relpipe/relpipe-out-socket.cpp: src/Socket.cpp@8d036e5e5fcc (annotated)

0 924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	1	/**
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	2	* Relational pipes
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	3	* Copyright © 2022 František Kučera (Frantovo.cz, GlobalCode.info)
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	4	*
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	5	* This program is free software: you can redistribute it and/or modify
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	6	* it under the terms of the GNU General Public License as published by
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	7	* the Free Software Foundation, version 3 of the License.
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	8	*
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	9	* This program is distributed in the hope that it will be useful,
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	12	* GNU General Public License for more details.
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	13	*
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	14	* You should have received a copy of the GNU General Public License
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	15	* along with this program. If not, see <http://www.gnu.org/licenses/>.
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	16	*/
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	17	#include <string>
1 e3265afd1111 first version: TCP-only + fixed parameters František Kučera <franta-hg@frantovo.cz> parents: 0 diff changeset	18	#include <cstring>
e3265afd1111 first version: TCP-only + fixed parameters František Kučera <franta-hg@frantovo.cz> parents: 0 diff changeset	19	#include <unistd.h>
0 924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	20	#include <stdexcept>
1 e3265afd1111 first version: TCP-only + fixed parameters František Kučera <franta-hg@frantovo.cz> parents: 0 diff changeset	21	#include <arpa/inet.h>
e3265afd1111 first version: TCP-only + fixed parameters František Kučera <franta-hg@frantovo.cz> parents: 0 diff changeset	22	#include <sys/types.h>
e3265afd1111 first version: TCP-only + fixed parameters František Kučera <franta-hg@frantovo.cz> parents: 0 diff changeset	23	#include <sys/socket.h>
e3265afd1111 first version: TCP-only + fixed parameters František Kučera <franta-hg@frantovo.cz> parents: 0 diff changeset	24	#include <netinet/in.h>
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	25	#include <vector>
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	26	#include <memory>
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	27	#include <regex>
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	28
fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	29	#include "Socket.h"
0 924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	30
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	31	namespace relpipe {
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	32	namespace out {
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	33	namespace socket {
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	34
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	35	static const char PROTOCOL_TCP[] = "tcp://";
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	36	static const char PROTOCOL_UDP[] = "udp://";
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	37	static const char PROTOCOL_UDS[] = "uds://";
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	38	static const char PROTOCOL_SCTP[] = "sctp://";
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	39	static const char PROTOCOL_TCP_LISTEN[] = "tcp-listen://";
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	40	static const char PROTOCOL_UDP_LISTEN[] = "udp-listen://";
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	41	static const char PROTOCOL_UDS_LISTEN[] = "uds-listen://";
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	42	static const char PROTOCOL_SCTP_LISTEN[] = "sctp-listen://";
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	43
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	44	class FD {
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	45	private:
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	46	int fd;
0 924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	47	public:
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	48
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	49	FD(int fd) : fd(fd) {
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	50	};
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	51
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	52	virtual ~FD() {
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	53	close(fd);
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	54	}
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	55
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	56	int getFD() {
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	57	return fd;
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	58	}
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	59	};
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	60
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	61	/**
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	62	* @param connectionString
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	63	* @return protocol, hostname or path, port (optional)
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	64	*/
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	65	static std::tuple<std::string, std::string, uint16_t> parseConnectionString(const std::string& connectionString) {
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	66	// TODO: support „:“ in domain socket paths?
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	67	std::regex pattern("([^:]+)://([^:]+)(:([0-9]+))?");
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	68
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	69	}
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	70
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	71	class UDPSocket : public Socket {
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	72	private:
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	73	struct sockaddr_in remoteAddress;
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	74	public:
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	75
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	76	static std::shared_ptr<Socket> open(const std::string& connectionString) {
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	77	std::shared_ptr<UDPSocket> s = std::make_shared<UDPSocket>();
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	78	memset((char *) &s->remoteAddress, 0, sizeof (s->remoteAddress));
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	79	s->remoteAddress.sin_family = AF_INET;
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	80	s->remoteAddress.sin_addr.s_addr = inet_addr("127.0.0.1"); // TODO: use getaddrinfo() instead (because of error -1 = 255.255.255.255)
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	81	s->remoteAddress.sin_port = htons(1234);
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	82	return s;
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	83	}
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	84
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	85	void send(const std::string& message) override {
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	86	FD s(::socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP));
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	87	sendto(s.getFD(), message.c_str(), message.size(), 0, (sockaddr*) & remoteAddress, sizeof (remoteAddress));
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	88	}
0 924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	89
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	90	const std::string receive() override {
fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	91	// TODO: TCP receive()
fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	92	return "TODO: receive() a message";
0 924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	93	}
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	94
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	95	};
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	96
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	97	template<const char* protocol, typename SocketClass>
e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	98	class TemplateSocketFactory : public SocketFactory {
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	99	public:
fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	100
fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	101	bool canHandle(const std::string& connectionString) override {
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	102	return connectionString.rfind(protocol, 0) == 0;
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	103	}
fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	104
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	105	std::shared_ptr<Socket> open(const std::string& connectionString) override {
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	106	// TODO: pass string to constructor
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	107	// TODO: return shared_ptr?
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	108	return SocketClass::open(connectionString);
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	109	}
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	110	};
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	111
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	112	static std::vector<std::shared_ptr<SocketFactory>> factories
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	113	{
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	114	// FIXME: different classes than TCPSocket
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	115	std::make_shared<TemplateSocketFactory<PROTOCOL_TCP, UDPSocket >> (),
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	116	std::make_shared<TemplateSocketFactory<PROTOCOL_UDP, UDPSocket >> (),
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	117	std::make_shared<TemplateSocketFactory<PROTOCOL_UDS, UDPSocket >> (),
8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	118	std::make_shared<TemplateSocketFactory<PROTOCOL_SCTP, UDPSocket >> (),
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	119	};
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	120
3 e701e06ff561 add some factories: generic/template version František Kučera <franta-hg@frantovo.cz> parents: 2 diff changeset	121	std::shared_ptr<SocketFactory> SocketFactory::find(const std::string& connectionString) {
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	122	for (auto f : factories) if (f->canHandle(connectionString)) return f;
4 8d036e5e5fcc configuration: --connection-string --connection-option (role, mode) František Kučera <franta-hg@frantovo.cz> parents: 3 diff changeset	123	throw std::logic_error("Unable to find a SocketFactory for connection string: " + connectionString);
2 fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	124	}
fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	125
fb399fd4f053 add some factories František Kučera <franta-hg@frantovo.cz> parents: 1 diff changeset	126
0 924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	127	}
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	128	}
924e354948df establish project František Kučera <franta-hg@frantovo.cz> parents: diff changeset	129	}

author	František Kučera <franta-hg@frantovo.cz>
	Fri, 29 Jul 2022 18:03:49 +0200
branch	v_0
changeset 4	8d036e5e5fcc
parent 3	e701e06ff561
child 5	e57e2a2798b2
permissions	-rw-r--r--