Question

我已经尝试在后台运行我的服务器并在ps下显示，我可以看到我的服务器正在运行，但是当我尝试运行客户端时，正确的服务器应该写入客户端说“成功连接到服务器”但没有任何东西正在运行在那里输出。

我的服务器代码

#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/un.h>
#include <sys/types.h>
#include <sys/socket.h>

#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
#endif
#ifndef PF_LOCAL
#define PF_LOCAL PF_UNIX
#endif

using namespace std;

int main()
{

int serverFd;
int clientFd;
int serverLen;
int clientLen;
string message;
string serverSockAddrPtr;
struct sockaddr* serverSockAddressPnt;
struct sockaddr* clientSockAddressPnt;
struct sockaddr_un serverAddress;
struct sockaddr_un clientAddress;

cout << "" << endl;
cout << "Running server program 'css' ...... " << endl;
cout << "" << endl;


// SOCKET CREATION PART - SERVER
serverFd = socket (AF_LOCAL, SOCK_STREAM, 0);

/* Set domain type */
serverAddress.sun_family = AF_LOCAL;

/* Set name */
strcpy (serverAddress.sun_path, "CServer");


/* GET SIZE OF Server Addres */
serverLen = sizeof serverAddress;
/* GET SIZE OF Client Addres */
clientLen = sizeof clientAddress;

/* Get Server Sock Address Pointer*/
serverSockAddressPnt = (struct sockaddr *) &serverAddress;
/* Get Client Sock Address Pointer*/
clientSockAddressPnt = (struct sockaddr *) &clientAddress;

/* Create file */
bind (serverFd, serverSockAddressPnt , serverLen);

/* listen for connection */
listen (serverFd,5);


cout << "" << endl;
// SOCKET CREATION END - SERVER


while(1)
{
//accept client connection
clientFd = accept(serverFd, clientSockAddressPnt, (socklen_t*)&clientLen);

if(clientFd >= 0)
{
    if(fork() == 0)
    {
        message="Successfully connected to the server";
        write(clientFd,message.c_str(),strlen(message.c_str())+1);
        close(clientFd);
        exit(0);
    }
    else
        close(clientFd);
}

}

return 0;
}

我的客户代码

#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/un.h>
#include <sys/types.h>
#include <sys/socket.h>
#define DEFAULT_PROTOCOL 0
#ifndef AF_LOCAL
#define AF_LOCAL AF_UNIX
#endif
#ifndef PF_LOCAL
#define PF_LOCAL PF_UNIX
#endif

using namespace std;

/* READ LINE FUNCTION*/
int readLine (int fd,char* str)
{
    int n;
    do
    {
        n = read(fd,str,1);
    }while(n>0&& *str++ != 0);
    return(n>0);
}
/* READ LINE FUNCTION END*/


/* READ SERVER FUNCTION*/
void readServer (int fd)
{
    char str[500];
    while (readLine(fd,str))
    {
        printf("%s",str);
    }
}
/* READ SERVER FUNCTION END*/




int main()
{

int clientFd,serverLen,result;
struct sockaddr_un serverAddress;
struct sockaddr* serverSockAddressPnt;

/* Get Server Sock Address Pointer*/
serverSockAddressPnt = (struct sockaddr *) &serverAddress;

/* GET SIZE OF Server Addres */
serverLen = sizeof serverAddress;

clientFd = socket (AF_LOCAL, SOCK_STREAM, DEFAULT_PROTOCOL);
serverAddress.sun_family = AF_LOCAL;
strcpy (serverAddress.sun_path,"CServer");

do
{
    // a loop to keep trying till connected.
    result=connect(clientFd,serverSockAddressPnt,serverLen);
    if(result==-1)
    {
        //wait for 1 second to retry
        sleep(1);
    }

}while(result==-1);
readServer (clientFd);
close (clientFd);
exit(0);

return 0;
}

Answer 1

客户端不知道要连接的服务器。您执行struct sockaddr* serverSockAddressPnt;但这只会将serverSockAddressPnt定义为指向struct sockaddr的指针。但应该初始化或分配要连接的服务器的IP地址。

为什么我的服务器没有向我的客户发送任何东

1 个答案: