454 lines
13 KiB
C#
454 lines
13 KiB
C#
//------------------------------------------------------------------------------
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// 此代码版权（除特别声明或在XREF结尾的命名空间的代码）归作者本人若汝棋茗所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议，若本仓库没有设置，则按MIT开源协议授权
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// CSDN博客：https://blog.csdn.net/qq_40374647
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// 哔哩哔哩视频：https://space.bilibili.com/94253567
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// Gitee源代码仓库：https://gitee.com/RRQM_Home
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// Github源代码仓库：https://github.com/RRQM
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// API首页：https://touchsocket.net/
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// 交流QQ群：234762506
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// 感谢您的下载和使用
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//------------------------------------------------------------------------------
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using System;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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using TouchSocket.Core;
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using TouchSocket.Sockets;
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namespace TouchSocket.Http
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{
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/// <summary>
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/// HTTP请求定义
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/// </summary>
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public class HttpRequest : HttpBase
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{
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private readonly bool m_isServer;
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private bool m_canRead;
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private ITcpClientBase m_client;
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private byte[] m_content;
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private InternalHttpParams m_forms;
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private InternalHttpParams m_params;
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private readonly InternalHttpParams m_query = new InternalHttpParams();
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private bool m_sentHeader;
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private int m_sentLength;
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/// <summary>
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/// 构造函数
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/// </summary>
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/// <param name="client"></param>
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public HttpRequest(ITcpClientBase client)
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{
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this.m_client = client;
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this.m_isServer = !client.IsClient;
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if (this.m_isServer)
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{
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this.m_canRead = true;
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this.CanWrite = false;
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}
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else
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{
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this.m_canRead = false;
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this.CanWrite = true;
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}
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}
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/// <summary>
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/// 构造函数
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/// </summary>
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public HttpRequest()
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{
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this.m_canRead = false;
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this.CanWrite = false;
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}
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/// <summary>
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/// <inheritdoc/>
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/// </summary>
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public override bool CanRead => this.m_canRead;
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/// <summary>
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/// <inheritdoc/>
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/// </summary>
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public override bool CanWrite { get; }
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/// <summary>
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/// <inheritdoc/>
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/// </summary>
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public override ITcpClientBase Client => this.m_client;
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/// <summary>
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/// 表单数据
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/// </summary>
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public IHttpParams Forms
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{
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get
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{
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if (this.m_isServer)
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{
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this.m_forms ??= new InternalHttpParams();
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if (this.ContentType == @"application/x-www-form-urlencoded")
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{
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GetParameters(this.GetBody(), this.m_forms);
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}
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return this.m_forms;
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}
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else
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{
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return this.m_forms ??= new InternalHttpParams();
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}
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}
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}
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/// <summary>
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/// HTTP请求方式。
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/// </summary>
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public HttpMethod Method { get; set; }
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/// <summary>
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/// Body参数
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/// </summary>
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public IHttpParams Params
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{
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get
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{
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this.m_params ??= new InternalHttpParams();
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return this.m_params;
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}
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}
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/// <summary>
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/// url参数
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/// </summary>
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public IHttpParams Query
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{
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get
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{
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return this.m_query;
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}
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}
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/// <summary>
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/// 相对路径（不含参数）
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/// </summary>
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public string RelativeURL { get; private set; } = "/";
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/// <summary>
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/// Url全地址，包含参数
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/// </summary>
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public string URL { get; private set; } = "/";
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/// <summary>
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/// 构建响应数据。
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/// <para>当数据较大时，不建议这样操作，可直接<see cref="WriteContent(byte[], int, int)"/></para>
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/// </summary>
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/// <param name="byteBlock"></param>
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public void Build(ByteBlock byteBlock)
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{
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this.BuildHeader(byteBlock);
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this.BuildContent(byteBlock);
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}
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/// <summary>
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/// 构建数据为字节数组。
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/// </summary>
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/// <returns></returns>
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public byte[] BuildAsBytes()
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{
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using var byteBlock = new ByteBlock();
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this.Build(byteBlock);
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return byteBlock.ToArray();
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}
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/// <summary>
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/// 设置内容
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/// </summary>
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/// <param name="content"></param>
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public override void SetContent(byte[] content)
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{
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this.m_content = content;
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this.ContentLength = content.Length;
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this.ContentComplated = true;
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}
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/// <summary>
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/// 设置代理Host
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/// </summary>
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/// <param name="host"></param>
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/// <returns></returns>
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public HttpRequest SetProxyHost(string host)
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{
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this.URL = host;
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return this;
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}
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/// <summary>
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/// 设置Url，可带参数
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/// </summary>
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/// <param name="url"></param>
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/// <returns></returns>
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public HttpRequest SetUrl(string url)
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{
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this.URL = url.StartsWith("/") ? url : $"/{url}";
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this.ParseUrl();
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return this;
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}
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/// <summary>
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/// 输出
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/// </summary>
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public override string ToString()
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{
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using (var byteBlock = new ByteBlock())
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{
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this.Build(byteBlock);
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return byteBlock.ToString();
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}
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}
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/// <summary>
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/// <inheritdoc/>
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/// </summary>
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/// <returns></returns>
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public override bool TryGetContent(out byte[] content)
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{
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if (!this.ContentComplated.HasValue)
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{
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if (this.ContentLength == 0)
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{
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this.m_content = new byte[0];
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content = this.m_content;
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this.ContentComplated = true;
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return true;
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}
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try
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{
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using var block1 = new MemoryStream();
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using var block2 = new ByteBlock();
