linux网络通信文件传输
时间: 2023-11-27 21:05:17 浏览: 35
在Linux下进行网络通信文件传输可以使用socket编程实现。以下是一个简单的例子:
服务端代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define PORT 8888
#define BUFFER_SIZE 1024
int main() {
int server_fd, client_fd;
struct sockaddr_in server_addr, client_addr;
socklen_t client_addr_len = sizeof(client_addr);
char buffer[BUFFER_SIZE];
// 创建socket
if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
perror("socket");
exit(EXIT_FAILURE);
}
// 绑定地址和端口
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
server_addr.sin_port = htons(PORT);
if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) {
perror("bind");
exit(EXIT_FAILURE);
}
// 监听端口
if (listen(server_fd, 10) == -1) {
perror("listen");
exit(EXIT_FAILURE);
}
printf("Server is listening on port %d...\n", PORT);
// 接受客户端连接
if ((client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &client_addr_len)) == -1) {
perror("accept");
exit(EXIT_FAILURE);
}
printf("Client %s:%d connected.\n", inet_ntoa(client_addr.sin_addr), ntohs(client_addr.sin_port));
// 接收文件名
memset(buffer, 0, sizeof(buffer));
if (recv(client_fd, buffer, BUFFER_SIZE, 0) == -1) {
perror("recv");
exit(EXIT_FAILURE);
}
printf("Receiving file: %s\n", buffer);
// 打开文件
FILE *fp = fopen(buffer, "wb");
if (fp == NULL) {
perror("fopen");
exit(EXIT_FAILURE);
}
// 接收文件内容并写入文件
memset(buffer, 0, sizeof(buffer));
int len;
while ((len = recv(client_fd, buffer, BUFFER_SIZE, 0)) > 0) {
fwrite(buffer, sizeof(char), len, fp);
}
printf("File received successfully.\n");
// 关闭文件和socket
fclose(fp);
close(client_fd);
close(server_fd);
return 0;
}
```
客户端代码:
```c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define SERVER_IP "127.0.0.1"
#define PORT 8888
#define BUFFER_SIZE 1024
int main() {
int client_fd;
struct sockaddr_in server_addr;
char buffer[BUFFER_SIZE];
// 创建socket
if ((client_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
perror("socket");
exit(EXIT_FAILURE);
}
// 连接服务器
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET;
server_addr.sin_addr.s_addr = inet_addr(SERVER_IP);
server_addr.sin_port = htons(PORT);
if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) {
perror("connect");
exit(EXIT_FAILURE);
}
printf("Connected to server %s:%d.\n", SERVER_IP, PORT);
// 发送文件名
memset(buffer, 0, sizeof(buffer));
printf("Please enter the file name: ");
scanf("%s", buffer);
if (send(client_fd, buffer, strlen(buffer), 0) == -1) {
perror("send");
exit(EXIT_FAILURE);
}
// 打开文件
FILE *fp = fopen(buffer, "rb");
if (fp == NULL) {
perror("fopen");
exit(EXIT_FAILURE);
}
// 发送文件内容
memset(buffer, 0, sizeof(buffer));
int len;
while ((len = fread(buffer, sizeof(char), BUFFER_SIZE, fp)) > 0) {
if (send(client_fd, buffer, len, 0) == -1) {
perror("send");
exit(EXIT_FAILURE);
}
}
printf("File sent successfully.\n");
// 关闭文件和socket
fclose(fp);
close(client_fd);
return 0;
}
```
运行过程:
1. 编译服务端代码:`gcc -o server.out server.c`
2. 编译客户端代码:`gcc -o client.out client.c`
3. 在一个终端中运行服务端:`./server.out`
4. 在另一个终端中运行客户端:`./client.out`
5. 在客户端中输入要传输的文件名,服务端会接收并保存在当前目录下。