1.cmakelist.txt
cmake_minimum_required(VERSION 3.16)
project(c_udp_client LANGUAGES C)
add_executable(c_udp_client main.c)
target_link_libraries(c_udp_client wsock32)
include(GNUInstallDirs)
install(TARGETS c_udp_client
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
)
2.测试代码
#include <stdio.h>
#include <stdlib.h>
#include <winsock2.h>
#include <ws2tcpip.h>
// #pragma comment(lib, "ws2_32.lib")
#define PORT 8888
#define BUFFER_SIZE 1024
int main() {
WSADATA wsaData;
int client_socket;
struct sockaddr_in server_addr;
char buffer[BUFFER_SIZE];
// 初始化Winsock库
if (WSAStartup(MAKEWORD(2, 2), &wsaData)!= 0) {
perror("WSAStartup failed");
return 1;
}
// 创建UDP套接字
if ((client_socket = socket(AF_INET, SOCK_DGRAM, 0)) == INVALID_SOCKET) {
perror("Socket creation failed");
WSACleanup();
return 1;
}
// 初始化服务器地址结构
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(PORT);
server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
while (1) {
printf("\nEnter a message to send to the server: ");
fgets(buffer, BUFFER_SIZE, stdin);
// 发送数据到服务器
int send_len = sendto(client_socket, buffer, strlen(buffer), 0,
(struct sockaddr *)&server_addr, sizeof(server_addr));
if (send_len == SOCKET_ERROR) {
perror("Send failed");
WSACleanup();
return 1;
}
// 接收服务器的响应
int recv_len = recvfrom(client_socket, buffer, BUFFER_SIZE - 1, 0, NULL, NULL);
if (recv_len == SOCKET_ERROR) {
perror("Receive failed");
WSACleanup();
return 1;
}
buffer[recv_len] = '\0';
printf("Server response: %s", buffer);
}
closesocket(client_socket);
WSACleanup();
return 0;
}
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3.结果
