94 lines
3.0 KiB
C#
94 lines
3.0 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net.Http;
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using System.Text;
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using System.Threading.Tasks;
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namespace Rssdp.Infrastructure
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{
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/// <summary>
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/// Parses a string into a <see cref="System.Net.Http.HttpRequestMessage"/> or throws an exception.
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/// </summary>
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public sealed class HttpRequestParser : HttpParserBase<HttpRequestMessage>
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{
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#region Fields & Constants
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private readonly string[] ContentHeaderNames = new string[]
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{
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"Allow", "Content-Disposition", "Content-Encoding", "Content-Language", "Content-Length", "Content-Location", "Content-MD5", "Content-Range", "Content-Type", "Expires", "Last-Modified"
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};
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#endregion
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#region Public Methods
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/// <summary>
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/// Parses the specified data into a <see cref="System.Net.Http.HttpRequestMessage"/> instance.
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/// </summary>
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/// <param name="data">A string containing the data to parse.</param>
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/// <returns>A <see cref="System.Net.Http.HttpRequestMessage"/> instance containing the parsed data.</returns>
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public override System.Net.Http.HttpRequestMessage Parse(string data)
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{
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System.Net.Http.HttpRequestMessage retVal = null;
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try
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{
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retVal = new System.Net.Http.HttpRequestMessage();
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Parse(retVal, retVal.Headers, data);
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return retVal;
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}
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finally
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{
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if (retVal != null)
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retVal.Dispose();
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}
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}
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#endregion
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#region Overrides
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/// <summary>
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/// Used to parse the first line of an HTTP request or response and assign the values to the appropriate properties on the <paramref name="message"/>.
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/// </summary>
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/// <param name="data">The first line of the HTTP message to be parsed.</param>
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/// <param name="message">Either a <see cref="System.Net.Http.HttpResponseMessage"/> or <see cref="System.Net.Http.HttpRequestMessage"/> to assign the parsed values to.</param>
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protected override void ParseStatusLine(string data, HttpRequestMessage message)
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{
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if (data == null) throw new ArgumentNullException("data");
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if (message == null) throw new ArgumentNullException("message");
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var parts = data.Split(' ');
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if (parts.Length < 2) throw new ArgumentException("Status line is invalid. Insufficient status parts.", "data");
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message.Method = new HttpMethod(parts[0].Trim());
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Uri requestUri;
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if (Uri.TryCreate(parts[1].Trim(), UriKind.RelativeOrAbsolute, out requestUri))
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message.RequestUri = requestUri;
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else
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System.Diagnostics.Debug.WriteLine(parts[1]);
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if (parts.Length >= 3)
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{
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message.Version = ParseHttpVersion(parts[2].Trim());
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}
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}
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/// <summary>
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/// Returns a boolean indicating whether the specified HTTP header name represents a content header (true), or a message header (false).
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/// </summary>
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/// <param name="headerName">A string containing the name of the header to return the type of.</param>
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protected override bool IsContentHeader(string headerName)
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{
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return ContentHeaderNames.Contains(headerName, StringComparer.OrdinalIgnoreCase);
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}
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#endregion
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}
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} |