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go -server -port 8888

http://127.0.0.1:8888/?data=http://mma.moe
BarcodeRecognize[Import["http://localhost:8888/?data=" <> "http://mma.moe"]]

server console log:
 ✘  ~/tmp/output  goqr -server -port 8888
data

data
http://mma.moe