SIP002 purposed a new URI scheme, following RFC3986:
SS-URI = "ss://" userinfo "@" hostname ":" port [ "/" ] [ "?" plugin ] [ "#" tag ]
userinfo = websafe-base64-encode-utf8(method ":" password)
/ should be appended if plugin is present, but is optional if only tag is present. Example:
ss://[email protected]:8888/?plugin=url-encoded-plugin-argument-value&unsupported-arguments=should-be-ignored#Dummy+profile+name. This kind of URIs can be parsed by standard libraries provided by most languages.
For plugin argument, we use the similar format as
TOR_PT_SERVER_TRANSPORT_OPTIONS, which have the format like
simple-obfs;obfs=http;obfs-host=www.baidu.com where colons, semicolons, equal signs and backslashes MUST be escaped with a backslash.
Q1: Why parse user info to Base64URL?
A1: To safely encode all the characters in the key string. Note that we never try to "encrypt" your key in the URI.
Q2: Why not parse host name and port number into Base64URL?
A2: As mentioned above, we never try to "encrypt" anything in the URI. Additional parsing of host name and port number is not necessary.
Q3: Why not every client supports SIP002 URI scheme?
A3: Currently, SIP002 is still an optional feature unless the client supports SIP003 plugin.