2001-11-08 Pavel Tsekov <ptsekov@syntrex.com>

2001-11-08  Pavel Tsekov  <ptsekov@syntrex.com>

        * simpsock.h (SimpleSocket::invalidate): Declare new method.
        * simpsock.cc (SimpleSocket::invalidate): Implement new method.
        (SimpleSocket::SimpleSocket): Initialize buf to zero. Do not allocate
        memory for buf in the constructor.
        (SimpleSocket::~SimpleSocket): Use SimpleSocket::invalidate().
        (SimpleSocket::printf): Use SimpleSocket::write() instead of send().
        (SimpleSocket::write): Check object consistency - return -1 on error.
        invalidate() the object on socket write error.
        (SimpleSocket::fill): Check object consistency - return -1 on error.
        invalidate() the object if socket read error is encountered and there
        is no more data available in the internal read buffer.
        Allocate memory for the internal read buffer.
        (SimpleSocket::gets): Return zero (NULL pointer) if error is encountered
        during fill() and no more data is available in the internal read buffer.
        (SimpleSocket::read): Check object consistency - return -1 on error.
        invalidate() the object if socket read error is encountered.
        * nio-ftp.cc (NetIO_FTP:NetIO_FTP): Allow 125 as valid response code to
        the RETR command (fix for MS IIS ftp server 5 - possibly others too).
        (NetIO_FTP::ok): Check if the SimpleSocket object is ok().
        (NetIO_FTP::read): Use NetIO_FTP::ok().
        * nio-http.cc: Check for valid return value of SimpleSocket::gets().
        (NetIO_HTTP::ok): Check if the SimpleSocket object is ok().