#include "net.h"
#include "fd.h"
#include "sched.h"
-
+#include "close_on_fork.h"
+#include "chunk_queue.h"
/** Convert in_addr to ascii. */
#define TARGET_ADDR(oc) inet_ntoa((oc)->addr)
int port;
/** The socket fd. */
int fd;
+ /** The list of queued chunks for this fd. */
+ struct chunk_queue *cq;
};
static struct list_head targets;
static int sender_status;
+static void udp_close_target(struct udp_target *ut)
+{
+ if (ut->fd < 0)
+ return;
+ close(ut->fd);
+ del_close_on_fork_list(ut->fd);
+ cq_destroy(ut->cq);
+ ut->cq = NULL;
+ ut->fd = -1;
+}
+
static void udp_delete_target(struct udp_target *ut, const char *msg)
{
PARA_NOTICE_LOG("deleting %s:%d (%s) from list\n", TARGET_ADDR(ut),
ut->port, msg);
- if (ut->fd >= 0)
- close(ut->fd);
+ udp_close_target(ut);
list_del(&ut->node);
free(ut);
}
int ret;
list_for_each_entry_safe(ut, tmp, &targets, node) {
- size_t written = len;
if (ut->fd < 0)
continue;
- ret = write_all(ut->fd, buf, &written);
- if (ret < 0) /* TODO: Use chunk queueing */
- return udp_delete_target(ut, "send error");
- if (written != len)
- PARA_WARNING_LOG("short write %zu/%zu\n", written, len);
+ ret = send_queued_chunks(ut->fd, ut->cq, 0);
+ if (ret < 0) {
+ udp_delete_target(ut, para_strerror(-ret));
+ continue;
+ }
+ if (!len)
+ continue;
+ if (!ret) { /* still data left in the queue */
+ ret = cq_enqueue(ut->cq, buf, len);
+ if (ret < 0) {
+ udp_delete_target(ut, para_strerror(-ret));
+ continue;
+ }
+ }
+ ret = write_nonblock(ut->fd, buf, len, 0);
+ if (ret < 0) {
+ udp_delete_target(ut, para_strerror(-ret));
+ continue;
+ }
+ if (ret != len) {
+ ret = cq_enqueue(ut->cq, buf + ret, len - ret);
+ if (ret < 0) {
+ udp_delete_target(ut, para_strerror(-ret));
+ continue;
+ }
+ }
}
}
+#define UDP_CQ_BYTES 40000
+
static int udp_init_session(struct udp_target *ut)
{
int ret;
if (ut->fd >= 0) /* nothing to do */
return 0;
PARA_NOTICE_LOG("sending to udp %s:%d\n", TARGET_ADDR(ut), ut->port);
- /* TODO: Make ttl configurable. */
- ret = create_udp_send_socket(TARGET_ADDR(ut), ut->port, 10);
+ ret = create_udp_send_socket(TARGET_ADDR(ut), ut->port,
+ conf.udp_ttl_arg);
if (ret < 0)
return ret;
ut->fd = ret;
- return mark_fd_nonblocking(ut->fd);
+ ret = mark_fd_nonblocking(ut->fd);
+ if (ret < 0) {
+ close(ut->fd);
+ return ret;
+ }
+ add_close_on_fork_list(ut->fd);
+ ut->cq = cq_new(UDP_CQ_BYTES);
+ return 1;
}
static void udp_shutdown_targets(void)
if (ut->fd < 0)
continue;
write(ut->fd, buf, UDP_AUDIO_HEADER_LEN);
- close(ut->fd);
- ut->fd = -1;
+ udp_close_target(ut);
}
}