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libobs: Use exponential backoff for reconnecting

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Implements exponential backoff for consecutive reconnects, which is
useful to prevent too many connections from trying to reconnect back to
a service at once over a short period of time in the case of potential
service downtime.  Exponential backoff causes each subsequent reconnect
attempt to double its timeout duration.
This commit is contained in:
jp9000 2015-05-10 16:07:22 -07:00
parent 691d3b4a73
commit c1e8d28548
2 changed files with 10 additions and 3 deletions
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1
libobs/obs-internal.h
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@ -466,6 +466,7 @@ struct obs_output {
int reconnect_retry_sec;
int reconnect_retry_max;
int reconnect_retries;
int reconnect_retry_cur_sec;
bool reconnecting;
pthread_t reconnect_thread;
os_event_t *reconnect_stop_event;

12
libobs/obs-output.c
View File

@ -1028,7 +1028,7 @@ static inline void signal_reconnect(struct obs_output *output)
{
struct calldata params = {0};
calldata_set_int(&params, "timeout_sec",
output->reconnect_retry_sec);
output->reconnect_retry_cur_sec);
calldata_set_ptr(&params, "output", output);
signal_handler_signal(output->context.signals, "reconnect", &params);
calldata_free(&params);
@ -1220,7 +1220,7 @@ void obs_output_end_data_capture(obs_output_t *output)
static void *reconnect_thread(void *param)
{
struct obs_output *output = param;
unsigned long ms = output->reconnect_retry_sec * 1000;
unsigned long ms = output->reconnect_retry_cur_sec * 1000;
output->reconnect_thread_active = true;
@ -1238,8 +1238,10 @@ static void output_reconnect(struct obs_output *output)
{
int ret;
if (!output->reconnecting)
if (!output->reconnecting) {
output->reconnect_retry_cur_sec = output->reconnect_retry_sec;
output->reconnect_retries = 0;
}
if (output->reconnect_retries >= output->reconnect_retry_max) {
output->reconnecting = false;
@ -1252,6 +1254,10 @@ static void output_reconnect(struct obs_output *output)
os_event_reset(output->reconnect_stop_event);
}
if (output->reconnect_retries) {
output->reconnect_retry_cur_sec *= 2;
}
output->reconnect_retries++;
ret = pthread_create(&output->reconnect_thread, NULL,