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#if !NET20
using System.Text;using System.Text.RegularExpressions;
namespace Apewer.WebSocket{ internal class RequestParser { const string pattern = @"^(?<method>[^\s]+)\s(?<path>[^\s]+)\sHTTP\/1\.1\r\n" + // request line
@"((?<field_name>[^:\r\n]+):(?([^\r\n])\s)*(?<field_value>[^\r\n]*)\r\n)+" + //headers
@"\r\n" + //newline
@"(?<body>.+)?"; const string FlashSocketPolicyRequestPattern = @"^[<]policy-file-request\s*[/][>]";
private static readonly Regex _regex = new Regex(pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled); private static readonly Regex _FlashSocketPolicyRequestRegex = new Regex(FlashSocketPolicyRequestPattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);
public static HttpRequest Parse(byte[] bytes) { return Parse(bytes, "ws"); }
public static HttpRequest Parse(byte[] bytes, string scheme) { // Check for websocket request header
var body = Encoding.UTF8.GetString(bytes); Match match = _regex.Match(body);
if (!match.Success) { // No websocket request header found, check for a flash socket policy request
match = _FlashSocketPolicyRequestRegex.Match(body); if (match.Success) { // It's a flash socket policy request, so return
return new HttpRequest { Body = body, Bytes = bytes }; } else { return null; } }
var request = new HttpRequest { Method = match.Groups["method"].Value, Path = match.Groups["path"].Value, Body = match.Groups["body"].Value, Bytes = bytes, Scheme = scheme };
var fields = match.Groups["field_name"].Captures; var values = match.Groups["field_value"].Captures; for (var i = 0; i < fields.Count; i++) { var name = fields[i].ToString(); var value = values[i].ToString(); request.Headers[name] = value; }
return request; } }}
#endif
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