crontab":"","once":false,"x":151,"y":457,"z":"6b5c7d92.94a384","wires":[["31a4d6ce.ce5b2a"]]},{"id":"31a4d6ce.ce5b2a","type":"tcp request","server":"192.168.1.10","port":"55555","out":"time","splitc":"100","name":"","x":353,"y":507,"z":"6b5c7d92.94a384","wires":[["4e62b5b1.b19d4c"]]},{"id":"4e62b5b1.b19d4c","type":"function","name":"only pass changes","func":"\ncontext.old = context.old || \"\";\nmsg.payload = msg.payload.toString();\n\nif (msg.payload !== context.old) {\n context.old = msg.payload;\n return msg;\n}\nreturn null;","outputs":1,"valid":true,"x":551,"y":566,"z":"6b5c7d92.94a384","wires":[["f43c9e61.0bc36"]]},{"id":"253b6ef0.dac492","type":"inject","name":"","topic":"","payload":"goodbye","payloadType":"string","repeat":"","crontab":"","once":true,"x":151,"y":532,"z":"6b5c7d92.94a384","wires":[["31a4d6ce.ce5b2a"]]},{"id":"f43c9e61.0bc36","type":"debug","name":"","active":true,"console":"false","complete":"payload","x":705.5,"y":487,"z":"6b5c7d92.94a384","wires":[]}]
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dceejay commented Feb 23, 2015

This was just hitting against a tcp echo server on another machine. the response (echo) is then checked in the function node to see if it was different than previous and if so passes the message on...

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