client.h

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/*
 * Copyright 2025 NVIDIA Corporation
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef __CLIENT_H__
#define __CLIENT_H__
 
#include <thread>
#include <unordered_map>
#include <vector>
#include <netinet/in.h>
 
#include "logger.h"
#include "types.h"
 
namespace mesh {
  // @class Client
  // @brief Client in client-server architecture.
  class Client {
    mesh::NodeIdent self;
    std::unordered_map<std::string, mesh::NodeIdent> peers;
    int ai_family{AF_INET};
 
    // map of sending sockets
    std::unordered_map<std::string, int> send_sockets;
 
    // Independent threads for each client
    std::vector<std::thread> threads;
 
    std::shared_ptr<p2p::Logger::p2p_log> p2p_log{nullptr};
 
    void set_sock_addr_(const char *address_str, int port, struct sockaddr_in *saddr);
    int connect_to_server_(const std::string &ip, int port);
 
  public:
    Client(const mesh::NodeIdent &self,
           const std::unordered_map<std::string, mesh::NodeIdent> &servers);
 
    int start();
 
    int send_buf(const std::string &dst, void *buf, size_t len);
 
    int shutdown();
  };
 
} // namespace mesh
 
#endif