/// <summary>
/// 生成表单和文件
/// </summary>
/// <param name="request"></param>
/// <param name="buffer"></param>
/// <param name="boundary">边界</param>
private static void GenerateMultipartFormAndFiles(HttpRequest request, ReceiveBuffer buffer, string boundary)
{
var doubleCrlf = Encoding.ASCII.GetBytes("\r\n\r\n");
var boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary);
var maxPosition = buffer.Length - Encoding.ASCII.GetBytes("--\r\n").Length;
var files = new List <HttpFile>();
var form = new HttpNameValueCollection();
buffer.Position = buffer.Position + boundaryBytes.Length;
while (buffer.Position < maxPosition)
{
var headLength = buffer.IndexOf(doubleCrlf) + doubleCrlf.Length;
if (headLength < doubleCrlf.Length)
{
break;
}
var head = buffer.ReadString(headLength, Encoding.UTF8);
var bodyLength = buffer.IndexOf(boundaryBytes);
if (bodyLength < 0)
{
break;
}
var mHead = new MultipartHead(head);
if (mHead.IsFile == true)
{
var stream = buffer.ReadArray(bodyLength);
var file = new HttpFile(mHead, stream);
files.Add(file);
}
else
{
var value = HttpUtility.UrlDecode(buffer.ReadString(bodyLength, Encoding.UTF8));
form.Add(mHead.Name, value);
}
buffer.Position = buffer.Position + boundaryBytes.Length;
}
request.Form = form;
request.Files = files.ToArray();
}
/// <summary>
/// 生成表单和文件
/// </summary>
/// <param name="request"></param>
/// <param name="buffer"></param>
/// <param name="boundary">边界</param>
private static void GenerateMultipartFormAndFiles(HttpRequest request, ReceiveBuffer buffer, string boundary)
{
var doubleCrlf = Encoding.ASCII.GetBytes("\r\n\r\n");
var boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary);
var maxPosition = buffer.Length - Encoding.ASCII.GetBytes("--\r\n").Length;
var files = new List<HttpFile>();
var form = new HttpNameValueCollection();
buffer.Position = buffer.Position + boundaryBytes.Length;
while (buffer.Position < maxPosition)
{
var headLength = buffer.IndexOf(doubleCrlf) + doubleCrlf.Length;
if (headLength < doubleCrlf.Length)
{
break;
}
var head = buffer.ReadString(headLength, Encoding.UTF8);
var bodyLength = buffer.IndexOf(boundaryBytes);
if (bodyLength < 0)
{
break;
}
var mHead = new MultipartHead(head);
if (mHead.IsFile == true)
{
var stream = buffer.ReadArray(bodyLength);
var file = new HttpFile(mHead, stream);
files.Add(file);
}
else
{
var value = HttpUtility.UrlDecode(buffer.ReadString(bodyLength, Encoding.UTF8));
form.Add(mHead.Name, value);
}
buffer.Position = buffer.Position + boundaryBytes.Length;
}
request.Form = form;
request.Files = files.ToArray();
}
/// <summary>
/// 解析连接请求信息
/// 如果数据未完整则返回null
/// </summary>
/// <param name="buffer">接收到的原始数量</param>
/// <param name="localEndpoint">服务器的本地终结点</param>
/// <param name="remoteEndpoint">远程端的IP和端口</param>
/// <exception cref="HttpException"></exception>
/// <returns></returns>
public static HttpRequest Parse(ReceiveBuffer buffer, IPEndPoint localEndpoint, IPEndPoint remoteEndpoint)
{
buffer.Position = 0;
var doubleCrlf = Encoding.ASCII.GetBytes("\r\n\r\n");
var headerIndex = buffer.IndexOf(doubleCrlf);
if (headerIndex < 0)
{
return(null); // 数据未完整
}
var headerLength = headerIndex + doubleCrlf.Length;
var headerString = buffer.ReadString(headerLength, Encoding.ASCII);
const string pattern = @"^(?<method>[^\s]+)\s(?<path>[^\s]+)\sHTTP\/1\.1\r\n" +
@"((?<field_name>[^:\r\n]+):\s(?<field_value>[^\r\n]*)\r\n)+" +
