mirror of https://github.com/mongodb/mongo
62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
// Attempt to verify that connections can make use of TCP_FASTOPEN
|
|
// @tags: [multiversion_incompatible, does_not_support_stepdowns]
|
|
|
|
(function() {
|
|
'use strict';
|
|
|
|
load("jstests/libs/netstat.js");
|
|
|
|
// Does it make sense to expect TFO support?
|
|
try {
|
|
// Both client and server bits must be set to run this test.
|
|
const val = cat("/proc/sys/net/ipv4/tcp_fastopen");
|
|
if ((Number.parseInt(val) & 3) != 3) {
|
|
print("==Skipping test, tcp_fastopen not enabled: " + val);
|
|
return;
|
|
}
|
|
} catch (e) {
|
|
// File not found or unreadable, assume no TFO support.
|
|
print("==Skipping test, unable to read /proc/sys/net/ipv4/tcp_fastopen");
|
|
return;
|
|
}
|
|
|
|
const initial = db.serverStatus().network.tcpFastOpen;
|
|
printjson(initial);
|
|
print("/proc/net/netstat:");
|
|
const initialObj = getNetStatObj();
|
|
printjson(initialObj);
|
|
|
|
// If TCPFastOpenBlackhole is 0 or not present, try to run the test. Otherwise,
|
|
// we've seen an event, and should skip the test.
|
|
if (initialObj.TcpExt.TCPFastOpenBlackhole) {
|
|
print("==Skipping test, host OS has observed a TCPFastOpenBlackhole event");
|
|
return;
|
|
}
|
|
|
|
if (!initial.serverSupported || !initial.clientSupported) {
|
|
print("==Skipping test, one or both setsockopt() calls failed");
|
|
return;
|
|
}
|
|
|
|
function tryShell() {
|
|
const conn = runMongoProgram('mongo', '--port', myPort(), '--eval', ';');
|
|
print("/proc/net/netstat:");
|
|
print(cat("/proc/net/netstat"));
|
|
assert.eq(0, conn);
|
|
}
|
|
|
|
// Initial connect to be sure a TFO cookie is requested and received.
|
|
tryShell();
|
|
|
|
const first = db.serverStatus().network.tcpFastOpen;
|
|
printjson(first);
|
|
|
|
// Second connect using the TFO cookie.
|
|
tryShell();
|
|
|
|
const second = db.serverStatus().network.tcpFastOpen;
|
|
printjson(second);
|
|
|
|
assert.gt(second.accepted, first.accepted, "Second connection did not trigger TFO");
|
|
})();
|