HTML Diff ssl/server.cpp

src/examples/cpp03/ssl/server.cpp		src/examples/cpp11/ssl/server.cpp
⋮		⋮
1	//	1	//
2	//·server.cpp	2	//·server.cpp
3	//·~~~~~~~~~~	3	//·~~~~~~~~~~
4	//	4	//
5	//·Copyright·(c)·2003-2021·Christopher·M.·Kohlhoff·(chris·at·kohlhoff·dot·com)	5	//·Copyright·(c)·2003-2021·Christopher·M.·Kohlhoff·(chris·at·kohlhoff·dot·com)
6	//	6	//
7	//·Distributed·under·the·Boost·Software·License,·Version·1.0.·(See·accompanying	7	//·Distributed·under·the·Boost·Software·License,·Version·1.0.·(See·accompanying
8	//·file·LICENSE_1_0.txt·or·copy·at·http://www.boost.org/LICENSE_1_0.txt)	8	//·file·LICENSE_1_0.txt·or·copy·at·http://www.boost.org/LICENSE_1_0.txt)
9	//	9	//
10		10
11	#include·<cstdlib>	11	#include·<cstdlib>
		12	#include·<functional>
12	#include·<iostream>	13	#include·<iostream>
13	#include·<boost/bind/bind.hpp>
14	#include·"asio.hpp"	14	#include·"asio.hpp"
15	#include·"asio/ssl.hpp"	15	#include·"asio/ssl.hpp"
16		16
17	typedef·asio::ssl::stream<asio::ip::tcp::socket>·ssl_socket;	17	using·asio::ip::tcp;
18		18
19	class·session	19	class·session·:·public·std::enable_shared_from_this<session>
20	{	20	{
21	public:	21	public:
22	··session(asio::io_context&·io_context,	22	··session(asio::ssl::stream<tcp::socket>·socket)
23	······asio::ssl::context&·context)	23	····:·socket_(std::move(socket))
24	····:·socket_(io_context,·context)
25	··{	24	··{
26	··}	25	··}
27		26
28	··ssl_socket::lowest_layer_type&·socket()
29	··{
30	····return·socket_.lowest_layer();
31	··}
32
33	··void·start()	27	··void·start()
34	··{	28	··{
35	····socket_.async_handshake(asio::ssl::stream_base::server,	29	····do_handshake();
36	········boost::bind(&session::handle_handshake,·this,
37	··········asio::placeholders::error));
38	··}
39
40	··void·handle_handshake(const·asio::error_code&·error)
41	··{
42	····if·(!error)
43	····{
44	······socket_.async_read_some(asio::buffer(data_,·max_length),
45	··········boost::bind(&session::handle_read,·this,
46	············asio::placeholders::error,
47	············asio::placeholders::bytes_transferred));
48	····}
49	····else
50	····{
51	······delete·this;
52	····}
53	··}
54
55	··void·handle_read(const·asio::error_code&·error,
56	······size_t·bytes_transferred)
57	··{
58	····if·(!error)
59	····{
60	······asio::async_write(socket_,
61	··········asio::buffer(data_,·bytes_transferred),
62	··········boost::bind(&session::handle_write,·this,
63	············asio::placeholders::error));
64	····}
65	····else
66	····{
67	······delete·this;
68	····}
69	··}	30	··}
70		31
71	··void·handle_write(const·asio::error_code&·error)	32	private:
		33	··void·do_handshake()
72	··{	34	··{
73	····if·(!error)	35	····auto·self(shared_from_this());
74	····{	36	····socket_.async_handshake(asio::ssl::stream_base::server,·
75	······socket_.async_read_some(asio::buffer(data_,·max_length),	37	········[this,·self](const·std::error_code&·error)
76	··········boost::bind(&session::handle_read,·this,	38	········{
77	············asio::placeholders::error,	39	··········if·(!error)
78	············asio::placeholders::bytes_transferred));	40	··········{
79	····}	41	············do_read();
80	····else	42	··········}
81	····{	43	········});
82	······delete·this;	44	··}
83	····}	45
		46	··void·do_read()
		47	··{
		48	····auto·self(shared_from_this());
		49	····socket_.async_read_some(asio::buffer(data_),
		50	········[this,·self](const·std::error_code&·ec,·std::size_t·length)
		51	········{
		52	··········if·(!ec)
		53	··········{
		54	············do_write(length);
		55	··········}
		56	········});
		57	··}
		58
		59	··void·do_write(std::size_t·length)
		60	··{
		61	····auto·self(shared_from_this());
		62	····asio::async_write(socket_,·asio::buffer(data_,·length),
		63	········[this,·self](const·std::error_code&·ec,
		64	··········std::size_t·/length/)
		65	········{
		66	··········if·(!ec)
		67	··········{
		68	············do_read();
		69	··········}
		70	········});
84	··}	71	··}
85		72
