External References
HTTP RFCs
RFC 1738: ftp://ftp.rfc-editor.org/in-notes/rfc1738.txt
RFC 1945: ftp://ftp.rfc-editor.org/in-notes/rfc1945.txt
RFC 2045: ftp://ftp.rfc-editor.org/in-notes/rfc2045.txt
RFC 2145: ftp://ftp.rfc-editor.org/in-notes/rfc2145.txt
RFC 2616: ftp://ftp.rfc-editor.org/in-notes/rfc2616.txt