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netcpp

其他类别

0.5.0

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网络程序

[한국어]
netcpp 是简单的C++ 网络库。它支持windows和linux平台。

安装

该库支持 vcpkg 端口。如果您已经安装了 vcpkg，则只需使用下面的命令行即可安装此软件包。

vcpkg install netcpp  # In classic mode
vcpkg add port netcpp # In manifest mode

或者克隆此存储库，然后执行下面的命令行。

git clone https://github.com/index1207/netcpp.git && cd netcpp         # clone and move directory
cmake -B build                                                         # CMake Configuration
cmake --build build --config < BUILD_MODE >                              # Build library
cmake --install build --config < BUILD_MODE > --prefix < PATH_TO_INSTALL > # Install to other project

netcpp 提供 CMake 目标：

 find_package (netcpp CONFIG REQUIRED)
target_link_libraries (main PRIVATE netcpp::netcpp)

CMake 选项

选项	描述
`NETCPP_BUILD_SHARED`	通过共享库构建
`NETCPP_TEST`	在构建中包含单元测试

例子

创建一个套接字

 // <net/socket.hpp>
net::socket tcp_socket (net::protocol::tcp); // Create a TCP socket

net::socket udp_socket (net::protocol::udp); // Create a UDP socket

net::socket empty_socket;
empty_socket.create(net::protocol::tcp); // Create a new TCP socket

异步输入/输出

 // <net/context.hpp>
net::socket sock (net::protocol::tcp); // Create a new TCP socket.
net::context connect_ctx; // A context that necessary to async I/O
connect_ctx.endpoint = ENDPOINT; // Specify the endpoint.
connect_ctx.completed = [](net::context* ctx, bool success) { // callback
	if (success)
	{
		std::cout << " Connected " << std::endl;
	}
	else
	{
		std::cout << " Failed to connect " << std::endl;
	}
};
sock.connect(&connect_ctx); // Connect to specified endpoint asynchronously.

基本连接

 // Server
# include < net/Socket.hpp >
# include < iostream >
      
int main ()
{
    net::native::initialize (); // Initialize Native API
  
    net::socket sock (net::protocol::tcp); // Create new TCP socket
    if (!sock. is_open ()) // Validate socket
        return - 1 ;
    if (!sock. bind ( net::endpoint (net::ip_address::loopback, 8085 ))) // Bind the address `tcp://loopback:8085`
        return - 1 ;
    if (!sock. listen ()) // Ready to accept
        return - 1 ;
          
    while ( true )
    {
        auto client = sock. accept (); // accept other client. it returns new client socket.
        std::cout << " Connected n " ;
    }
}

 // Client
# include < net/socket.hpp >
# include < iostream >
  
int main ()
{
    net::native::initialize (); // Initialize Native API
  
    net::socket sock (net::protocol::tcp); // Create new TCP socket
    if (!sock. is_open ()) // Validate socket
        return - 1 ;
    if (!sock. connect ( net::endpoint (net::ip_address::loopback, 8085 ))) // Try to connect to server.
        return - 1 ;
    std::cout << " Connected! " ;
}

域名系统

 // <net/dns.hpp>
net::dns::get_host_name () // get host's name

net::dns::get_host_entry( " www.example.com " ) // get www.example.com's host entry

例外

 try {
	if (!sock. connect (ENDPOINT))
	    throw net::network_exception ( " connect() " );
}
catch (std:: exception & e) {
	std::cout << e. what () << std::endl; // connect(): Cannot assign requested address. [10049]
}