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-rw-r--r--src/core/socket.c31
1 files changed, 26 insertions, 5 deletions
diff --git a/src/core/socket.c b/src/core/socket.c
index d3d4866fe6..016df40b8c 100644
--- a/src/core/socket.c
+++ b/src/core/socket.c
@@ -100,7 +100,8 @@ static void socket_init(Unit *u) {
s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
- RATELIMIT_INIT(s->trigger_limit, 5*USEC_PER_SEC, 2500);
+ s->trigger_limit.interval = USEC_INFINITY;
+ s->trigger_limit.burst = (unsigned) -1;
}
static void socket_unwatch_control_pid(Socket *s) {
@@ -328,6 +329,25 @@ static int socket_add_extras(Socket *s) {
assert(s);
+ /* Pick defaults for the trigger limit, if nothing was explicitly configured. We pick a relatively high limit
+ * in Accept=yes mode, and a lower limit for Accept=no. Reason: in Accept=yes mode we are invoking accept()
+ * ourselves before the trigger limit can hit, thus incoming connections are taken off the socket queue quickly
+ * and reliably. This is different for Accept=no, where the spawned service has to take the incoming traffic
+ * off the queues, which it might not necessarily do. Moreover, while Accept=no services are supposed to
+ * process whatever is queued in one go, and thus should normally never have to be started frequently. This is
+ * different for Accept=yes where each connection is processed by a new service instance, and thus frequent
+ * service starts are typical. */
+
+ if (s->trigger_limit.interval == USEC_INFINITY)
+ s->trigger_limit.interval = 2 * USEC_PER_SEC;
+
+ if (s->trigger_limit.burst == (unsigned) -1) {
+ if (s->accept)
+ s->trigger_limit.burst = 200;
+ else
+ s->trigger_limit.burst = 20;
+ }
+
if (have_non_accept_socket(s)) {
if (!UNIT_DEREF(s->service)) {
@@ -620,8 +640,8 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) {
if (!isempty(s->user) || !isempty(s->group))
fprintf(f,
- "%sOwnerUser: %s\n"
- "%sOwnerGroup: %s\n",
+ "%sSocketUser: %s\n"
+ "%sSocketGroup: %s\n",
prefix, strna(s->user),
prefix, strna(s->group));
@@ -1271,11 +1291,13 @@ static int socket_open_fds(Socket *s) {
/* Apply the socket protocol */
switch(p->address.type) {
+
case SOCK_STREAM:
case SOCK_SEQPACKET:
if (p->socket->socket_protocol == IPPROTO_SCTP)
p->address.protocol = p->socket->socket_protocol;
break;
+
case SOCK_DGRAM:
if (p->socket->socket_protocol == IPPROTO_UDPLITE)
p->address.protocol = p->socket->socket_protocol;
@@ -1339,8 +1361,7 @@ static int socket_open_fds(Socket *s) {
}
break;
- case SOCKET_USB_FUNCTION:
- {
+ case SOCKET_USB_FUNCTION: {
_cleanup_free_ char *ep = NULL;
ep = path_make_absolute("ep0", p->path);