udp协议客户端服务器间视频传输c源码

UDP协议在客户端和服务器之间进行视频传输的C源码如下：

客户端端代码：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>

#define BUFFER_SIZE 1024
#define SERVER_IP "127.0.0.1"
#define SERVER_PORT 5000

int main() {
  int sockfd;
  struct sockaddr_in server_addr;
  socklen_t addr_len = sizeof(server_addr);
  char buffer[BUFFER_SIZE];
  FILE *fp;

  // 创建UDP套接字
  if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
    perror("Socket creation failed");
    exit(EXIT_FAILURE);
  }

  memset(&server_addr, 0, sizeof(server_addr));
 
  server_addr.sin_family = AF_INET;
  server_addr.sin_port = htons(SERVER_PORT);
   
  if (inet_pton(AF_INET, SERVER_IP, &(server_addr.sin_addr)) <= 0) {
    perror("Invalid address/ Address not supported");
    exit(EXIT_FAILURE);
  }


  if ((fp = fopen("video.mp4", "rb")) == NULL) {
    perror("Failed to open file");
    exit(EXIT_FAILURE);
  }

  while (1) {
    // 读取文件内容到缓冲区
    int n = fread(buffer, 1, sizeof(buffer), fp);

    if (n <= 0) {
      break;
    }

    // 发送缓冲区内容到服务器
    sendto(sockfd, buffer, n, 0, (struct sockaddr*)&server_addr, addr_len);
  }

  printf("File sent successfully.\n");
  fclose(fp);
  close(sockfd);

  return 0;
}

服务器端代码：

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <arpa/inet.h>

#define BUFFER_SIZE 1024
#define SERVER_PORT 5000

int main() {
  int sockfd;
  struct sockaddr_in server_addr, client_addr;
  socklen_t addr_len = sizeof(client_addr);
  char buffer[BUFFER_SIZE];
  FILE *fp;

  // 创建UDP套接字
  if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
    perror("Socket creation failed");
    exit(EXIT_FAILURE);
  }

  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(SERVER_PORT);

  // 将套接字与服务器地址绑定
  if (bind(sockfd, (struct sockaddr*)&server_addr, sizeof(server_addr)) < 0) {
    perror("Bind failed");
    exit(EXIT_FAILURE);
  }

  if ((fp = fopen("received_video.mp4", "wb")) == NULL) {
    perror("Failed to open file");
    exit(EXIT_FAILURE);
  }

  while (1) {
    // 接收客户端发送的数据
    int n = recvfrom(sockfd, buffer, BUFFER_SIZE, 0, (struct sockaddr*)&client_addr, &addr_len);

    if (n <= 0) {
      break;
    }

    // 将接收到的数据写入文件
    fwrite(buffer, 1, n, fp);
  }

  printf("File received successfully.\n");
  fclose(fp);
  close(sockfd);

  return 0;
}

以上是通过UDP协议进行视频传输的基本C源码，其中客户端从本地读取视频文件，将数据逐块发送给服务器端，服务器端接收到数据后将其写入新的文件中。需要注意的是，客户端和服务器端需要使用相同的IP地址和端口号，并且确保服务器端已启动并监听指定端口。