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How to detect the local IP address?
After the native API proposes the IP, use it directly on the cmd command line to test the command as follows:
curl -x extracted ip: port ipinfo.io
Example:
curl -x 52.207.22.5:27552 ipinfo.io
If the following error message is reported, It can only be used if it is changed to a non-mainland China environment
Chinese ip can't use proxy temporarily, need a non-mainland China environment ip!