1)定义SLICE接口。
module Chat {
interface MessageReceiver {
void onMessage(string sender, string msg);
};
dictionarystring, MessageReceiver*> UserList;
interface Room {
bool login(string user, MessageReceiver* receiver);
void logout(string user);
void sendMessage(string user, string message);
};
};
定义两个接口,Room用于服务器端实现,MessageReceiver用于客户端实现。
使用slice2cpp生成C++文件: chat.h, chat.cpp.
2)服务器端实现。
#include iostream>
#include Ice/Ice.h>
#include 'chat.h'
using std::string;
class ChatRoomI : public Chat::Room {
public:
virtual bool login(const string&, const Chat::MessageReceiverPrx&, const Ice::Current&);
virtual void logout(const string&, const Ice::Current&);
virtual void sendMessage(const string&, const string&, const Ice::Current&);
private:
void broadcast(const string& user, const string& message);
bool notify(const Chat::MessageReceiverPrx& receiver, const string& sender, const string& message);
Chat::UserList users_;
};
bool ChatRoomI::login(const string& user, const Chat::MessageReceiverPrx& receiver, const Ice::Current&) {
if (users_.find(user) != users_.end()) {
return false;
}
users_.insert(Chat::UserList::value_type(user, receiver));
broadcast(user, '---login---');
return true;
}
void ChatRoomI::logout(const string& user, const Ice::Current&) {
users_.erase(user);
broadcast(user, '===logout===');
}
void ChatRoomI::sendMessage(const string& user, const string& message, const Ice::Current&) {
broadcast(user, message);
}
void ChatRoomI::broadcast(const string& user, const string& message) {
Chat::UserList::iterator it = users_.begin(), end = users_.end();
while (it != end) {
if (user != it->first && !notify(it->second, it->first, message))
users_.erase(it++);
else
++it;
}
}
bool ChatRoomI::notify(const Chat::MessageReceiverPrx& receiver, const string& sender, const string& message) {
bool ret = true;
try {
receiver->onMessage(sender, message);
} catch(const std::exception& ex) {
ret = false;
}
return ret;
}
class Server : public Ice::Application {
public:
virtual int run(int argc, char* argv[]) {
Ice::ObjectAdapterPtr adapter = communicator()->createObjectAdapterWithEndpoints(
'Chat.RoomAdapter', 'default -p 10000');
Chat::RoomPtr room = new ChatRoomI;
adapter->add(room, communicator()->stringToIdentity('Chat.Room'));
adapter->activate();
communicator()->waitForShutdown();
return 0;
}
};
int main(int argc, char* argv[]) {
Server app;
return app.main(argc, argv);
}
3)客户端实现。
#include iostream>
#include Ice/Ice.h>
#include 'chat.h'
using std::string;
class ChatUserI : public Chat::MessageReceiver {
public:
virtual void onMessage(const string& user, const string& message, const Ice::Current&) {
std::cout user ' : ' message std::endl;
}
};
class Client : public Ice::Application {
public:
virtual int run(int argc, char* argv[]) {
Chat::RoomPrx chatRoom = Chat::RoomPrx::checkedCast(
communicator()->stringToProxy('Chat.Room:default -p 10000'));
if (!chatRoom) {
std::cout 'Proxy not existed!/n';
return -1;
}
Ice::ObjectAdapterPtr adapter = communicator()->createObjectAdapterWithEndpoints(
'Chat.UserAdapter', 'default');
Chat::MessageReceiverPtr user = new ChatUserI;
adapter->add(user, communicator()->stringToIdentity('Chat.User'));
adapter->activate();
Chat::MessageReceiverPrx userPrx = Chat::MessageReceiverPrx::uncheckedCast(
adapter->createProxy(communicator()->stringToIdentity('Chat.User')));
string name;
std::cout 'Please input user name: ';
std::cin >> name;
if (!chatRoom->login(name, userPrx)) {
std::cout 'login error: User Name already exist!/n';
return 0;
}
std::cout 'login OK!' std::endl;
string message;
while (std::getline(std::cin, message) && message != 'quit') {
chatRoom->sendMessage(name, message);
}
chatRoom->logout(name);
return 0;
}
};
int main(int argc, char* argv[]) {
Client app;
return app.main(argc, argv);
}
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