C++ (Cpp) helix_session_create Examples

Example #1

File: helix-trace.c Project: divaykin/helix

int main(int argc, char *argv[])
{
	helix_session_t session;
	struct sockaddr_in addr;
	helix_protocol_t proto;
	struct config cfg = {};
	uv_udp_t socket;
	int err;

	program = basename(argv[0]);

	parse_options(&cfg, argc, argv);

	if (!cfg.symbol) {
		fprintf(stderr, "error: symbol is not specified. Use the '-s' option to specify it.\n");
		exit(1);
	}

	if (!cfg.multicast_proto) {
		fprintf(stderr, "error: multicast protocol is not specified. Use the '-c' option to specify it.\n");
		exit(1);
	}

	if (!cfg.multicast_addr) {
		fprintf(stderr, "error: multicast address is not specified. Use the '-a' option to specify it.\n");
		exit(1);
	}

	if (!cfg.multicast_port) {
		fprintf(stderr, "error: multicast port is not specified. Use the '-p' option to specify it.\n");
		exit(1);
	}

	if (!strcmp(cfg.format, "pretty")) {
		fmt_ops = &fmt_pretty_ops;
	} else if (!strcmp(cfg.format, "csv")) {
		fmt_ops = &fmt_csv_ops;
	} else {
		fprintf(stderr, "error: %s: unsupported format\n", cfg.format);
		exit(1);
	}

	if (cfg.output) {
		output = fopen(cfg.output, "w");
		if (!output) {
			fprintf(stderr, "error: %s: %s\n", cfg.output, strerror(errno));
			exit(1);
		}
	} else {
		output = stdout;
	}

	proto = helix_protocol_lookup(cfg.multicast_proto);
	if (!proto) {
		fprintf(stderr, "error: protocol '%s' is not supported\n", cfg.multicast_proto);
		exit(1);
	}

	session = helix_session_create(proto, cfg.symbol, process_ob_event, process_trade_event, NULL);
	if (!session) {
		fprintf(stderr, "error: unable to create new session\n");
		exit(1);
	}

	err = uv_udp_init(uv_default_loop(), &socket);
	if (err) {
		libuv_error("uv_udp_init", err);
	}
	socket.data = session;

	err = uv_ip4_addr("0.0.0.0", cfg.multicast_port, &addr);
	if (err) {
		libuv_error("uv_ip4_addr", err);
	}

	err = uv_udp_bind(&socket, (const struct sockaddr *)&addr, UV_UDP_REUSEADDR);
	if (err) {
		libuv_error("uv_udp_bind", err);
	}

	err = uv_udp_set_membership(&socket, cfg.multicast_addr, NULL, UV_JOIN_GROUP);
	if (err) {
		libuv_error("uv_udp_set_membership", err);
	}

	err = uv_udp_recv_start(&socket, alloc_packet, recv_packet);
	if (err) {
		libuv_error("uv_udp_recv_start", err);
	}

	fmt_ops->fmt_header();

	uv_run(uv_default_loop(), UV_RUN_DEFAULT);
}

Example #2

File: helix-top.c Project: derekxgl/helix

int main(int argc, char *argv[])
{
	helix_session_t session;
	struct sockaddr_in addr;
	helix_protocol_t proto;
	struct config cfg = {};
	uv_udp_t socket;
	int err;

	program = basename(argv[0]);

	parse_options(&cfg, argc, argv);

	if (!cfg.symbol) {
		fprintf(stderr, "error: symbol is not specified. Use the '-s' option to specify it.\n");
		exit(1);
	}

	if (!cfg.proto) {
		fprintf(stderr, "error: multicast protocol is not specified. Use the '-P' option to specify it.\n");
		exit(1);
	}

	if (!cfg.multicast_addr) {
		fprintf(stderr, "error: multicast address is not specified. Use the '-a' option to specify it.\n");
		exit(1);
	}

	if (!cfg.multicast_port) {
		fprintf(stderr, "error: multicast port is not specified. Use the '-p' option to specify it.\n");
		exit(1);
	}

	proto = helix_protocol_lookup(cfg.proto);
	if (!proto) {
		fprintf(stderr, "error: protocol '%s' is not supported\n", cfg.proto);
		exit(1);
	}

	session = helix_session_create(proto, process_ob_event, process_trade_event, NULL);
	if (!session) {
		fprintf(stderr, "error: unable to create new session\n");
		exit(1);
	}

	helix_session_subscribe(session, cfg.symbol, cfg.max_orders);

	err = uv_udp_init(uv_default_loop(), &socket);
	if (err) {
		libuv_error("uv_udp_init", err);
	}
	socket.data = session;

	err = uv_ip4_addr("0.0.0.0", cfg.multicast_port, &addr);
	if (err) {
		libuv_error("uv_ip4_addr", err);
	}

	err = uv_udp_bind(&socket, (const struct sockaddr *)&addr, UV_UDP_REUSEADDR);
	if (err) {
		libuv_error("uv_udp_bind", err);
	}

	err = uv_udp_set_membership(&socket, cfg.multicast_addr, NULL, UV_JOIN_GROUP);
	if (err) {
		libuv_error("uv_udp_set_membership", err);
	}

	err = uv_udp_recv_start(&socket, alloc_packet, recv_packet);
	if (err) {
		libuv_error("uv_udp_recv_start", err);
	}

	initscr();

	clear();

	refresh();

	uv_run(uv_default_loop(), UV_RUN_DEFAULT);

	endwin();

	return 0;
}