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我試圖讓用C存儲將客戶端發送到服務器的結構陣列的數據TCP套接字服務器存儲值。那麼,迄今爲止,那麼好。當我打印結構的值,只有最後一個值(鍵)存儲在陣列結構的所有位置! 這是爲什麼?提前致謝!不能在結構(在C socket編程服務器)
客戶端代碼: INT主(INT的argc,字符* argv的[]){
int sock;
struct sockaddr_in server;
//Create socket
sock = socket(AF_INET , SOCK_STREAM , 0);
char *p;
server.sin_addr.s_addr = inet_addr(argv[1]);
int port = strtol(argv[2], &p, 10);
server.sin_port = htons(port);
server.sin_family = AF_INET;
//Connect to remote server
if (connect(sock , (struct sockaddr *)&server , sizeof(server)) < 0)
{
perror("connect failed. Error");
return 1;
}
write(sock , argv[3] ,strlen(argv[3])+1); //send the 3rd argument(which is the input key)
close(sock);
return 0;
}
服務器代碼: 結構key_store { 字符*鍵; }店[1024];
int STORED=0;
void handler(int socket_desc)
{
int client_sock;
char client_message[1024];
client_sock = accept(socket_desc, (struct sockaddr *) NULL, NULL);
printf("Connection accepted\n");
while(read(client_sock , client_message , 100) > 0)
{
store[STORED].key=client_message;
STORED++;
}
close(client_sock);
}
int main(int argc , char *argv[])
{
int socket_desc;
struct sockaddr_in server;
server.sin_port = htons(8888);
//Create socket
socket_desc = socket(AF_INET , SOCK_STREAM , 0);
if (socket_desc == -1)
{
printf("Could not create socket");
}
printf("Socket created\n");
//Prepare the sockaddr_in structure
server.sin_addr.s_addr = inet_addr("127.0.0.1");
server.sin_family = AF_INET;
//Bind
if(bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0)
{
//print the error message
perror("bind failed. Error");
return 1;
}
printf("bind done\n");
//Listen
listen(socket_desc , 5);
int count =0;
while(count < 3)
{
handler(socket_desc);
count++;
}
close(socket_desc);
for (int i=0;i<STORED;i++)
{
printf("KEY --> %s\n",store[i].key); //print the store keys
}
return 0;
}
輸入:
./client 127.0.0.1 8888 123456
./client 127.0.0.1 8888 testkey
./client 127.0.0.1 8888 2017
輸出:
./server
Socket created
bind done
Connection accepted
Connection accepted
Connection accepted
KEY --> 2017
KEY --> 2017
KEY --> 2017
該行需要改變to:store [i] .key = strdup(key);爲什麼要存儲++? for循環中不需要break語句。 –
您的問題無關,與插座或服務器,而不是非常符合結構做。 – immibis