connect_from

        # Addrinfo.connect_from

(from ruby core)
---
    addrinfo.connect_from([local_addr_args], [opts]) {|socket| ... }
    addrinfo.connect_from([local_addr_args], [opts])

---

creates a socket connected to the address of self.

If one or more arguments given as *local_addr_args*, it is used as the
local address of the socket. *local_addr_args* is given for
family_addrinfo to obtain actual address.

If *local_addr_args* is not given, the local address of the socket is
not bound.

The optional last argument *opts* is options represented by a hash.
*opts* may have following options:

:timeout
:   specify the timeout in seconds.


If a block is given, it is called with the socket and the value of the
block is returned. The socket is returned otherwise.

    Addrinfo.tcp("www.ruby-lang.org", 80).connect_from("0.0.0.0", 4649) {|s|
      s.print "GET / HTTP/1.0\r\nHost: www.ruby-lang.org\r\n\r\n"
      puts s.read
    }

    # Addrinfo object can be taken for the argument.
    Addrinfo.tcp("www.ruby-lang.org", 80).connect_from(Addrinfo.tcp("0.0.0.0", 4649)) {|s|
      s.print "GET / HTTP/1.0\r\nHost: www.ruby-lang.org\r\n\r\n"
      puts s.read
    }