socket傳送結構體

客套話不說了：socket中的send函式可以傳送字串，不能直接傳送結構體，

自己理解：結構體即記憶體中一段連續的記憶體，這樣send中可以傳送結構體指標上**：

**功能：客戶端傳送給服務端乙個結構體，服務端返回客戶端一字串

客戶端** client.c

#include

#define port

4321

#define buffer_size 1024

typedef struct bat

my;int main(int argc, char *argv)

//位址解析函式

if ((host = gethostbyname(argv[1])) == null)

memset(buf, 0, sizeof(buf));

sprintf(buf, "%s", argv[2]);

//建立socket

if ((sockfd = socket(af_inet, sock_stream, 0)) == -1)

//設定sockaddr_in 結構體相關引數

serv_addr.sin_family = af_inet;

serv_addr.sin_port = htons(port);

serv_addr.sin_addr = *((struct in_addr *)host->h_addr);

bzero(&(serv_addr.sin_zero), 8);

//呼叫connect函式主動發起對伺服器的連線

if(connect(sockfd,(struct sockaddr *)&serv_addr,sizeof(struct sockaddr))== -1)

my buff;

strcpy(buff.group,"bat001");

buff.num=24;

//發訊息給伺服器端

if ((sendbytes = send(sockfd,&buff,sizeof(buff), 0)) == -1)

memset(buf,0,sizeof(buf));

//接收來自伺服器端的返回

if ((recvbytes = recv(sockfd,buf,sizeof(buf), 0)) == -1)

printf("received a message : %s\n",buf);

close(sockfd);

exit(0);

}伺服器端**server.c

#include

#define port

4321

#define buffer_size

1024

#define max_que_conn_nm

5typedef struct bat

my;int main()

printf("socket id = %d\n",sockfd);

//設定sockaddr_in 結構中相關引數

server_sockaddr.sin_family = af_inet;

server_sockaddr.sin_port = htons(port);

server_sockaddr.sin_addr.s_addr = inaddr_any;

bzero(&(server_sockaddr.sin_zero), 8);

int i = 1;//允許重複使用本位址與套接字進行繫結

setsockopt(sockfd, sol_socket, so_reuseaddr, &i, sizeof(i));

//呼叫bind()函式

if (bind(sockfd, (struct sockaddr *)&server_sockaddr,

sizeof(struct sockaddr)) == -1)

printf("bind success!\n");

//呼叫listen()函式，建立未處理請求的佇列

if (listen(sockfd, max_que_conn_nm) == -1)

while(1)

my buff;

//呼叫recv()函式接收客戶端請求

memset(buf , 0, sizeof(buf));

if ((recvbytes = recv(client_fd,&buff,sizeof(buff), 0)) == -1)

printf("received a message: group=%s num=%d\n", buff.group,buff.num);

memset(buf , 0, sizeof(buf));

strcpy(buf,"return to client");

if ((sendbytes = send(client_fd,buf, strlen(buf),0)) == -1)

printf("send message :%s\n",buf);

} close(sockfd);

exit(0);

}gcc client.c -o client

gcc server.c -o server

開兩個終端server終端：./server

socket id = 3

bind success!

listening....

received a message: group=bat001 num=24

send message :return to client

listening....

client終端：./client localhost hello,server

received a message : return to client

socket通訊傳送結構體

socket通訊可以直接傳送結構體！示例傳送端 c sharp view plain copy struct student struct student student1 接受端 c sharp view plain copy struct student struct student stud...

c c 通過socket傳送結構體

c c 通過socket傳送結構可以直接先將結構轉化到記憶體中，再通過send直接傳送。首先，我們建立乙個結構體。struct usrdata write cfg fd,para,sizeof hd4100 rec t hd4100 rec t是自定義的結構 close cfg fd printf ...

c c 通過socket傳送結構體

c c 通過socket傳送結構體少游冰雪世界 c c 通過socket傳送結構可以直接先將結構轉化到記憶體中，再通過send直接傳送。首先，我們建立乙個結構體。struct usrdata write cfg fd,para,sizeof hd4100 rec t hd4100 rec t是自定...

socket傳送結構體

socket通訊傳送結構體

c c 通過socket傳送結構體

c c 通過socket傳送結構體

相關推薦