当我的程序来自 my previous question正在响应客户端,它应该发送加密消息。
当客户端连接时,它会发送一条类似“YourMessage”的消息。现在我想做的是,当客户端连接时,应该以某种方式对这条消息进行编码,并且其他内容会出现在客户端的屏幕上。我该怎么办?
Mã máy chủ:
#include "wind.h"
using namespace std;
//begi
void main()
{
long answer ;
WSAData wsaData;
WORD DLLVERSION;
DLLVERSION = MAKEWORD(2,1);
answer = WSAStartup(DLLVERSION, &wsaData);
SOCKADDR_IN addr;
int addrlen = sizeof(addr);
SOCKET slisten;
SOCKET sConnect;
sConnect = socket(AF_INET,SOCK_STREAM,NULL);
addr.sin_addr.s_addr = inet_addr("127.0.0.1");
addr.sin_family = AF_INET;
addr.sin_port = htons(1234);
slisten = socket(AF_INET,SOCK_STREAM,NULL);
bind(slisten, (SOCKADDR*)&addr, sizeof(addr));
// unlimited clients
listen(slisten, SOMAXCONN);
//conditions
for(;;)
{
cout <<"waiting for client" <<>
if (sConnect = accept(slisten,(SOCKADDR*)&addr, &addrlen))
{
cout<<" A connection was found" <<>
answer = send(sConnect, "YourMessage", 12 ,NULL);
char cMyCharacter = 'A';
int iMyAsciiValue = static_cast(cMyCharacter);
}
}
}
Mã khách hàng:
#include "clnt.h"
using namespace std;
void main ()
{
string confirm;
char message[200];
string strmessage;
long answer;
WSAData wsaData;
WORD DLLVersion;
DLLVersion = MAKEWORD(2,1);
answer = WSAStartup(DLLVersion, &wsaData);
SOCKADDR_IN addr;
int addrlen = sizeof(addr);
SOCKET sconnect;
sconnect = socket(AF_INET, SOCK_STREAM,NULL);
addr.sin_addr.s_addr = inet_addr("127.0.0.1");
addr.sin_family = AF_INET;
addr.sin_port = htons(1234);
cout <<" Do you want to connect to your server?[Y/N]" <<>
cin>> confirm;
if(confirm == "N")
{
exit(1);
}
khác
{
if(confirm == "Y")
{
connect(sconnect, (SOCKADDR*)&addr, sizeof(addr));
answer = recv(sconnect, message, sizeof(message), NULL);
strmessage = message;
cout << strmessage <<>
getchar();
}
}
getchar();
}
它应该像现在一样工作,但不是发送明文字符串,而是发送加密字符串。如果加密使得二进制数据 blob 也只需发送它,但客户端必须在将其显示给用户之前解密。
Tôi là một lập trình viên xuất sắc, rất giỏi!