# HG changeset patch
# User Maxim Dounin <mdounin@mdounin.ru>
# Date 1650492938 -10800
# Thu Apr 21 01:15:38 2022 +0300
# Node ID c5a73a2d1e3702a194ac7e7d8494acbeaf7cefe7
# Parent 97a72607140290452a991ce98f3eb1d004b6eabc
Tests: tests for duplicate response headers.

diff --git a/proxy_duplicate_headers.t b/proxy_duplicate_headers.t
new file mode 100644
--- /dev/null
+++ b/proxy_duplicate_headers.t
@@ -0,0 +1,175 @@
+#!/usr/bin/perl
+
+# (C) Maxim Dounin
+
+# Test for http backend returning response with invalid and duplicate
+# headers.
+
+###############################################################################
+
+use warnings;
+use strict;
+
+use Test::More;
+use Socket qw/ CRLF /;
+
+BEGIN { use FindBin; chdir($FindBin::Bin); }
+
+use lib 'lib';
+use Test::Nginx;
+
+###############################################################################
+
+select STDERR; $| = 1;
+select STDOUT; $| = 1;
+
+my $t = Test::Nginx->new()->has(qw/http proxy/)->plan(8);
+
+$t->write_file_expand('nginx.conf', <<'EOF');
+
+%%TEST_GLOBALS%%
+
+daemon off;
+
+events {
+}
+
+http {
+ %%TEST_GLOBALS_HTTP%%
+
+ server {
+ listen 127.0.0.1:8080;
+ server_name localhost;
+
+ location / {
+ proxy_pass http://127.0.0.1:8081;
+ proxy_read_timeout 1s;
+ }
+ }
+}
+
+EOF
+
+$t->run_daemon(\&http_daemon);
+$t->run()->waitforsocket('127.0.0.1:' . port(8081));
+
+###############################################################################
+
+like(http_get('/'), qr/200 OK/, 'normal');
+
+TODO: {
+local $TODO = 'not yet';
+
+like(http_get('/invalid-length'), qr/502 Bad/, 'invalid length');
+like(http_get('/duplicate-length'), qr/502 Bad/, 'duplicate length');
+like(http_get('/unknown-transfer-encoding'), qr/502 Bad/,
+ 'unknown transfer encoding');
+like(http_get('/duplicate-transfer-encoding'), qr/502 Bad/,
+ 'duplicate transfer encoding');
+like(http_get('/length-and-transfer-encoding'), qr/502 Bad/,
+ 'length and transfer encoding');
+like(http_get('/transfer-encoding-and-length'), qr/502 Bad/,
+ 'transfer encoding and length');
+
+like(http_get('/duplicate-expires'), qr/Expires: foo(?!.*bar)/s,
+ 'duplicate expires ignored');
+
+}
+
+###############################################################################
+
+sub http_daemon {
+ my $server = IO::Socket::INET->new(
+ Proto => 'tcp',
+ LocalAddr => '127.0.0.1:' . port(8081),
+ Listen => 5,
+ Reuse => 1
+ )
+ or die "Can't create listening socket: $!\n";
+
+ local $SIG{PIPE} = 'IGNORE';
+
+ while (my $client = $server->accept()) {
+ $client->autoflush(1);
+
+ my $headers = '';
+ my $uri = '';
+
+ while (<$client>) {
+ $headers .= $_;
+ last if (/^\x0d?\x0a?$/);
+ }
+
+ $uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;
+
+ if ($uri eq '/') {
+
+ print $client
+ 'HTTP/1.1 200 OK' . CRLF .
+ 'Connection: close' . CRLF .
+ 'Content-Length: 0' . CRLF . CRLF;
+
+ } elsif ($uri eq '/invalid-length') {
+
+ print $client
+ 'HTTP/1.1 200 OK' . CRLF .
+ 'Connection: close' . CRLF .
+ 'Content-Length: foo' . CRLF . CRLF;
+
+ } elsif ($uri eq '/duplicate-length') {
+
+ print $client
+ 'HTTP/1.1 200 OK' . CRLF .
+ 'Connection: close' . CRLF .
+ 'Content-Length: 0' . CRLF .
+ 'Content-Length: 0' . CRLF . CRLF;
+
+ } elsif ($uri eq '/unknown-transfer-encoding') {
+
+ print $client
+ 'HTTP/1.1 200 OK' . CRLF .
+ 'Connection: close' . CRLF .
+ 'Transfer-Encoding: foo' . CRLF . CRLF;
+
+ } elsif ($uri eq '/duplicate-transfer-encoding') {
+
+ print $client
+ 'HTTP/1.1 200 OK' . CRLF .
+ 'Connection: close' . CRLF .
+ 'Transfer-Encoding: chunked' . CRLF .
+ 'Transfer-Encoding: chunked' . CRLF . CRLF .
+ '0' . CRLF . CRLF;
+
+ } elsif ($uri eq '/length-and-transfer-encoding') {
+
+ print $client
+ 'HTTP/1.1 200 OK' . CRLF .
+ 'Connection: close' . CRLF .
+ 'Content-Length: 0' . CRLF .
+ 'Transfer-Encoding: chunked' . CRLF . CRLF .
+ '0' . CRLF . CRLF;
+
+ } elsif ($uri eq '/transfer-encoding-and-length') {
+
+ print $client
+ 'HTTP/1.1 200 OK' . CRLF .
+ 'Connection: close' . CRLF .
+ 'Transfer-Encoding: chunked' . CRLF .
+ 'Content-Length: 0' . CRLF . CRLF .
+ '0' . CRLF . CRLF;
+
+ } elsif ($uri eq '/duplicate-expires') {
+
+ print $client
+ 'HTTP/1.1 200 OK' . CRLF .
+ 'Connection: close' . CRLF .
+ 'Expires: foo' . CRLF .
+ 'Expires: bar' . CRLF . CRLF;
+
+ }
+
+ close $client;
+ }
+}
+
+###############################################################################

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