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Compute dt for each path

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This commit is contained in:
angt
2016-01-31 16:33:17 +01:00
parent a9cd3da592
commit 9f5ae041c3
1 changed files with 18 additions and 2 deletions
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20
mud.c
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@@ -16,6 +16,10 @@ struct path {
socklen_t addrlen; socklen_t addrlen;
unsigned count; unsigned count;
uint32_t rtt; uint32_t rtt;
uint32_t dt;
uint32_t send_dt;
uint32_t recv_time;
uint32_t send_time;
struct path *next; struct path *next;
}; };
@@ -302,16 +306,20 @@ ssize_t mud_recv (struct mud *mud, void *data, size_t size)
if (!send_now) { if (!send_now) {
send_now = mud_read32(&buf[4]); send_now = mud_read32(&buf[4]);
path->dt = mud_read32(&buf[8]);
path->rtt = now-send_now; path->rtt = now-send_now;
errno = EAGAIN; errno = EAGAIN;
return -1; return -1;
} }
if (path->count==500) { if (path->count==256) {
unsigned char reply[3*4];
uint32_t dt = (now-path->recv_time)>>8;
path->count = 0; path->count = 0;
unsigned char reply[8]; path->recv_time = now;
memset(reply, 0, 4); memset(reply, 0, 4);
memcpy(&reply[4], buf, 4); memcpy(&reply[4], buf, 4);
mud_write32(&reply[8], dt);
mud_send_path(path, reply, sizeof(reply)); mud_send_path(path, reply, sizeof(reply));
} else { } else {
path->count++; path->count++;
@@ -354,5 +362,13 @@ ssize_t mud_send (struct mud *mud, const void *data, size_t size)
if (ret!=size+4) if (ret!=size+4)
return 0; return 0;
if (path->count==256) {
path->count = 0;
path->send_dt = (now-path->send_time)>>8;
path->send_time = now;
} else {
path->count++;
}
return size; return size;
} }