diff --git a/test/known_failures_Linux.json b/test/known_failures_Linux.json
index ae9b370..c961988 100644
--- a/test/known_failures_Linux.json
+++ b/test/known_failures_Linux.json
@@ -299,6 +299,8 @@
   "nodejs-netcore_json_buffered-ip-ssl",
   "nodejs-netcore_json_framed-ip",
   "nodejs-netcore_json_framed-ip-ssl",
+  "perl-rs_multi_buffered-ip",
+  "perl-rs_multi_framed-ip",
   "rb-cpp_json_buffered-ip",
   "rb-cpp_json_framed-ip",
   "rs-cpp_binary_buffered-ip",
@@ -329,4 +331,4 @@
   "rs-dart_compact_framed-ip",
   "rs-dart_multi-binary_framed-ip",
   "rs-dart_multic-compact_framed-ip"
-]
+]
\ No newline at end of file
diff --git a/test/perl/TestClient.pl b/test/perl/TestClient.pl
index 6f3cbc9..990274c 100755
--- a/test/perl/TestClient.pl
+++ b/test/perl/TestClient.pl
@@ -33,10 +33,12 @@
 use Thrift::BinaryProtocol;
 use Thrift::BufferedTransport;
 use Thrift::FramedTransport;
+use Thrift::MultiplexedProtocol;
 use Thrift::SSLSocket;
 use Thrift::Socket;
 use Thrift::UnixSocket;
 
+use ThriftTest::SecondService;
 use ThriftTest::ThriftTest;
 use ThriftTest::Types;
 
@@ -108,13 +110,21 @@
 }
 
 my $protocol;
-if ($opts{protocol} eq 'binary') {
+my $protocol2;
+if ($opts{protocol} eq 'binary' || $opts{protocol} eq 'multi') {
     $protocol = new Thrift::BinaryProtocol($transport);
 } else {
     usage();
     exit 1;
 }
 
+my $secondService = undef;
+if (index($opts{protocol}, 'multi') == 0) {
+  $protocol2 = new Thrift::MultiplexedProtocol($protocol, "SecondService");
+  $protocol = new Thrift::MultiplexedProtocol($protocol, "ThriftTest");
+  $secondService = new ThriftTest::SecondServiceClient($protocol2);
+}
+
 my $testClient = new ThriftTest::ThriftTestClient($protocol);
 
 eval {
@@ -123,6 +133,14 @@
 if($@){
     die(Dumper($@));
 }
+
+use constant ERR_BASETYPES => 1;
+use constant ERR_STRUCTS => 2;
+use constant ERR_CONTAINERS => 4;
+use constant ERR_EXCEPTIONS => 8;
+use constant ERR_PROTOCOL => 16;
+use constant ERR_UNKNOWN => 64;
+
 my $start = gettimeofday();
 
 #
@@ -138,6 +156,17 @@
 print("testString(\"Test\")");
 my $s = $testClient->testString("Test");
 print(" = \"$s\"\n");
+exit(ERR_BASETYPES) if ($s ne 'Test');
+
+#
+# MULTIPLEXED TEST
+#
+if (index($opts{protocol}, 'multi') == 0) {
+    print("secondtestString(\"Test2\")");
+    $s = $secondService->secondtestString("Test2");
+    print(" = \"$s\"\n");
+    exit(ERR_PROTOCOL) if ($s ne 'testString("Test2")');
+}
 
 #
 # BOOL TEST
@@ -145,9 +174,11 @@
 print("testBool(1)");
 my $t = $testClient->testBool(1);
 print(" = $t\n");
+exit(ERR_BASETYPES) if ($t ne 1);
 print("testBool(0)");
 my $f = $testClient->testBool(0);
 print(" = $f\n");
+exit(ERR_BASETYPES) if ($f ne "");
 
 
 #
@@ -163,13 +194,15 @@
 print("testI32(-1)");
 my $i32 = $testClient->testI32(-1);
 print(" = $i32\n");
+exit(ERR_BASETYPES) if ($i32 ne -1);
 
 #
-#I64 TEST
+# I64 TEST
 #
 print("testI64(-34359738368)");
 my $i64 = $testClient->testI64(-34359738368);
 print(" = $i64\n");
+exit(ERR_BASETYPES) if ($i64 ne -34359738368);
 
 #
 # DOUBLE TEST
@@ -177,6 +210,7 @@
 print("testDouble(-852.234234234)");
 my $dub = $testClient->testDouble(-852.234234234);
 print(" = $dub\n");
+exit(ERR_BASETYPES) if ($dub ne -852.234234234);
 
