/// <summary>
///
/// </summary>
/// <param name="headerBody"></param>
/// <param name="param"></param>
/// <returns></returns>
public static bool TryParse(string headerBody, out HttpRequestMatch param)
{
param = null;
var tempParam = new HttpRequestMatch();
//请求头数据的读取类
StringReader reader = new StringReader(headerBody);
StringBuilder tempSb = new StringBuilder();
if (!TryParsePathInfo(reader, tempParam, tempSb))
{
return(false);
}
if (!TryParseHeaderInfo(reader, tempParam, tempSb))
{
return(false);
}
param = tempParam;
return(true);
}
private static bool TryParsePathInfo(StringReader reader, HttpRequestMatch temp_param, StringBuilder temp_sb)
{
temp_sb.Length = 0;
int ch;
//开始解析请求头谓词
while (true)
{
ch = reader.Read();
//回车符继续
if (ch == '\r')
{
continue;
}
//遇到意外的换行符或者文档末尾，结束解析
if (ch == -1 || ch == '\n')
{
return(false);
}
//遇到空格结束
if (ch == ' ')
{
break;
}
temp_sb.Append((char)ch);
}
temp_param.Method = temp_sb.ToString();
bool hasquerystring = false;
//开始解析请求头路径
temp_sb.Length = 0;
while (true)
{
ch = reader.Read();
//回车符继续
if (ch == '\r')
{
continue;
}
//遇到意外的换行符或者文档末尾，结束解析
if (ch == -1 || ch == '\n')
{
return(false);
}
//遇到空格结束
if (ch == ' ')
{
break;
}
if (ch == '?')
{
//路径中包含查询字符串
hasquerystring = true;
break;
}
temp_sb.Append((char)ch);
}
temp_param.Path = temp_sb.ToString();
if (hasquerystring)
{
//路径中包含查询字符串，解析查询参数
temp_sb.Length = 0;
while (true)
{
ch = reader.Read();
//回车符继续
if (ch == '\r')
{
continue;
}
//遇到意外的换行符或者文档末尾，结束解析
if (ch == -1 || ch == '\n')
{
return(false);
}
//遇到空格结束
if (ch == ' ')
{
break;
}
temp_sb.Append((char)ch);
}
//解析查询字符串信息
temp_param.QueryString = WebParamData.FromUrl(temp_sb.ToString());
}
//解析请求头HTTP版本信息
temp_sb.Length = 0;
while (true)
{
ch = reader.Read();
//回车符继续
if (ch == '\r')
{
continue;
}
//遇到意外字符
if (ch == ' ')
{
return(false);
}
//换行符结束
if (ch == '\n')
{
break;
}
temp_sb.Append((char)ch);
}
temp_param.HttpVersion = temp_sb.ToString();
return(true);
}
private static bool TryParseHeaderInfo(StringReader reader, HttpRequestMatch temp_param, StringBuilder temp_sb)
{
//读取的字符缓存
int ch, linecount = 0;
//提供请求头数据缓存
var webParam = new WebParamData();
temp_param.Header = webParam;
string key, value;
//开始读取请求头
while (true)
{
ch = reader.Read();
//遇到文档末尾结束
if (ch == -1)
{
return(true);
}
//遇到回车符继续
if (ch == '\r')
{
continue;
}
//遇到换行符
if (ch == '\n')
{
linecount++;
if (linecount >= 2)
{
//遇到空行结束
return(true);
}
continue;
}
//换行符计数清零
linecount = 0;
#region 解析key
temp_sb.Length = 0;
while (true)
{
temp_sb.Append((char)ch);
ch = reader.Read();
//意外遇到文档末尾结束
if (ch == -1 || ch == '\n')
{
return(false);
}
//遇到回车符继续
if (ch == '\r')
{
continue;
}
if (ch == ':')
{
//遇到分隔符,检查下一个字符是否是空格
ch = reader.Peek();
if (ch != ' ')
{
//不是空格继续
continue;
}
//是空格，获取键值结束,推进读取游标
reader.Read();
key = temp_sb.ToString();
break;
}
}
#endregion
value = reader.ReadLine();
linecount = 1;
webParam[key] = value;
continue;
}
}