86	private:	73	··asio::ssl::stream<tcp::socket>·socket_;
87	··ssl_socket·socket_;	74	··char·data_[1024];
88	··enum·{·max_length·=·1024·};
89	··char·data_[max_length];
90	};	75	};
91		76
92	class·server	77	class·server
93	{	78	{
94	public:	79	public:
95	··server(asio::io_context&·io_context,·unsigned·short·port)	80	··server(asio::io_context&·io_context,·unsigned·short·port)
96	····:·io_context_(io_context),	81	····:·acceptor_(io_context,·tcp::endpoint(tcp::v4(),·port)),
97	······acceptor_(io_context,
98	··········asio::ip::tcp::endpoint(asio::ip::tcp::v4(),·port)),
99	······context_(asio::ssl::context::sslv23)	82	······context_(asio::ssl::context::sslv23)
100	··{	83	··{
101	····context_.set_options(	84	····context_.set_options(
102	········asio::ssl::context::default_workarounds	85	········asio::ssl::context::default_workarounds
103	········\|·asio::ssl::context::no_sslv2	86	········\|·asio::ssl::context::no_sslv2
104	········\|·asio::ssl::context::single_dh_use);	87	········\|·asio::ssl::context::single_dh_use);
105	····context_.set_password_callback(boost::bind(&server::get_password,·this));	88	····context_.set_password_callback(std::bind(&server::get_password,·this));
106	····context_.use_certificate_chain_file("server.pem");	89	····context_.use_certificate_chain_file("server.pem");
107	····context_.use_private_key_file("server.pem",·asio::ssl::context::pem);	90	····context_.use_private_key_file("server.pem",·asio::ssl::context::pem);
108	····context_.use_tmp_dh_file("dh2048.pem");	91	····context_.use_tmp_dh_file("dh2048.pem");
109		92
110	····start_accept();	93	····do_accept();
111	··}	94	··}
112		95
		96	private:
113	··std::string·get_password()·const	97	··std::string·get_password()·const
114	··{	98	··{
115	····return·"test";	99	····return·"test";
116	··}	100	··}
117		101
118	··void·start_accept()	102	··void·do_accept()
119	··{	103	··{
120	····session*·new_session·=·new·session(io_context_,·context_);	104	····acceptor_.async_accept(
121	····acceptor_.async_accept(new_session->socket(),	105	········[this](const·std::error_code&·error,·tcp::socket·socket)
122	········boost::bind(&server::handle_accept,·this,·new_session,	106	········{
123	··········asio::placeholders::error));	107	··········if·(!error)
124	··}	108	··········{
125		109	············std::make_shared<session>(
126	··void·handle_accept(session*·new_session,	110	················asio::ssl::stream<tcp::socket>(
127	······const·asio::error_code&·error)	111	··················std::move(socket),·context_))->start();
128	··{	112	··········}
129	····if·(!error)
130	····{
131	······new_session->start();
132	····}
133	····else
134	····{
135	······delete·new_session;
136	····}
137		113
138	····start_accept();	114	··········do_accept();
		115	········});
139	··}	116	··}
140		117
141	private:	118	··tcp::acceptor·acceptor_;
142	··asio::io_context&·io_context_;
143	··asio::ip::tcp::acceptor·acceptor_;
144	··asio::ssl::context·context_;	119	··asio::ssl::context·context_;
145	};	120	};
146		121
147	int·main(int·argc,·char*·argv[])	122	int·main(int·argc,·char*·argv[])
148	{	123	{
149	··try	124	··try
150	··{	125	··{
151	····if·(argc·!=·2)	126	····if·(argc·!=·2)
152	····{	127	····{
153	······std::cerr·<<·"Usage:·server·<port>\n";	128	······std::cerr·<<·"Usage:·server·<port>\n";
154	······return·1;	129	······return·1;
155	····}	130	····}
156		131
157	····asio::io_context·io_context;	132	····asio::io_context·io_context;
158		133
159	····using·namespace·std;·//·For·atoi.	134	····using·namespace·std;·//·For·atoi.
160	····server·s(io_context,·atoi(argv[1]));	135	····server·s(io_context,·atoi(argv[1]));
161		136
162	····io_context.run();	137	····io_context.run();
163	··}	138	··}
164	··catch·(std::exception&·e)	139	··catch·(std::exception&·e)
165	··{	140	··{
166	····std::cerr·<<·"Exception:·"·<<·e.what()·<<·"\n";	141	····std::cerr·<<·"Exception:·"·<<·e.what()·<<·"\n";
167	··}	142	··}
168		143
169	··return·0;	144	··return·0;
170	}	145	}