Often embedded systems have small amount of RAM and flash, so you could have the need of specifically written standard functions.
<"In computing, endianness is the ordering of individually addressable sub-units (words, bytes, or even bits) within a longer data word stored in external memory. The most typical cases are the ordering of bytes within a 16-, 32-, or 64-bit word, where endianness is often simply referred to as byte order.[1] The usual contrast is between most versus least significant byte first, called big-endian and little-endian respectively. Mixed forms are also possible; the ordering of bytes within a 16-bit word may be different from the ordering of 16-bit words within a 32-bit word, for instance; although fairly rare, such cases exist, and may sometimes be referred to as mixed-endian or middle-endian.
Demonizing the Server
A server, to be a real server shall be able to run as a demon, it shall run in background and it shall not be linked to a terminal. To do this I'll add two functions to the simple server:
The Client.
The following code contains the implementation for the UDP client application that can send data to the server explained in the previous article.
The Server.
In this small series I'll show you how to write a simple UDP Client/Server system in a Unix environment using the C language. The server waits data listening on a port specified by the user, if the received data contains ".quit." string the server exits.
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