X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fio%2Ftest%2Frun-47-exclusive-duplex.c;fp=ccan%2Fio%2Ftest%2Frun-47-exclusive-duplex.c;h=60e6de4101cfdc0661f97be69fc61919f0338394;hp=0000000000000000000000000000000000000000;hb=580457bd3e4af60d5367412589d2aa1bb0289eed;hpb=0fa318d0eeccbb4d33310f048653fa212c12d86d

diff --git a/ccan/io/test/run-47-exclusive-duplex.c b/ccan/io/test/run-47-exclusive-duplex.c
new file mode 100644
index 00000000..60e6de41
--- /dev/null
+++ b/ccan/io/test/run-47-exclusive-duplex.c
@@ -0,0 +1,144 @@
+#include <ccan/io/io.h>
+/* Include the C files directly. */
+#include <ccan/io/poll.c>
+#include <ccan/io/io.c>
+#include <ccan/tap/tap.h>
+#include <sys/wait.h>
+#include <stdio.h>
+
+#define PORT "65047"
+
+struct data {
+	struct io_listener *l;
+	char *pattern;
+	char buf[30];
+	size_t buflen;
+};
+
+static struct io_plan *read_more(struct io_conn *conn, struct data *d);
+static struct io_plan *write_more(struct io_conn *conn, struct data *d);
+
+static struct io_plan *read_done(struct io_conn *conn, struct data *d)
+{
+	tal_resize(&d->pattern, tal_count(d->pattern) + 1 + strlen(d->buf));
+	strcat(d->pattern, "<");
+	strcat(d->pattern, d->buf);
+	return read_more(conn, d);
+}
+
+static struct io_plan *read_more(struct io_conn *conn, struct data *d)
+{
+	memset(d->buf, 0, sizeof(d->buf));
+	return io_read_partial(conn, d->buf, sizeof(d->buf), &d->buflen,
+			       read_done, d);
+}
+
+static struct io_plan *write_done(struct io_conn *conn, struct data *d)
+{
+	tal_resize(&d->pattern, tal_count(d->pattern) + 1);
+	strcat(d->pattern, ">");
+	return write_more(conn, d);
+}
+
+static struct io_plan *write_more(struct io_conn *conn, struct data *d)
+{
+	return io_write_partial(conn, d->buf, 1, &d->buflen,
+				write_done, d);
+}
+
+static struct io_plan *read_priority_init(struct io_conn *conn, struct data *d)
+{
+	/* This should suppress the write */
+	ok1(io_conn_exclusive(conn, true));
+	return read_more(conn, d);
+}
+
+static struct io_plan *init_conn(struct io_conn *conn, struct data *d)
+{
+	/* Free listener so when conns close we exit io_loop */
+	io_close_listener(d->l);
+
+	return io_duplex(conn, read_priority_init(conn, d), write_more(conn, d));
+}
+
+
+static int make_listen_fd(const char *port, struct addrinfo **info)
+{
+	int fd, on = 1;
+	struct addrinfo *addrinfo, hints;
+
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_UNSPEC;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = AI_PASSIVE;
+	hints.ai_protocol = 0;
+
+	if (getaddrinfo(NULL, port, &hints, &addrinfo) != 0)
+		return -1;
+
+	fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+		    addrinfo->ai_protocol);
+	if (fd < 0)
+		return -1;
+
+	setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+	if (bind(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0) {
+		close(fd);
+		return -1;
+	}
+	if (listen(fd, 1) != 0) {
+		close(fd);
+		return -1;
+	}
+	*info = addrinfo;
+	return fd;
+}
+
+int main(void)
+{
+	struct addrinfo *addrinfo = NULL;
+	int fd, status;
+	struct data d;
+
+	/* This is how many tests you plan to run */
+	plan_tests(8);
+	fd = make_listen_fd(PORT, &addrinfo);
+	ok1(fd >= 0);
+	d.l = io_new_listener(NULL, fd, init_conn, &d);
+	ok1(d.l);
+	fflush(stdout);
+
+	if (!fork()) {
+		io_close_listener(d.l);
+		fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+			    addrinfo->ai_protocol);
+		if (fd < 0)
+			exit(1);
+		if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
+			exit(2);
+		signal(SIGPIPE, SIG_IGN);
+
+		if (write(fd, "1hellothere", strlen("1hellothere")) != strlen("1hellothere"))
+			exit(3);
+		sleep(1);
+		if (write(fd, "1helloagain", strlen("1helloagain")) != strlen("1helloagain"))
+			exit(4);
+		close(fd);
+		freeaddrinfo(addrinfo);
+		exit(0);
+	}
+	freeaddrinfo(addrinfo);
+
+	d.pattern = tal_arrz(NULL, char, 1);
+	ok1(io_loop(NULL, NULL) == NULL);
+	/* No trace of writes */
+	ok1(strcmp(d.pattern, "<1hellothere<1helloagain") == 0);
+	tal_free(d.pattern);
+
+	ok1(wait(&status));
+	ok1(WIFEXITED(status));
+	ok1(WEXITSTATUS(status) == 0);
+
+	/* This exits depending on whether all tests passed */
+	return exit_status();
+}