server.cpp

/* in SessionImpl */
void SessionImpl::sendMessage(ByteSeq message, string chatID) {
  auto server = getServerForChan(chatID);
  /* user is the user this session belongs to */
  server->sendMessage(user, message, chatID);
}


/* in our InterServerImpl */
void InterServerImpl::sendMessage(User sender, ByteSeq message, string chatID) {
  for(auto user : getUsersForChan(chatID)) {
    for(auto server : getServerForUser(user)) {
      server->clientAppendMessageToChat(user, message, chatID, sender);
    }
  }
}

void InterServerImpl::clientAppendMessageToChat(User receiver, ByteSeq message, string chatID, User sender) {
  for(auto clientCallback : getCallbacksForUser(receiver)) {
    clientCallback->appendMessageToChat(message, chatID, sender);
  }
}