Network locations, sometimes also called netloc, are
used within w3browse to specify addresses of proxy-servers
and gateways. They are similar to server-based
URLs, but only the first two parts are taken, optionally terminated by a
slash (/). The general format of such a definition is:
scheme://user:password@host:port/
The default for the optional scheme:// part
is usually http://, except for the network location of
pop3 and smtp servers as they are used for
mail accounts, where the scheme
defaults to the corresponding protocol. In other cases, the scheme may
be one out of the list of server-based URLs.
The mandatory part host allows the DNS name or IP
address of a host to be specified.
The optional part :port may specify a different
port number in case the desired service is not available on the
scheme-specific default port.
The leading optional part user:password@
specifies a user-id and a password for authentication with the proxy-server
or gateway. w3browse generates an appropriate HTTP
Proxy-Authorization: header while connecting to such a server,
but when used together with pop3, pop3s,
smtp or smtps, the authentication features of these
protocols are used instead.
The protocols ftp, ftps, wstp and
wstps cannot be used for connections to proxy-servers or
gateways as they are currently not implemented in w3browse
for this purpose.