What is a simple C or C TCP server and client example

Question

I need to quickly implement a very small C or C   TCP server client solution  This is simply to transfer literally an array of bytes from one computer to another - doesn t need to be scalable   over-complicated  The simpler the better  Quick and dirty if you can   I tried to use the code from this tutorial  but I couldn t get it to build using g   in Linux  http   www linuxhowtos org C C   socket htm  If possible  I d like to avoid 3rd party libraries  as the system I m running this on is quite restricted  This must be C or C   as the existing application is already implemented   Thanks to emg-2 s answer  I managed to make the above mentioned code sample compatible with C   using the following steps   Add these headers to both client and server    include  lt cstdlib gt   include  lt cstring gt   include  lt unistd h gt    In server c  change the type of clilen to socklen t   int sockfd  newsockfd  portno    clilen    socklen t clilen    In client c  change the following line   if  connect sockfd  amp serv addr sizeof serv addr    lt  0            To   if  connect sockfd  const sockaddr   amp serv addr sizeof serv addr    lt  0

User · Answer

try boost  asio lib  http   www boost org doc libs 1 36 0 doc html boost asio html  it have lot examples

User · Answer

Here are some examples for   1  Simple 2  Fork 3  Threads  based server    http   www martinbroadhurst com server-examples html

User · Answer

Although many year ago  clsocket seems a really nice small cross-platform  Windows  Linux  Mac OSX   https   github com DFHack clsocket

User · Answer

If the code should be simple  then you probably asking for C example based on traditional BSD sockets  Solutions like boost  asio are imho quite complicated when it comes to short and simple  hello world  example   To compile examples you mentioned you must make simple fixes  because you are compiling under C   compiler  I m referring to following files  http   www linuxhowtos org data 6 server c http   www linuxhowtos org data 6 client c from  http   www linuxhowtos org C C   socket htm   Add following includes to both files    include  lt cstdlib gt   include  lt cstring gt   include  lt unistd h gt   In client c  change the line   if  connect sockfd  amp serv addr sizeof serv addr    lt  0            to   if  connect sockfd  const sockaddr   amp serv addr sizeof serv addr    lt  0             As you can see in C   an explicit cast is needed

User · Answer

I ve used Beej s Guide to Network Programming in the past   It s in C  not C    but the examples are good   Go directly to section 6 for the simple client and server example programs

[c++] What is a simple C or C++ TCP server and client example?

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