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var buffer = block2.Buffer;
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while (true)
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{
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var r = this.Read(buffer, 0, buffer.Length);
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if (r == 0)
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{
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break;
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}
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block1.Write(buffer, 0, r);
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}
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this.ContentComplated = true;
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this.m_content = block1.ToArray();
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content = this.m_content;
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return true;
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}
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catch
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{
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this.ContentComplated = false;
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content = null;
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return false;
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}
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finally
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{
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this.m_canRead = false;
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}
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}
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else if (this.ContentComplated == true)
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{
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content = this.m_content;
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return true;
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}
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else
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{
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content = null;
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return false;
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}
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}
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/// <summary>
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/// <inheritdoc/>
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/// </summary>
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/// <param name="buffer"></param>
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/// <param name="offset"></param>
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/// <param name="count"></param>
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public override void WriteContent(byte[] buffer, int offset, int count)
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{
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if (!this.CanWrite)
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{
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throw new NotSupportedException("该对象不支持持续写入内容。");
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}
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if (!this.m_sentHeader)
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{
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using (var byteBlock = new ByteBlock())
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{
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this.BuildHeader(byteBlock);
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this.m_client.DefaultSend(byteBlock);
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}
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this.m_sentHeader = true;
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}
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if (this.m_sentLength + count <= this.ContentLength)
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{
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this.m_client.DefaultSend(buffer, offset, count);
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this.m_sentLength += count;
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}
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}
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/// <inheritdoc/>
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public override void Reset()
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{
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base.Reset();
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this.m_canRead = true;
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this.m_content = null;
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this.m_sentHeader = false;
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this.RelativeURL = "/";
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this.URL = "/";
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this.m_sentLength = 0;
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this.m_params?.Clear();
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this.m_query.Clear();
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this.m_forms?.Clear();
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}
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/// <inheritdoc/>
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protected override void Dispose(bool disposing)
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{
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this.m_client = null;
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base.Dispose(disposing);
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}
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/// <summary>
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/// 从内存中读取
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/// </summary>
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protected override void LoadHeaderProterties()
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{
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var first = Regex.Split(this.RequestLine, @"(\s+)").Where(e => e.Trim() != string.Empty).ToArray();
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if (first.Length > 0) this.Method = new HttpMethod(first[0].Trim());
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if (first.Length > 1)
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{
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this.SetUrl(Uri.UnescapeDataString(first[1]));
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}
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if (first.Length > 2)
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{
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var ps = first[2].Split('/');
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if (ps.Length == 2)
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{
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this.Protocols = new Protocol(ps[0]);
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this.ProtocolVersion = ps[1];
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}
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}
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}
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private static void GetParameters(string row, in InternalHttpParams pairs)
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{
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if (string.IsNullOrEmpty(row))
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{
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return;
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}
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var kvs = row.Split('&');
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if (kvs == null || kvs.Length == 0)
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{
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return;
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}
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foreach (var item in kvs)
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{
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var kv = item.SplitFirst('=');
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if (kv.Length == 2)
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{
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pairs.AddOrUpdate(kv[0], kv[1]);
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}
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}
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}
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private void BuildContent(ByteBlock byteBlock)
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{
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if (this.ContentLength > 0)
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{
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byteBlock.Write(this.m_content);
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}
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}
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/// <summary>
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/// 构建响应头部
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/// </summary>
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/// <returns></returns>
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private void BuildHeader(ByteBlock byteBlock)
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{
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var stringBuilder = new StringBuilder();
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string url = null;
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if (!string.IsNullOrEmpty(this.RelativeURL))
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{
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if (this.m_query.Count == 0)
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{
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url = this.RelativeURL;
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}
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else
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{
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var urlBuilder = new StringBuilder();
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urlBuilder.Append(this.RelativeURL);
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urlBuilder.Append('?');
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var i = 0;
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foreach (var item in this.m_query.Keys)
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{
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urlBuilder.Append($"{item}={this.m_query[item]}");
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if (++i < this.m_query.Count)
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{
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urlBuilder.Append('&');
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}
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}
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url = urlBuilder.ToString();
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}
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}
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if (string.IsNullOrEmpty(url))
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{
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stringBuilder.Append($"{this.Method} / HTTP/{this.ProtocolVersion}\r\n");
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}
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else
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{
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stringBuilder.Append($"{this.Method} {url} HTTP/{this.ProtocolVersion}\r\n");
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}
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foreach (var headerkey in this.Headers.Keys)
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{
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stringBuilder.Append($"{headerkey}: ");
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stringBuilder.Append(this.Headers[headerkey] + "\r\n");
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}
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stringBuilder.Append("\r\n");
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byteBlock.Write(Encoding.UTF8.GetBytes(stringBuilder.ToString()));
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}
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/// <inheritdoc/>
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public override int Read(byte[] buffer, int offset, int count)
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{
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if (this.ContentLength == 0)
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{
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return 0;
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}
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return base.Read(buffer, offset, count);
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}
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private void ParseUrl()
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{
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if (this.URL.Contains('?'))
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{
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var urls = this.URL.Split('?');
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if (urls.Length > 0)
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{
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this.RelativeURL = urls[0];
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}
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if (urls.Length > 1)
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{
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this.m_query.Clear();
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GetParameters(urls[1], this.m_query);
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}
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}
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else
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{
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this.RelativeURL = this.URL;
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}
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}
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}
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} |