@"\r\n";
var match = Regex.Match(headerString, pattern, RegexOptions.IgnoreCase);
if (match.Success == false)
{
throw new HttpException(400, "请求中有语法问题，或不能满足请求");
}
var httpMethod = GetHttpMethod(match.Groups["method"].Value);
var httpHeader = new HttpHeader(match.Groups["field_name"].Captures, match.Groups["field_value"].Captures);
var contentLength = httpHeader.TryGet <int>("Content-Length");
if (httpMethod == HttpMethod.POST && buffer.Length - headerLength < contentLength)
{
return(null); // 数据未完整
}
var request = new HttpRequest
{
LocalEndPoint = localEndpoint,
RemoteEndPoint = remoteEndpoint,
HttpMethod = httpMethod,
Headers = httpHeader
};
request.Url = new Uri("http://localhost:" + localEndpoint.Port + match.Groups["path"].Value);
request.Path = request.Url.AbsolutePath;
request.Query = new HttpNameValueCollection(HttpUtility.UrlDecode(request.Url.Query.TrimStart('?')));
if (httpMethod == HttpMethod.GET)
{
request.InputStrem = new byte[0];
request.Form = new HttpNameValueCollection();
request.Files = new HttpFile[0];
}
else
{
request.InputStrem = buffer.ReadArray(contentLength);
buffer.Position = headerLength;
HttpRequest.GeneratePostFormAndFiles(request, buffer);
}
buffer.Clear(headerLength + contentLength);
return(request);
}
/// <summary>
/// 解析连接请求信息
/// 如果数据未完整则返回null
/// </summary>
/// <param name="buffer">接收到的原始数量</param>
/// <param name="localEndpoint">服务器的本地终结点</param>
/// <param name="remoteEndpoint">远程端的IP和端口</param>
/// <exception cref="HttpException"></exception>
/// <returns></returns>
public static HttpRequest Parse(ReceiveBuffer buffer, IPEndPoint localEndpoint, IPEndPoint remoteEndpoint)
{
buffer.Position = 0;
var doubleCrlf = Encoding.ASCII.GetBytes("\r\n\r\n");
var headerIndex = buffer.IndexOf(doubleCrlf);
if (headerIndex < 0)
{
return null; // 数据未完整
}
var headerLength = headerIndex + doubleCrlf.Length;
var headerString = buffer.ReadString(headerLength, Encoding.ASCII);
const string pattern = @"^(?<method>[^\s]+)\s(?<path>[^\s]+)\sHTTP\/1\.1\r\n" +
@"((?<field_name>[^:\r\n]+):\s(?<field_value>[^\r\n]*)\r\n)+" +
@"\r\n";
var match = Regex.Match(headerString, pattern, RegexOptions.IgnoreCase);
if (match.Success == false)
{
throw new HttpException(400, "请求中有语法问题，或不能满足请求");
}
var httpMethod = GetHttpMethod(match.Groups["method"].Value);
var httpHeader = new HttpHeader(match.Groups["field_name"].Captures, match.Groups["field_value"].Captures);
var contentLength = httpHeader.TryGet<int>("Content-Length");
if (httpMethod == HttpMethod.POST && buffer.Length - headerLength < contentLength)
{
return null; // 数据未完整
}
var request = new HttpRequest
{
LocalEndPoint = localEndpoint,
RemoteEndPoint = remoteEndpoint,
HttpMethod = httpMethod,
Headers = httpHeader
};
request.Url = new Uri("http://localhost:" + localEndpoint.Port + match.Groups["path"].Value);
request.Path = request.Url.AbsolutePath;
request.Query = new HttpNameValueCollection(HttpUtility.UrlDecode(request.Url.Query.TrimStart('?')));
if (httpMethod == HttpMethod.GET)
{
request.InputStrem = new byte[0];
request.Form = new HttpNameValueCollection();
request.Files = new HttpFile[0];
}
else
{
request.InputStrem = buffer.ReadArray(contentLength);
buffer.Position = headerLength;
HttpRequest.GeneratePostFormAndFiles(request, buffer);
}
buffer.Clear(headerLength + contentLength);
return request;
}