Re: Socket Buffer

"Jim Langston" <>
Wed, 14 Jan 2009 10:27:44 -0800
"Carl Forsman" <> wrote in message

I have a socket class that will receive data and print it out like the

When i debug the lpBuffer in VC++, why the lpBuffer has all those
strange data like I and at the end has some more strange data?

The only data i sent to the socket is only this -

but there is alot more strange character in the end, why?

void Sock::OnDataReceived(const LPBYTE lpBuffer, DWORD dwCount)

for (DWORD i = 0; i < dwCount; i++) {
m_bReceiveBuffer[m_nReceiveIndex] = lpBuffer[i];
m_nReceiveIndex = (m_nReceiveIndex + 1) % RECEIVE_BUFFER_SIZE;
cout<< (const char*)m_bReceiveBuffer;


In the data you are outputting the last byte is 9E. That is not 0. cout <<
char* will keep printing characters until it hits a null character, one with
the value 0. Which you didn't provide, so it keeps showing whatever happens
to be in memory after your valid data til it reaches a null char. You are
sending binary data yet trying to output it as character string data.
Unfortunately when I squeeze apples I dont get orange juice.

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