Fixed parsing code for --ip-header commandline option #758
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Fixed incorrect parsing of the HTTP X-Forwarded-For header when the --ip-header commandline option is used in server mode.
We should not assume that the X-Forwarded-For header (and synonyms) contain only the client's IP address. The header can contain a comma-separated list that also includes proxies in the chain.
See the following:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For