public static List <RespInfo> GetInfo(byte[] buffer)
{
var result = new List <RespInfo>();
while (true)
{
var respInfo = RespInfo.Parse(buffer);
if (respInfo == null)
{
break;
}
buffer = buffer.Skip(respInfo.BufferCount).ToArray();
result.Add(respInfo);
if (buffer.Count() == 0)
{
break;
}
}
return(result);
}
public static RespInfo Parse(byte[] buffer)
{
if (buffer == null)
{
return(null);
}
var respLineIndex = -1;
for (int i = 0; i < buffer.Length; i++)
{
if (buffer[i] == '\n')
{
respLineIndex = i;
break;
}
}
if (respLineIndex == -1)
{
return(null);
}
RespLineInfo tempRespLine = null;
try
{
tempRespLine = new RespLineInfo(Encoding.ASCII.GetString(buffer, 0, respLineIndex - 1));
}
catch
{
return(null);
}
if (tempRespLine == null)
{
return(null);
}
buffer = buffer.Skip(respLineIndex + 1).ToArray();
int dataCount = (respLineIndex + 1);
int index = -1;
for (int i = 0; i < buffer.Length - 3; i++)
{
if (buffer[i] == '\r' && buffer[i + 1] == '\n' && buffer[i + 2] == '\r' && buffer[i + 3] == '\n')
{
index = i;
break;
}
}
if (index == -1)
{
return(null);
}
dataCount += (index + 4);
var str = Encoding.ASCII.GetString(buffer, 0, index);
var responseHead = new RespHeadInfo(str);
if (responseHead == null)
{
return(null);
}
buffer = buffer.Skip(index + 4).ToArray();
var clen = responseHead.ContentLength;
if (clen == -1)
{
return(null);
}
//不包含Conten-length,有可能是非200,或者是Chunked
if (clen == 0)
{
//解析Checked数据包
if (responseHead.IsChunkedThrans)
{
int dataleng = 0;
int b = 0;
while (true)
{
int chunkHeadLength = 0;
int chunkLeng = GetChunkLength(buffer, out chunkHeadLength);
if (chunkLeng == -1)
{
return(null);
}
if (chunkLeng == 0)
{
dataleng += (chunkHeadLength + 4);
if (buffer.Length < dataleng)
{
return(null);
}
break;
}
dataleng += (chunkHeadLength + 4 + chunkLeng);
if (buffer.Length < dataleng)
{
if (b == 2)
{
return(null);
}
return(null);
}
buffer = buffer.Skip(4 + chunkHeadLength + chunkLeng).ToArray();
b++;
}
dataCount += dataleng;
}
return(new RespInfo()
{
BufferCount = dataCount, RespLine = tempRespLine, RespHead = responseHead
});
}
else if (clen > 0)
{
dataCount += clen;
if (clen <= buffer.Length)
{
var result = new RespInfo()
{
BufferCount = dataCount, RespLine = tempRespLine, RespHead = responseHead
};
return(result);
}
return(null);
}
return(null);
//throw new Exception("length parse exception");
}