UDP文件传输c语言代码

以下是一个简单的UDP文件传输的C语言代码示例：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#define BUF_SIZE 1024

int main(int argc, char *argv[]) {
    if (argc != 4) {
        printf("Usage: %s <server_ip> <server_port> <file_path>\n", argv[0]);
        return 1;
    }

    char *server_ip = argv[1];
    int server_port = atoi(argv[2]);
    char *file_path = argv[3];

    FILE *fp = fopen(file_path, "rb");
    if (fp == NULL) {
        printf("Failed to open file: %s\n", file_path);
        return 1;
    }

    int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
    if (sockfd < 0) {
        printf("Failed to create socket.\n");
        return 1;
    }

    struct sockaddr_in server_addr;
    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(server_port);

    char buf[BUF_SIZE];
    int len;
    while ((len = fread(buf, 1, BUF_SIZE, fp)) > 0) {
        if (sendto(sockfd, buf, len, 0, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
            printf("Failed to send data.\n");
            break;
        }
    }

    fclose(fp);
    close(sockfd);

    printf("File transfer completed.\n");

    return 0;
}

请注意，这只是一个简单的示例代码，实际应用中需要考虑更多的错误处理和安全性问题。