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bin/gems/http_parser.rb-0.8.1/README.md

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+# http_parser.rb
+
+A simple callback-based HTTP request/response parser for writing http
+servers, clients and proxies.
+
+This gem is built on top of [joyent/http-parser](https://github.com/joyent/http-parser) and its java port [http-parser/http-parser.java](https://github.com/http-parser/http-parser.java).
+
+## Supported Platforms
+
+This gem aims to work on all major Ruby platforms, including:
+
+- MRI 1.8, 1.9 and 2.0; should work on MRI 2.4+
+- Rubinius
+- JRuby
+- win32
+
+## Usage
+
+```ruby
+require "http/parser"
+
+parser = Http::Parser.new
+
+parser.on_headers_complete = proc do
+  p parser.http_version
+
+  p parser.http_method # for requests
+  p parser.request_url
+
+  p parser.status_code # for responses
+
+  p parser.headers
+end
+
+parser.on_body = proc do |chunk|
+  # One chunk of the body
+  p chunk
+end
+
+parser.on_message_complete = proc do |env|
+  # Headers and body is all parsed
+  puts "Done!"
+end
+```
+
+# Feed raw data from the socket to the parser
+`parser << raw_data`
+
+## Advanced Usage
+
+### Accept callbacks on an object
+
+```ruby
+module MyHttpConnection
+  def connection_completed
+    @parser = Http::Parser.new(self)
+  end
+
+  def receive_data(data)
+    @parser << data
+  end
+
+  def on_message_begin
+    @headers = nil
+    @body = ''
+  end
+
+  def on_headers_complete(headers)
+    @headers = headers
+  end
+
+  def on_body(chunk)
+    @body << chunk
+  end
+
+  def on_message_complete
+    p [@headers, @body]
+  end
+end
+```
+
+### Stop parsing after headers
+
+```ruby
+parser = Http::Parser.new
+parser.on_headers_complete = proc{ :stop }
+
+offset = parser << request_data
+body = request_data[offset..-1]
+```