用C套接字程序不能编译 [英] Socket program in C cannot compile
问题描述
大家好我正在读一本关于socket编程并有两个codeS客户端和服务器。
Hi guys I was reading a book about the socket programming and there were two codes client and server.
下面是服务器code
here is the server code
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
void error(char *msg)
{
perror(msg);
exit(1);
}
int main(int argc, char *argv[])
{
int sockfd, newsockfd, portno, clilen;
char buffer[256];
struct sockaddr_in serv_addr, cli_addr;
int n;
if (argc < 2) {
fprintf(stderr,"ERROR, no port provided/n");
exit(1);
}
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if(sockfd < 0)
error("ERROR OPENING SOCKET");
bzero((char *) &serv_addr, sizeof(serv_addr));
portno = atoi(argv[1]);
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
serv_addr.sin_port = htons(portno);
if(bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) <0)
error("ERROR on binding");
listen(sockfd,5);
clilen = sizeof(cli_addr);
newsockfd = accept(sockfd, (struct sockaddr *) &cli_addr, &client);
if(newsockfd < 0)
error("ERROR ON ACCEPT");
bzero(buffer,256);
n = read(newsockfd,buffer,255);
if(n < 0)
error("ERROR READING FROM SOCKET");
printf("HERE IS THE MESSAGE: %s\n",buffer);
n = write(newsockfd,"I GOT YOUR MESSAGE",18);
if(n < 0)
error("ERROR WRITING TO SOCKET");
return 0;
}
和这里的客户端code
and here is the client code
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
void error(char *msg)
{
perror(msg);
exit(1);
}
int main(int argc, char *argv[])
{
int sockfd, portno, n;
struct sockaddr_in serv_addr;
struct hostent *server;
char buffer[256];
if(argc < 3) {
fprintf(stderr,"USAGE %s hostname port\n", argv[0]);
}
portno = atoi(argv[2]);
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if(sockfd < 0)
error("ERROR OPENING SOCKET");
server = gethostbyname(argv[1]);
if(server == NULL) {
fprintf(stderr,"ERROR no such host\n");
exit(0);
}
bzero((char *) &serv_addr, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
bcopy((char *)server->h_addr, (char *)&serv_addr.sin_addr.s_addr, server->h_length);
serv_addr.sin_port = htons(portno);
if(connect(sockfd,&serv_addr,sizeof(serv_addr)) < 0)
error("ERROR CONECTING");
printf("Please Enter the message: ");
bzero(buffer,256);
fgets(buffer,255,stdin);
n = write(sockfd,buffer,strlen(buffer));
if(n < 0)
error("ERROR READING THE SOCKET");
printf("%s\n",buffer);
return 0;
}
但是,当我与Visual Studio或涡轮C ++或用Borland C编译++,他们给了我的错误,我已经下载了所有必需的头,但问题依然存在。
But when I compile it with visual studio or turbo c++ or borland c++ they gives me error I have downloaded all the required headers but the problem is still there.
推荐答案
现在的问题是,你正在阅读的标准BSDsocket库的例子。 Windows使用一个稍微不同的socket库。
The problem is you are reading examples with the standard "BSD" socket library. Windows uses a slightly different socket library.
有关更通用的方法,可以口标准的BSD套接字程序(你在你的书阅读的内容)到的的Winsock 。 咨询这里。
For a more general approach, you can port standard BSD sockets programs (what you are reading in your book) to Winsock. Advice here.
或者,如果你想在Windows套接字兼容的系统,您可以从 http://cygwin.com/下载的Cygwin一>并从那里运行程序。 (请务必下载GCC编译器等中的setup.exe程序。)
Or, if you want a socket compatible system in Windows, you can download Cygwin from http://cygwin.com/ and run your program from there. (Be sure to download the GCC compiler etc in the setup.exe program.)
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