IP Blocking Versus Non-blocking

Spam hack attempts, worms, viruses, mailing robots, and many others are the current headaches of internet users nowadays. Apparently, these problems are brought about by certain strong IP addresses. You may wish to utilize an anti-spam software program but it is only temporary.
It is a better idea to block these attempts, but it does not actually guarantee a permanent solution. Blocking and the process of blocking can consume a lot of your time.

Therefore, it is essential first to distinguish clearly the difference between blocking and non-blocking sockets. For example, if the socket is empty which means it does not contain any data that has to be read. If this takes place, either of the following may occur: the system's function can actually wait for a considerable degree of time to such extent that a certain data has been written and can be read on the socket.

On the other hand, the system's function can right away go back to its point of origin. However, the function has to indicate that an error has been done. The error is that, the socket is empty and contains no data at all. The first of the two cases is often regarded as a blocking socket. It means, the system is blocked and will only resume operation upon completion of written data on the socket. The second one is called non-blocking socket and necessitates the system to discern the error done. Upon doing so, the system must also control the situation until such time that operation is ready to resume.