int ParseHttpRequestHeader(Internal.RecvIO recvIO)
{
//start from pos0
int readpos = 0;
int lim = recvIO.BytesTransferred - 1;
int i = 0;
for (; i <= lim; ++i)
{
//just read
if (recvIO.ReadByte(i) == '\r' &&
recvIO.ReadByte(i + 1) == '\n')
{
//each line
//translate
if (i - readpos < 512)
{
//copy
recvIO.CopyTo(readpos, tmpReadBuffer, i - readpos);
//translate
string line = Encoding.UTF8.GetString(tmpReadBuffer, 0, i - readpos);
readpos = i + 2;
i++; //skip \n
//translate header ***
if (line == "")
{
//complete http header
parseState = HttpParsingState.Body;
return(readpos);
}
else
{
//parse header line
AddReqHeader(line);
}
}
else
{
//just skip?
//skip too long line
readpos = i + 2;
i++; //skip \n
}
}
}
return(readpos);
}
void ProcessHtmlPostBody(int readpos, Internal.RecvIO recvIO)
{
//parse body
int transferedBytes = recvIO.BytesTransferred;
int remaining = transferedBytes - readpos;
if (!IsMsgBodyComplete)
{
int wantBytes = ContentLength - contentByteCount;
if (wantBytes <= remaining)
{
//complete here
byte[] buff = new byte[wantBytes];
recvIO.CopyTo(readpos, buff, wantBytes);
//add to req
AddMsgBody(buff, 0, wantBytes);
//complete
this.parseState = HttpParsingState.Complete;
return;
}
else
{
//continue read
if (remaining > 0)
{
byte[] buff = new byte[remaining];
recvIO.CopyTo(readpos, buff, remaining);
//add to req
AddMsgBody(buff, 0, remaining);
}
return;
}
}
this.parseState = HttpParsingState.Complete;
}
/// <summary>
/// add and parse data
/// </summary>
/// <param name="buffer"></param>
internal ProcessReceiveBufferResult LoadData(Internal.RecvIO recvIO)
{
switch (parseState)
{
case HttpParsingState.Head:
{
//find html header
int readpos = ParseHttpRequestHeader(recvIO);
//check if complete or not
if (parseState == HttpParsingState.Body)
{
ProcessHtmlPostBody(readpos, recvIO);
}
}
break;
case HttpParsingState.Body:
ProcessHtmlPostBody(0, recvIO);
break;
case HttpParsingState.Complete:
break;
default:
throw new NotSupportedException();
}
if (parseState == HttpParsingState.Complete)
{
return(ProcessReceiveBufferResult.Complete);
}
else
{
return(ProcessReceiveBufferResult.NeedMore);
}
}
