linux中的socket编程,linux中socket编程
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客戶端：include
#include
#include
#include
#include
#include
#include
#include
#include
#define SERVPORT 1234
#define MAXDATASIZE 1000 /**/ int main(int argc, char *argv[])
{
int sockfd, recvbytes;
int client_fd;
char buf[MAXDATASIZE];
struct hostent *host;
struct sockaddr_in serv_addr;
if(argc < 2)
{
fprintf(stderr,"Please enter the server's hostname!\n ");
exit(1);
}
if((host=gethostbyname(argv[1]))==NULL)
{
herror("gethostbyname error!");
exit(1);
}
if((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
perror("socket creat error!");
exit(1);
}
bzero(&serv_addr, sizeof (serv_addr));
serv_addr.sin_family=AF_INET;
serv_addr.sin_port=htons(SERVPORT);
serv_addr.sin_addr = *((struct in_addr *)host->h_addr);
// bzero(&serv_addr, sizeof (serv_addr));
if(connect(sockfd, (struct sockaddr *)&serv_addr,
sizeof(struct sockaddr)) == -1)
{
perror("connect error!");
exit(1);
}
while(1)
{
if(send(sockfd, "Hello, you are connected! ", 26, 0) == -1)
{ perror("send error !");}
}
close(sockfd);
return 0;
}
服務(wù)器端：
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define SERVPORT 1234 //**//
#define BACKLOG 10 //* *//
#define MAXDATASIZE 1000
int main(void)
{
int sockfd;
int client_fd,recvbytes;
char buf[MAXDATASIZE];
socklen_t sin_size;
struct sockaddr_in my_addr; /* local IP addr*/
//struct sockaddr_in remote_addr; /*clint IP addr*/
if((sockfd=socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
perror("socket creat error!");
exit(1);
}
bzero(&my_addr, sizeof (my_addr));
my_addr.sin_family=AF_INET;
my_addr.sin_port=htons(SERVPORT);
my_addr.sin_addr.s_addr = INADDR_ANY;
if(bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1)
{
perror("bind error!");
exit(1);
}
if(listen(sockfd, BACKLOG) == -1)
{
perror("listen error !");
exit(1);
}
while(1)
{
sin_size = sizeof(struct sockaddr_in);
if((client_fd = accept(sockfd, (struct sockaddr *)&my_addr, &sin_size)) == -1)
{
perror("accept error");
continue;
}
} while (1)
{
printf("ok\n");
if((recvbytes=recv(sockfd, buf, MAXDATASIZE, 0)) ==-1)
{
perror("recv error!");
exit(1);
}
buf[recvbytes] = '\0';
printf("Received: %s\n",buf);
} close(client_fd);
}
初學(xué)socket，請高人指點錯誤，現(xiàn)在不提示錯誤，但是接受不到東西
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