Fixes <http://bugs.gnu.org/21925>.
Regression introduced in 279ec1d.
Reported by Chris Marusich <cmmarusich@gmail.com>.
* guix/ftp-client.scm (ftp-open): Restrict sockets to
SOCK_STREAM/IPPROTO_IP.
* guix/build/download.scm (open-socket-for-uri): Always pass
AI_ADDRCONFIG to 'getaddrinfo' as recommended in the fine Guile
manual.
* guix/ftp-client.scm (ftp-open): Ditto.
* guix/ftp-client.scm (catch-EINPROGRESS): New macro.
(connect*): New procedure.
(ftp-open): Add #:timeout parameter. Use 'connect*' instead of
'connect' and pass it TIMEOUT.
* guix/ftp-client.scm (%ftp-login): Add #\return before #\newline.
Fixes access to some FTP servers, such as
ftp://invisible-island.net ("ProFTPD 1.3.4a Server").
* guix/ftp-client.scm (ftp-open): Let exceptions through.
* guix/scripts/package.scm (waiting): Wrap EXP in a `dynamic-wind', so
the line is always cleared.
* guix/build/http.scm (open-connection-for-uri): New procedure.
(http-fetch): Use it. Pass the result as a #:port argument to
`http-get'.
Add hack to modify the `set-port-encoding!' binding in (web response).
* guix/ftp-client.scm (ftp-open): Add optional `port' parameter,
defaulting to 21. When calling `getaddrinfo', convert PORT to a
string and pass AI_NUMERICSERV when PORT is a number.