2 // FormUrlEncodedContent.cs
5 // Marek Safar <marek.safar@gmail.com>
7 // Copyright (C) 2012 Xamarin Inc (http://www.xamarin.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 using System.Collections.Generic;
30 using System.Net.Http.Headers;
33 namespace System.Net.Http
35 public class FormUrlEncodedContent : ByteArrayContent
37 public FormUrlEncodedContent (IEnumerable<KeyValuePair<string, string>> nameValueCollection)
38 : base (EncodeContent (nameValueCollection))
40 Headers.ContentType = new MediaTypeHeaderValue ("application/x-www-form-urlencoded");
43 static byte[] EncodeContent (IEnumerable<KeyValuePair<string, string>> nameValueCollection)
45 if (nameValueCollection == null)
46 throw new ArgumentNullException ("nameValueCollection");
49 // Serialization as application/x-www-form-urlencoded
51 // Element nodes selected for inclusion are encoded as EltName=value{sep}, where = is a literal
52 // character, {sep} is the separator character from the separator attribute on submission,
53 // EltName represents the element local name, and value represents the contents of the text node.
55 // The encoding of EltName and value are as follows: space characters are replaced by +, and then
56 // non-ASCII and reserved characters (as defined by [RFC 2396] as amended by subsequent documents
57 // in the IETF track) are escaped by replacing the character with one or more octets of the UTF-8
58 // representation of the character, with each octet in turn replaced by %HH, where HH represents
59 // the uppercase hexadecimal notation for the octet value and % is a literal character. Line breaks
60 // are represented as "CR LF" pairs (i.e., %0D%0A).
62 var sb = new List<byte> ();
63 foreach (var item in nameValueCollection) {
67 var data = SerializeValue (item.Key);
72 data = SerializeValue (item.Value);
80 static byte[] SerializeValue (string value)
85 value = Uri.EscapeDataString (value).Replace ("%20", "+");
86 return Encoding.ASCII.GetBytes (value);