我可以使用 char 数组通过套接字发送/接收数据,但无法找到发送结构的方法。我发现了很多文章,但它们很难理解。据我所知,我们必须使用一个名为 snprintf 的函数来制作数据包,然后再使用其他一些函数来恢复它。请我正在寻找一种非常可靠但简单的数据传输方式。这是我编写的一些代码,用于通过 char 数组发送
int main()
{
int listenfd = 0, connfd = 0;
struct sockaddr_in serv_addr;
char sendBuff[1025];
time_t ticks;
printf("\n\n...Server is starting up...\n\n");
listenfd = socket(AF_INET, SOCK_STREAM, 0);
memset(&serv_addr, '0', sizeof(serv_addr));
memset(sendBuff, '0', sizeof(sendBuff));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_addr.sin_port = htons(4567);
bind(listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
printf("Bind successful\n");
listen(listenfd, 10);
printf("Ready: Waiting for clients\n");
while(1)
{
connfd = accept(listenfd, (struct sockaddr*)NULL, NULL);
ticks = time(NULL);
snprintf(sendBuff, sizeof(sendBuff), "%.24s\r\n", ctime(&ticks));
write(connfd, sendBuff, strlen(sendBuff));
close(connfd);
sleep(1);
}
客户
int main(int argc, char *argv[])
{
int sockfd = 0 /*Socket Descriptor*/, n = 0;
char recvBuff[1024];
struct sockaddr_in serv_addr;
if(argc != 2) {
printf("\n Usage: %s <ip of server> \n",argv[0]);
return 1;
}
memset(recvBuff, '0',sizeof(recvBuff));
if((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
printf("\n Error : Could not create socket \n");
return 1;
}
memset(&serv_addr, '0', sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(4567);
if(inet_pton(AF_INET, argv[1], &serv_addr.sin_addr)<=0) {
printf("\n inet_pton error occured\n");
return 1;
}
if( connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) {
printf("\n Error : Connect Failed \n");
return 1;
}
while ( (n = read(sockfd, recvBuff, sizeof(recvBuff)-1)) > 0) {
recvBuff[n] = 0;
if(fputs(recvBuff, stdout) == EOF) {
printf("\n Error : Fputs error\n");
}
}
if(n < 0) {
printf("\n Read error \n");
}
return 0;
}