Service routines

This is a group of small auxiliary routines that are frequently used by other modules. They are implemented in the files:

• services.h
• services.c

These function include:

• ready_to_read tells when a socket can be read.

• receive_message extracts a full protocol message from the socket.

• clean_buf frees buffers allocated by receive_messsage.

• message_type extracts a message type from a message.

• ready_to_write checks whether a socket is ready to be written into.

• send_message sends a full message over a socket.

• announce_connection prints the information of a new connection to the log file.