C语言设计实现使用socket(),bind(),connect()函数实现进程间通信,两个进程实现数据交换。
时间: 2023-11-26 13:06:08 浏览: 60
C语言实现socket通信
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好的,下面是一个简单的C语言实现,使用socket(),bind(),connect()函数实现进程间通信,两个进程实现数据交换。
server.c:
```c
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#define PORT 8080
int main(int argc, char const *argv[]) {
int server_fd, new_socket, valread;
struct sockaddr_in address;
int addrlen = sizeof(address);
char buffer[1024] = {0};
char *hello = "Hello from server";
// 创建套接字
if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
perror("socket failed");
exit(EXIT_FAILURE);
}
// 设置地址结构
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(PORT);
// 绑定套接字
if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0) {
perror("bind failed");
exit(EXIT_FAILURE);
}
// 监听端口
if (listen(server_fd, 3) < 0) {
perror("listen failed");
exit(EXIT_FAILURE);
}
// 等待连接请求
if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen)) < 0) {
perror("accept failed");
exit(EXIT_FAILURE);
}
// 接收数据
valread = read(new_socket, buffer, 1024);
printf("%s\n", buffer);
// 发送数据
send(new_socket, hello, strlen(hello), 0);
printf("Hello message sent\n");
return 0;
}
```
client.c:
```c
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#define PORT 8080
int main(int argc, char const *argv[]) {
int sock = 0, valread;
struct sockaddr_in serv_addr;
char *hello = "Hello from client";
char buffer[1024] = {0};
// 创建套接字
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
printf("\n Socket creation error \n");
return -1;
}
// 设置地址结构
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(PORT);
// 将IP地址从文本转换为二进制
if (inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr) <= 0) {
printf("\nInvalid address/ Address not supported \n");
return -1;
}
// 连接到远程套接字
if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
printf("\nConnection Failed \n");
return -1;
}
// 发送数据
send(sock, hello, strlen(hello), 0);
printf("Hello message sent\n");
// 接收数据
valread = read(sock, buffer, 1024);
printf("%s\n", buffer);
return 0;
}
```
编译:
```
gcc -o server server.c
gcc -o client client.c
```
运行:
1. 启动server:`./server`
2. 启动client:`./client`
输出:
```
Hello from client
Hello from server
```
以上是一个简单的C语言实现,使用socket(),bind(),connect()函数实现进程间通信,两个进程实现数据交换。你可以根据自己的需求进行修改和扩展。需要注意的是,在进行进程间通信时,要使用不同的进程来运行不同的代码段,否则会出现无法预料的错误。
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