server client tcp in C
TCP Server-Client Communication in C
To establish a TCP server-client communication in C, you can follow the steps outlined below:
Include the necessary header files: Begin by including the necessary header files for socket programming in C. These typically include
stdio.h
,stdlib.h
,string.h
, andsys/socket.h
.Create a socket: Use the
socket()
function to create a socket. This function takes three arguments: the address domain (e.g.,AF_INET
for IPv4), the socket type (e.g.,SOCK_STREAM
for TCP), and the protocol (usually set to 0 for the default protocol).Bind the socket: Bind the socket to a specific IP address and port number using the
bind()
function. This function takes the socket file descriptor, a pointer to astruct sockaddr
that specifies the address and port, and the size of the address structure.Listen for connections: Use the
listen()
function to make the server listen for incoming connections. This function takes the socket file descriptor and the maximum number of pending connections as arguments.Accept connections: Use the
accept()
function to accept incoming client connections. This function blocks until a client connects to the server. It returns a new socket file descriptor that represents the connection with the client.Send and receive data: Once a connection is established, you can use the
send()
andrecv()
functions to send and receive data between the server and the client. Thesend()
function sends data from the server to the client, while therecv()
function receives data from the client.Close the sockets: After the communication is complete, close the sockets using the
close()
function to release the resources.
It's important to note that these steps provide a high-level overview of the process. The actual implementation may involve additional error handling, memory allocation, and other considerations.
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