Linux 从 int 到 socklen 的无效转换
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invalid conversion from int to socklen
提问by Andres
Below is my code for Linux. I am implementing a client/server application and below is the server .cpp file.
下面是我的 Linux 代码。我正在实现一个客户端/服务器应用程序，下面是服务器 .cpp 文件。
int main()
{
int serverFd, clientFd, serverLen, clientLen;
struct sockaddr_un serverAddress;/* Server address */
struct sockaddr_un clientAddress; /* Client address */
struct sockaddr* serverSockAddrPtr; /* Ptr to server address */
struct sockaddr* clientSockAddrPtr; /* Ptr to client address */
/* Ignore death-of-child signals to prevent zombies */
signal (SIGCHLD, SIG_IGN);
serverSockAddrPtr = (struct sockaddr*) &serverAddress;
serverLen = sizeof (serverAddress);
clientSockAddrPtr = (struct sockaddr*) &clientAddress;
clientLen = sizeof (clientAddress);
/* Create a socket, bidirectional, default protocol */
serverFd = socket (AF_LOCAL, SOCK_STREAM, DEFAULT_PROTOCOL);
serverAddress.sun_family = AF_LOCAL; /* Set domain type */
strcpy (serverAddress.sun_path, "css"); /* Set name */
unlink ("css"); /* Remove file if it already exists */
bind (serverFd, serverSockAddrPtr, serverLen); /* Create file */
listen (serverFd, 5); /* Maximum pending connection length */
readData();
while (1) /* Loop forever */
{
/* Accept a client connection */
clientFd = accept (serverFd, clientSockAddrPtr, &clientLen);
if (fork () == 0) /* Create child to send recipe */
{
printf ("");
printf ("\nRunner server program. . .\n\n");
printf ("Country Directory Server Started!\n");
close (clientFd); /* Close the socket */
exit (/* EXIT_SUCCESS */ 0); /* Terminate */
}
else
close (clientFd); /* Close the client descriptor */
}
}
}
When i tried to compile it displays an error message which shows.
当我尝试编译时，它会显示一条错误消息。
server.cpp:237:67: error: invalid conversion from ‘int*' to ‘socklen_t*'
server.cpp:237:67: error: initializing argument 3 of ‘int accept(int, sockaddr*, socklen_t*)'
It points to this line
它指向这条线
clientFd = accept (serverFd, clientSockAddrPtr, &clientLen);
I do not actually know how to solve this problem. Thanks in advance to those who helped! :)
我实际上不知道如何解决这个问题。在此先感谢那些提供帮助的人！:)
采纳答案by Marko Kevac
Define clientLen as socklen_t:
将 clientLen 定义为 socklen_t：
socklen_t clientLen;
instead of
代替
int clientLen;
回答by user3698303
Change,
改变，
clientFd = accept (serverFd, clientSockAddrPtr, &clientLen);
to
到
clientFd = accept (serverFd, clientSockAddrPtr,(socklen_t*)&clientLen);
