h2-spdy-stats.stp
No One
Actions

Authored By

	• ema
	Mar 8 2016, 8:55 AM

Size

1 KB

Referenced Files

None

Subscribers

None

h2-spdy-stats.stp
View Options

	// To target systems running 4.4.0-1-amd64, compile as follows:
	// stap -v -r 4.4.0-1-amd64 -m h2_spdy_stats h2-spdy-stats.stp -p 4
	//
	// These packages need to be installed on the production system:
	// systemtap-runtime libssl1.0.0-dbg
	//
	// Run with:
	// staprun -v h2_spdy_stats.ko

	global bin

	// ALPN
	probe process("/usr/lib/x86_64-linux-gnu/libssl.so.1.0.0").function("SSL_select_next_proto") {
	value = text_str(user_string($client))

	if (value =~ "h2") {
	if (value =~ "spdy") {
	bin["both"]++
	} else {
	bin["h2"]++
	}
	}
	}

	// NPN
	probe process("/usr/lib/x86_64-linux-gnu/libssl.so.1.0.0").function("SSL_get0_next_proto_negotiated") {
	if ($s->s3->next_proto_neg_seen && $s->next_proto_negotiated_len > 0) {
	value = text_str(user_string_n($s->next_proto_negotiated, $s->next_proto_negotiated_len))
	if (value =~ "http/1.1") {
	bin["npn_http1"]++
	}
	if (value =~ "spdy") {
	bin["spdy"]++
	}
	}
	}

	probe process("/usr/lib/x86_64-linux-gnu/libssl.so.1.0.0").function("SSL_accept") {
	bin["total"]++
	}

	probe end {
	foreach (key in bin) {
	printf("%s: %d \n", key, bin[key])
	}
	}