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//-----------------------------------------------------------------------
// <copyright file="MessagingUtilities.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOAuth.Messaging {
using System;
using System.Collections.Generic;
using System.Net;
using System.Text;
using System.Web;
/// <summary>
/// A grab-bag of utility methods useful for the channel stack of the protocol.
/// </summary>
internal class MessagingUtilities {
/// <summary>
/// Adds a set of HTTP headers to an <see cref="HttpResponse"/> instance,
/// taking care to set some headers to the appropriate properties of
/// <see cref="HttpResponse" />
/// </summary>
/// <param name="headers">The headers to add.</param>
/// <param name="response">The <see cref="HttpResponse"/> instance to set the appropriate values to.</param>
internal static void ApplyHeadersToResponse(WebHeaderCollection headers, HttpResponse response) {
if (headers == null) {
throw new ArgumentNullException("headers");
}
if (response == null) {
throw new ArgumentNullException("response");
}
foreach (string headerName in headers) {
switch (headerName) {
case "Content-Type":
response.ContentType = headers[HttpResponseHeader.ContentType];
break;
// Add more special cases here as necessary.
default:
response.AddHeader(headerName, headers[headerName]);
break;
}
}
}
/// <summary>
/// Concatenates a list of name-value pairs as key=value&key=value,
/// taking care to properly encode each key and value for URL
/// transmission. No ? is prefixed to the string.
/// </summary>
/// <param name="args">The dictionary of key/values to read from.</param>
/// <returns>The formulated querystring style string.</returns>
internal static string CreateQueryString(IDictionary<string, string> args) {
if (args == null) {
throw new ArgumentNullException("args");
}
if (args.Count == 0) {
return string.Empty;
}
StringBuilder sb = new StringBuilder(args.Count * 10);
foreach (var p in args) {
sb.Append(HttpUtility.UrlEncode(p.Key));
sb.Append('=');
sb.Append(HttpUtility.UrlEncode(p.Value));
sb.Append('&');
}
sb.Length--; // remove trailing &
return sb.ToString();
}
}
}
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