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Assets/BestHTTP/Forms/Implementations/HTTPUrlEncodedForm.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BestHTTP.Forms
+{
+    /// <summary>
+    /// A HTTP Form implementation to send textual values.
+    /// </summary>
+    public sealed class HTTPUrlEncodedForm : HTTPFormBase
+    {
+        private const int EscapeTreshold = 256;
+
+        private byte[] CachedData;
+
+        public override void PrepareRequest(HTTPRequest request)
+        {
+            request.SetHeader("Content-Type", "application/x-www-form-urlencoded");
+        }
+
+        public override byte[] GetData()
+        {
+            if (CachedData != null && !IsChanged)
+                return CachedData;
+
+            StringBuilder sb = new StringBuilder();
+
+            // Create a "field1=value1&field2=value2" formatted string
+            for (int i = 0; i < Fields.Count; ++i)
+            {
+                var field = Fields[i];
+
+                if (i > 0)
+                    sb.Append("&");
+
+                sb.Append(EscapeString(field.Name));
+                sb.Append("=");
+
+                if (!string.IsNullOrEmpty(field.Text) || field.Binary == null)
+                    sb.Append(EscapeString(field.Text));
+                else
+                    // If forced to this form type with binary data, we will create a string from the binary data first and encode this string.
+                    sb.Append(EscapeString(Encoding.UTF8.GetString(field.Binary, 0, field.Binary.Length)));
+            }
+
+            IsChanged = false;
+            return CachedData = Encoding.UTF8.GetBytes(sb.ToString());
+        }
+
+        public static string EscapeString(string originalString)
+        {
+            if (originalString.Length < EscapeTreshold)
+                return Uri.EscapeDataString(originalString);
+            else
+            {
+                int loops = originalString.Length / EscapeTreshold;
+                StringBuilder sb = new StringBuilder(loops);
+
+                for (int i = 0; i <= loops; i++)
+                   sb.Append(i < loops ?
+                                Uri.EscapeDataString(originalString.Substring(EscapeTreshold * i, EscapeTreshold)) :
+                                Uri.EscapeDataString(originalString.Substring(EscapeTreshold * i)));
+                return sb.ToString();
+            }
+        }
+
+    }
+}