Initial information

Modify the program in Exercise 28.3.8 so that a binary file can be sent. Note that in a binary file the EOF character can occur at a point in the file. There are two possible methods which can be used to implement this. These are: • Implement a time-out on the characters received. When no characters have been received after, say, 1 second then it is assumed that the EOF has occurred. The receiver will then close the file. • The sender sends some initial information on the filename, number of bytes in the file, date and time, and so on. This could be a fixed format header. • Send a second EOF character whenever there is an EOF character which is not the EOF marker. Thus when the receiver receives two consecutive EOF characters, it simply deletes one of them. When it receives a single EOF character (within a given time) then it knows it is at the end of the file.