#include <stdlib.h>
#include <assert.h>
#include <poll.h>
+#include <unistd.h>
+#include <fcntl.h>
void *io_loop_return;
return plan;
}
+static int already_connected(int fd, struct io_plan *plan)
+{
+ return io_debug_io(1);
+}
+
+static int do_connect(int fd, struct io_plan *plan)
+{
+ int err, ret;
+ socklen_t len = sizeof(err);
+
+ /* Has async connect finished? */
+ ret = getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &len);
+ if (ret < 0)
+ return -1;
+
+ if (err == 0) {
+ /* Restore blocking if it was initially. */
+ fcntl(fd, F_SETFD, plan->u.len_len.len1);
+ return 1;
+ }
+ return 0;
+}
+
+struct io_plan io_connect_(int fd, const struct addrinfo *addr,
+ struct io_plan (*cb)(struct io_conn*, void *),
+ void *arg)
+{
+ struct io_plan plan;
+
+ assert(cb);
+
+ plan.next = cb;
+ plan.next_arg = arg;
+
+ /* Save old flags, set nonblock if not already. */
+ plan.u.len_len.len1 = fcntl(fd, F_GETFD);
+ fcntl(fd, F_SETFD, plan.u.len_len.len1 | O_NONBLOCK);
+
+ /* Immediate connect can happen. */
+ if (connect(fd, addr->ai_addr, addr->ai_addrlen) == 0) {
+ /* Dummy will be called immediately. */
+ plan.pollflag = POLLOUT;
+ plan.io = already_connected;
+ } else {
+ if (errno != EINPROGRESS)
+ return io_close_();
+
+ plan.pollflag = POLLIN;
+ plan.io = do_connect;
+ }
+ return plan;
+}
+
struct io_plan io_idle_(void)
{
struct io_plan plan;
struct io_plan (*cb)(struct io_conn *, void*),
void *arg);
+/**
+ * io_connect - plan to connect to a listening socket.
+ * @fd: file descriptor.
+ * @addr: where to connect.
+ * @cb: function to call once it's done.
+ * @arg: @cb argument
+ *
+ * This initiates a connection, and creates a plan for
+ * (asynchronously). completing it. Once complete, @len is updated
+ * and the @cb function will be called: on an error, the finish
+ * function is called instead.
+ *
+ * Note that the connect may actually be done immediately.
+ */
+struct addrinfo;
+#define io_connect(fd, addr, cb, arg) \
+ io_debug(io_connect_((fd), (addr), \
+ typesafe_cb_preargs(struct io_plan, void *, \
+ (cb), (arg), \
+ struct io_conn *), \
+ (arg)))
+struct io_plan io_connect_(int fd, const struct addrinfo *addr,
+ struct io_plan (*cb)(struct io_conn *, void*),
+ void *arg);
+
/**
* io_idle - plan to do nothing.
*
--- /dev/null
+#define DEBUG
+#define PORT "64009"
+#define main real_main
+int real_main(void);
+#include "run-09-connect.c"
+#undef main
+static bool always_debug(struct io_conn *conn) { return true; }
+int main(void) { io_debug_conn = always_debug; return real_main(); }
--- /dev/null
+#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>
+
+#ifndef PORT
+#define PORT "65009"
+#endif
+
+static struct io_listener *l;
+
+struct data {
+ int state;
+ char buf[10];
+};
+
+static struct io_plan closer(struct io_conn *conn, struct data *d)
+{
+ d->state++;
+ return io_close();
+}
+
+static struct io_plan connected(struct io_conn *conn, struct data *d2)
+{
+ ok1(d2->state == 0);
+ d2->state++;
+ return io_read(d2->buf, sizeof(d2->buf), closer, d2);
+}
+
+static void init_conn(int fd, struct data *d)
+{
+ ok1(d->state == 0);
+ d->state++;
+ io_new_conn(fd, io_write(d->buf, sizeof(d->buf), closer, d));
+ io_close_listener(l);
+}
+
+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 data *d = malloc(sizeof(*d)), *d2 = malloc(sizeof(*d2));
+ struct addrinfo *addrinfo;
+ int fd;
+
+ /* This is how many tests you plan to run */
+ plan_tests(8);
+ d->state = 0;
+ memset(d->buf, 'a', sizeof(d->buf));
+ fd = make_listen_fd(PORT, &addrinfo);
+ ok1(fd >= 0);
+ l = io_new_listener(fd, init_conn, d);
+ ok1(l);
+
+ fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+ addrinfo->ai_protocol);
+ d2->state = 0;
+ ok1(io_new_conn(fd, io_connect(fd, addrinfo, connected, d2)));
+
+ ok1(io_loop() == NULL);
+ ok1(d->state == 2);
+ ok1(d2->state == 2);
+
+ freeaddrinfo(addrinfo);
+ free(d);
+ free(d2);
+
+ /* This exits depending on whether all tests passed */
+ return exit_status();
+}