working through 14.3

cookbook/014/03.rb

@@ -0,0 +1,64 @@
+require 'net/http'
+require 'uri'
+
+
+# A simple wrapper method that accepts either strings or URI objects
+# and performs an HTTP GET.
+
+module Net
+    class HTTP
+        def HTTP.get_with_headers(uri, headers=nil)
+            uri = URI.parse(uri) if uri.respond_to? :to_str
+            start(uri.host, uri.port) do |http|
+                return http.get(uri.path, headers)
+            end
+        end
+    end
+end
+
+# Let's get a web page in German.
+
+res = Net::HTTP.get_with_headers('http://www.google.com/',
+                                 {'Accept-Language' => 'de'})
+
+# Check a bit of the body to make sure it's really in German
+s = res.body.size
+puts 'part of body in german=' + res.body[s-3670..s-3470].to_s
+
+
+Net::HTTP.get_with_headers('http://www.google.com/',
+                           {'User-Agent' => 'Ruby Web Browser v1.0'})
+
+
+uncompressed = Net::HTTP.get_with_headers('http://www.cnn.com/')
+puts 'uncompressed body size=' + uncompressed.body.size.to_s
+
+gzipped = Net::HTTP.get_with_headers('http://www.cnn.com/',
+                                     {'Accept-Encoding' => 'gzip'})
+puts 'gzipped Content-Encoding=' + gzipped['Content-Encoding']
+puts 'gzipped body size=' + gzipped.body.size.to_s
+
+require 'zlib'
+require 'stringio'
+
+body_io = StringIO.new(gzipped.body)
+unzipped_body = Zlib::GzipReader.new(body_io).read()
+
+puts 'unzipped body size=' + unzipped_body.size.to_s
+
+
+uri = URI.parse('http://www.google.com/')
+request = Net::HTTP::Get.new(uri.path)
+['en_us', 'en', 'en_gb', 'ja'].each do |language|
+    request.add_field('Accept-Language', language)
+end
+puts 'request[\'Accept-Language\']=' + request['Accept-Language'].to_s
+
+Net::HTTP.start(uri.host, uri.port) do |http|
+    response = http.request(request)
+    puts 'response[\'Content-Type\']=' + response['Content-Type']
+    puts 'response headers:'
+    response.each_key do |key|
+        puts "    #{key}"
+    end
+end