Observe that in the demo code, the client also subscribes to an additional closing event that is published by the MIDI file player at the end of file.

Open the log file in a text editor, and add a unique tag to the very beginning of the file and a corresponding closing tag at the end of the file.

It is needed for the file opening, closing, reading, and writing functions (fopen , fclose , fgets , getc , and so on), for the printf family of functions, and for the setvbuf function.