ubuntu系统安装socket服务器,Ubuntu上进行socket编程,并且实现通信功能
时间: 2024-02-03 13:11:48 浏览: 31
要在Ubuntu系统上安装Socket服务器,可以使用C/C++编程语言的Socket API来实现。以下是一个基本的Socket服务器的示例代码:
```c++
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.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 opt = 1;
int addrlen = sizeof(address);
char buffer[1024] = {0};
char *hello = "Hello from server";
// Creating socket file descriptor
if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
perror("socket failed");
exit(EXIT_FAILURE);
}
// Forcefully attaching socket to the port 8080
if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))) {
perror("setsockopt");
exit(EXIT_FAILURE);
}
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons(PORT);
// Forcefully attaching socket to the port 8080
if (bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0) {
perror("bind failed");
exit(EXIT_FAILURE);
}
if (listen(server_fd, 3) < 0) {
perror("listen");
exit(EXIT_FAILURE);
}
if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen))<0) {
perror("accept");
exit(EXIT_FAILURE);
}
valread = read(new_socket, buffer, 1024);
printf("%s\n", buffer);
send(new_socket, hello, strlen(hello), 0);
printf("Hello message sent\n");
return 0;
}
```
这个代码创建了一个Socket服务器,它监听端口8080并接受客户端的连接请求。当客户端连接成功后,服务器会打印出客户端发送的消息并发送一条“Hello from server”的消息回去。
要编译这个代码,可以使用以下命令:
```
gcc server.c -o server
```
然后使用以下命令运行服务器:
```
./server
```
接下来,你可以使用客户端代码来连接服务器并与其通信。以下是一个简单的客户端代码示例:
```c++
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.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};
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
printf("\n Socket creation error \n");
return -1;
}
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(PORT);
// Convert IPv4 and IPv6 addresses from text to binary form
if(inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr)<=0) {
printf("\nInvalid address/ Address not supported \n");
return -1;
}
if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
printf("\nConnection Failed \n");
return -1;
}
send(sock, hello, strlen(hello), 0);
printf("Hello message sent\n");
valread = read(sock, buffer, 1024);
printf("%s\n", buffer);
return 0;
}
```
这个代码创建了一个Socket客户端,它连接到服务器的IP地址127.0.0.1和端口8080。当连接成功后,客户端会发送一条“Hello from client”的消息到服务器并等待服务器的回复。
要编译这个代码,可以使用以下命令:
```
gcc client.c -o client
```
然后使用以下命令运行客户端:
```
./client
```
这样,服务器和客户端就可以互相通信了。
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