negentropy/test/protoversion.pl
2023-09-16 22:52:46 -04:00

63 lines
1.6 KiB
Perl
Executable File

#!/usr/bin/env perl
use strict;
$|++;
use IPC::Open2;
use Session::Token;
use FindBin;
use lib "$FindBin::Bin";
use Utils;
die "usage: $0 <lang>" if @ARGV < 1;
my $harnessCmd = Utils::harnessTypeToCmd(shift) || die "please provide harness type (cpp, js, etc)";
my $idSize = shift || 16;
my $expectedResp;
## Get expected response using protocol version 0
{
my ($infile, $outfile);
my $pid = open2($outfile, $infile, $harnessCmd);
print $infile "item,12345,eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee\n";
print $infile "seal\n";
print $infile "msg,6000000200\n"; ## full range bound, empty IdList
my $resp = <$outfile>;
chomp $resp;
$expectedResp = $resp;
}
## Client tries to use some hypothetical newer version, but falls back to version 0
{
my ($infile, $outfile);
my $pid = open2($outfile, $infile, $harnessCmd);
print $infile "item,12345,eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee\n";
print $infile "seal\n";
print $infile "msg,61aabbccddeeff\n"; ## some new protocol message
my $resp = <$outfile>;
chomp $resp;
## 61: The bound timestamp, as varint. The value is 0x60 (preferred protocol version), but 1 is added as per timestamp protocol
## 00: The following ID has length 0
## 04: UnsupportedProtocolVersion mode
die "bad upgrade response: $resp" unless $resp eq "msg,610004";
## Try again with protocol version 0
print $infile "msg,6000000200\n"; ## full range bound, empty IdList
$resp = <$outfile>;
chomp $resp;
die "didn't fall back to protocol version 0: $resp" unless $resp eq $expectedResp;
}
print "OK\n";