1 files changed, 48 insertions, 0 deletions
diff --git a/sample/dualstack-fetch.rb b/sample/dualstack-fetch.rb
new file mode 100644
index 0000000000..ab8d0914f2
--- /dev/null
+++ b/sample/dualstack-fetch.rb
@@ -0,0 +1,48 @@
+# simple webpage fetcher
+
+# The code demonstrates how a multi-protocol client should be written.
+# TCPsocket is using getaddrinfo() internally, so there should be no problem.
+
+require "socket"
+
+if ARGV.size != 1
+  STDERR.print "requires URL\n"
+  exit
+end
+
+url = ARGV[0]
+if url !~ /^http:\/\/([^\/]+)(\/.*)$/
+  STDERR.print "only http with full hostname is supported\n"
+  exit
+end
+
+# split URL into host, port and path
+hostport = $1
+path = $2
+if (hostport =~ /^(.*):([0-9]+)$/)
+  host = $1
+  port = $2
+else
+  host = hostport
+  port = 80
+end
+if host =~ /^\[(.*)\]$/
+  host = $1
+end
+
+#STDERR.print "url=<#{ARGV[0]}>\n"
+#STDERR.print "host=<#{host}>\n"
+#STDERR.print "port=<#{port}>\n"
+#STDERR.print "path=<#{path}>\n"
+
+STDERR.print "conntecting to #{host} port #{port}\n"
+c = TCPsocket.new(host, port)
+dest = Socket.getnameinfo(c.getpeername,
+		Socket::NI_NUMERICHOST|Socket::NI_NUMERICSERV)
+STDERR.print "conntected to #{dest[0]} port #{dest[1]}\n"
+c.print "GET #{path} HTTP/1.0\n"
+c.print "Host: #{host}\n"
+c.print "\n"
+while c.gets
+  print
+end