disksing

#include "websocket.h"
#include "../common/string-util.h"

bool ws_handshake_assemble(byte* buf, u_int len, std::string& request, u_int& readLen)
{
    if (len < 4)
        return false;

    //http head is end with an empty line
    if (   buf[len-4] == '\r'