 #
 # BINARY TEST   ---  TODO
diff --git a/test/perl/TestServer.pl b/test/perl/TestServer.pl
index 1e23ce8..7d8f929 100644
--- a/test/perl/TestServer.pl
+++ b/test/perl/TestServer.pl
@@ -33,11 +33,13 @@
 use Thrift::BinaryProtocol;
 use Thrift::BufferedTransport;
 use Thrift::FramedTransport;
+use Thrift::MultiplexedProcessor;
 use Thrift::SSLServerSocket;
 use Thrift::ServerSocket;
 use Thrift::Server;
 use Thrift::UnixServerSocket;
 
+use ThriftTest::SecondService;
 use ThriftTest::ThriftTest;
 use ThriftTest::Types;
 
@@ -96,7 +98,9 @@
 }
 
 my $handler = new ThriftTestHandler();
+my $handler2 = new SecondServiceHandler();
 my $processor = new ThriftTest::ThriftTestProcessor($handler);
+my $processor2 = new ThriftTest::SecondServiceProcessor($handler2);
 my $serversocket;
 if ($opts{"domain-socket"}) {
     unlink($opts{"domain-socket"});
@@ -116,13 +120,21 @@
     exit 1;
 }
 my $protocol;
-if ($opts{protocol} eq 'binary') {
+if ($opts{protocol} eq 'binary' || $opts{protocol} eq 'multi') {
     $protocol = new Thrift::BinaryProtocolFactory();
 } else {
     usage();
     exit 1;
 }
 
+if (index($opts{protocol}, 'multi') == 0) {
+  my $newProcessor = new Thrift::MultiplexedProcessor($protocol);
+  $newProcessor->defaultProcessor($processor);
+  $newProcessor->registerProcessor("ThriftTest", $processor);
+  $newProcessor->registerProcessor("SecondService", $processor2);
+  $processor = $newProcessor;
+}
+
 my $ssltag = '';
 if ($opts{ssl}) {
     $ssltag = "(SSL)";
@@ -390,11 +402,29 @@
 
 sub testOneway() {
   my $self = shift;
-  my $sleepFor = shift;
-  print("testOneway($sleepFor): Sleeping...\n");
-  sleep $sleepFor;
-  print("testOneway($sleepFor): done sleeping!\n");
+  my $num = shift;
+  print("testOneway($num): received\n");
 }
 
+###
+### Test server implementation
+###
+
+package SecondServiceHandler;
+
+use base qw( ThriftTest::SecondServiceIf );
+
+sub new {
+    my $classname = shift;
+    my $self = {};
+    return bless($self, $classname);
+}
+
+sub secondtestString() {
+  my $self = shift;
+  my $thing = shift;
+  print("testString($thing)\n");
+  return "testString(\"" . $thing . "\")";
+}
 
 1;
diff --git a/test/rs/src/bin/test_client.rs b/test/rs/src/bin/test_client.rs
index 0df2f00..297faf9 100644
--- a/test/rs/src/bin/test_client.rs
+++ b/test/rs/src/bin/test_client.rs
@@ -588,11 +588,15 @@
     actual: Result<T, thrift::Error>,
     expected: T,
 ) -> Result<(), thrift::Error> {
+    info!("*** EXPECTED: Ok({:?})", expected);
+    info!("*** ACTUAL  : {:?}", actual);
     match actual {
         Ok(v) => {
             if v == expected {
+                info!("*** OK ***");
                 Ok(())
             } else {
+                info!("*** FAILED ***");
                 Err(thrift::Error::User(format!("expected {:?} but got {:?}", &expected, &v).into()),)
             }
         }
diff --git a/test/rs/src/bin/test_server.rs b/test/rs/src/bin/test_server.rs
index 81a2ad8..1976bf4 100644
--- a/test/rs/src/bin/test_server.rs
+++ b/test/rs/src/bin/test_server.rs
@@ -391,7 +391,7 @@
 struct SecondServiceSyncHandlerImpl;
 impl SecondServiceSyncHandler for SecondServiceSyncHandlerImpl {
     fn handle_secondtest_string(&self, thing: String) -> thrift::Result<String> {
-        info!("testString({})", &thing);
+        info!("(second)testString({})", &thing);
         let ret = format!("testString(\"{}\")", &thing);
         Ok(ret)
     }
diff --git a/test/tests.json b/test/tests.json
index bde9014..35d0a6c 100644
--- a/test/tests.json
+++ b/test/tests.json
@@ -464,7 +464,8 @@
       "domain"
     ],
     "protocols": [
-      "binary"
+      "binary",
+      "multi"
     ],
     "client": {
       "command": [
@@ -475,6 +476,9 @@
         "--ca=../keys/CA.pem",
         "--cert=../keys/client.crt",
         "--key=../keys/client.key"
+      ],
+      "protocols": [
+        "multi:binary"
       ]
     },
     "server": {
@@ -485,6 +489,9 @@
         "TestServer.pl",
         "--cert=../keys/server.crt",
         "--key=../keys/server.key"
+      ],
+      "protocols": [
+        "binary:multi"
       ]
     },
     "workdir": "perl"