发送结构中使用recvfrom的（）和SENDTO（） [英] Sending structure using recvfrom() and sendto()

问题描述

我使用的 C语言这是服务器端和客户端一个通用平台

I am using C language which is a common platform for both the server and the client.

我有一个特定类型的结构，其欲从服务器发送到客户端。

I have a structure of a particular type which I want to send to the client from the server.

有关例如

服务器code

 //necessary declarations

struct hostent *hp;

hp=gethostbyname("www.google.com");

sendto(sockDes,&hp,sizeof(hp),0,(struct sockaddr *)&cli_addr,sizeof(cli_addr));

客户端code 的

CLIENT CODE

struct hostent *hp;

msg=recvfrom(mysock,&hp,sizeof(hp),0,(struct sockaddr)&serv_addr,&size_len);

所以，基本上我想从服务器从上面的code片我得到分段错误发送结构以client.But，我不知道whther这样的结构转移是可行的，
有没有任何办法？

So , basically I want to send a structure from the server to the client.But from the above pieces of code I am getting segmentation faults , and I am not sure whther such structure transfer is feasible, IS THERE ANY WAY OUT?

推荐答案

首先，你必须以对结构hostent分配内存的malloc（）。
您可以通过转移SENDTO（）/ recvfrom的（一个结构），但由于结构hostent包含指针​​，这个结构是指针没有任何意义的成员尽快为他们转移到另一端。

First, you have to malloc() in order to allocate memory for the struct hostent. You can transfer a struct through sendto()/recvfrom() but since struct hostent contains pointers, the members of this struct that are pointers have no meaning as soon as they are transfered to the other end.

这篇关于发送结构中使用recvfrom的（）和SENDTO（）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！