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Feature #5180

Updated by naruse (Yui NARUSE) over 4 years ago

通常 net/http を使う時は、Net::HTTP.start("ruby-lang.org") などとホスト名を使います。 
 で、Socket がホスト名から IP アドレスを引いて、コネクションが張られます。 
 普通の人はこれで足りるわけですが、ふつうな人はしばしば DNS で引けない IP アドレスに接続したくなります。 
 例えば、ホスト名は "ruby-lang.org" としたいが、IP アドレスは 127.0.0.1 とか。 

 以下のパッチをあてると、 
 Net::HTTP.start("ruby-lang.org", ipaddr: '127.0.0.1') 
 などとできるようになります。 

 ```diff 
 diff --git a/lib/net/http.rb b/lib/net/http.rb 
 index 7b9ec4f..6d034e0 100644 
 --- a/lib/net/http.rb 
 +++ b/lib/net/http.rb 
 @@ -524,7 +524,7 @@ module Net     #:nodoc: 
      # _opt_       :: optional hash 
      # 
      # _opt_ sets following values by its accessor. 
 -      # The keys are ca_file, ca_path, cert, cert_store, ciphers, 
 +      # The keys are ipaddr, ca_file, ca_path, cert, cert_store, ciphers, 
      # close_on_empty_response, key, open_timeout, read_timeout, ssl_timeout, 
      # ssl_version, use_ssl, verify_callback, verify_depth and verify_mode. 
      # If you set :use_ssl as true, you can use https and default value of 
 @@ -542,6 +542,7 @@ module Net     #:nodoc: 
        port, p_addr, p_port, p_user, p_pass = *arg 
        port = https_default_port if !port && opt && opt[:use_ssl] 
        http = new(address, port, p_addr, p_port, p_user, p_pass) 
 +        http.ipaddr = opt[:ipaddr] if opt[:ipaddr] 
 
        if opt 
          if opt[:use_ssl] 
 @@ -575,6 +576,7 @@ module Net     #:nodoc: 
      def initialize(address, port = nil) 
        @address = address 
        @port      = (port || HTTP.default_port) 
 +        @ipaddr = nil 
        @curr_http_version = HTTPVersion 
        @no_keepalive_server = false 
        @close_on_empty_response = false 
 @@ -620,6 +622,17 @@ module Net     #:nodoc: 
      # The port number to connect to. 
      attr_reader :port 
 
 +      # The IP address to connect to/used to connect to 
 +      def ipaddr 
 +        started? ?    @socket.io.peeraddr[3] : @ipaddr 
 +      end 
 + 
 +      # Set the IP address to connect to 
 +      def ipaddr=(addr) 
 +        raise IOError, "ipaddr value changed, but session already started" if started? 
 +        @ipaddr = addr 
 +      end 
 + 
      # Number of seconds to wait for the connection to open. Any number 
      # may be used, including Floats for fractional seconds. If the HTTP 
      # object cannot open a connection in this many seconds, it raises a 
 @@ -945,7 +958,7 @@ module Net     #:nodoc: 
      # without proxy 
 
      def conn_address 
 -        address() 
 +        @ipaddr || address() 
      end 
 
      def conn_port 
 ```

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