GSUP: add inter-MSC handover related msgs and IEs

Based on a draft created by Neels, which is the result of reading a MAP
trace of two MSCs negotiating inter-MSC handovers, and of reading the
TS 29.002, TS 29.010 and related specs:
https://lists.osmocom.org/pipermail/openbsc/2019-January/012653.html

I figured out that the "Handover Number" mentioned in the specifications
is the same as the MSISDN IE that we already have, so we can use that
instead of creating a new IE (example usage in tests/gsup/gsup_test.c).

Create a new OSMO_GSUP_MSGT_E_ROUTING_ERROR message type, which the GSUP
server uses to tell a client that its message could not be forwarded to
the destination (see [1]). MAP has no related message.

[1]: Change-Id: Ia4f345abc877baaf0a8f73b8988e6514d9589bf5 (osmo-hlr.git)

Related: OS#3774
Change-Id: Ic00b0601eacff6d72927cea51767801142ee75db

3 files changed, 347 insertions, 4 deletions

diff --git a/tests/gsup/gsup_test.c b/tests/gsup/gsup_test.c
index 0631a514..b84c88f0 100644
--- a/tests/gsup/gsup_test.c
+++ b/tests/gsup/gsup_test.c
@@ -9,9 +9,16 @@
 
 /* Tests for osmo_gsup_messages.c */
 
+/* Complete IEs used multiple times (sorted alphabetically)
+ * 1st byte: IEI from osmo_gsup_iei, 2nd byte: length */
 #define TEST_IMSI_IE 0x01, 0x08, 0x21, 0x43, 0x65, 0x87, 0x09, 0x21, 0x43, 0xf5
 #define TEST_IMSI_STR "123456789012345"
 #define TEST_CLASS_SUBSCR_IE 0xa, 0x1, 0x1
+#define TEST_CLASS_INTER_MSC_IE 0xa, 0x1, 0x4
+#define TEST_MSISDN_IE 0x08, 0x07, 0x91, 0x94, 0x61, 0x46, 0x32, 0x24, 0x43
+#define TEST_AN_APDU_IE 0x62, 0x05, 0x01, 0x42, 0x42, 0x42, 0x42
+#define TEST_SOURCE_NAME_IE 0x60, 0x05, 'M', 'S', 'C', '-', 'A'
+#define TEST_DESTINATION_NAME_IE 0x61, 0x05, 'M', 'S', 'C', '-', 'B'
 
 static void test_gsup_messages_dec_enc(void)
 {
@@ -66,8 +73,7 @@ static void test_gsup_messages_dec_enc(void)
 	static const uint8_t update_location_res[] = {
 		0x06,
 		TEST_IMSI_IE,
-		0x08, 0x07, /* MSISDN of the subscriber */
-			0x91, 0x94, 0x61, 0x46, 0x32, 0x24, 0x43,
+		TEST_MSISDN_IE,
 		0x09, 0x07, /* HLR-Number of the subscriber */
 			0x91, 0x83, 0x52, 0x38, 0x48, 0x83, 0x93,
 		0x04, 0x00, /* PDP info complete */
@@ -312,6 +318,217 @@ static void test_gsup_messages_dec_enc(void)
 			0x00, /* OSMO_GSUP_IMEI_RESULT_ACK */
 	};
 
+	/* Handover related test messages. Oftentimes they only differ in the
+	 * AN_APDU_IE, which is mostly a blob in GSUP. To give a better example
+	 * of how the messages can be used, I've added the information an_apdu
+	 * holds in brackets (see osmo-msc.git's doc/interMSC_HO_GSUP_msgs.txt).
+	 * The session states are from the ASCII art in this e-mail:
+	 * https://lists.osmocom.org/pipermail/openbsc/2019-January/012653.html */
+	static const uint8_t send_e_prepare_handover_req[] = {
+		0x34, /* OSMO_GSUP_MSGT_E_PREPARE_HANDOVER_REQUEST */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (begin) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x01,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+		TEST_AN_APDU_IE, /* (Handover Request) */
+	};
+
+	static const uint8_t send_e_prepare_handover_err[] = {
+		0x35, /* OSMO_GSUP_MSGT_E_PREPARE_HANDOVER_ERROR */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (continue) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x02,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+
+		/* cause_bssap */
+		0x64, 0x01,
+			0x51, /* GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS */
+	};
+
+	static const uint8_t send_e_prepare_handover_res[] = {
+		0x36, /* OSMO_GSUP_MSGT_E_PREPARE_HANDOVER_RESULT */
+		TEST_IMSI_IE,
+		TEST_MSISDN_IE, /* (Handover Number) */
+
+		/* Session ID and state (continue) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x02,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+		TEST_AN_APDU_IE, /* (Handover Request Ack) */
+	};
+
+	static const uint8_t send_e_prepare_subsequent_handover_req[] = {
+		0x38, /* OSMO_GSUP_MSGT_E_PREPARE_SUBSEQUENT_HANDOVER_REQUEST */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (begin) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x01,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+		TEST_AN_APDU_IE, /* (Handover Required) */
+	};
+
+	static const uint8_t send_e_prepare_subsequent_handover_err[] = {
+		0x39, /* OSMO_GSUP_MSGT_E_PREPARE_SUBSEQUENT_HANDOVER_ERROR */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (continue) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x02,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+
+		/* cause_bssap */
+		0x64, 0x01,
+			0x51, /* GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS */
+	};
+
+	static const uint8_t send_e_prepare_subsequent_handover_res[] = {
+		0x3A, /* OSMO_GSUP_MSGT_E_PREPARE_SUBSEQUENT_HANDOVER_RESULT */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (continue) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x02,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+		TEST_AN_APDU_IE, /* (Handover Request Ack) */
+	};
+
+	static const uint8_t send_e_send_end_signal_req[] = {
+		0x3C, /* OSMO_GSUP_MSGT_E_SEND_END_SIGNAL_REQUEST */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (end) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x03,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+		TEST_AN_APDU_IE, /* (Handover Complete) */
+	};
+
+	static const uint8_t send_e_send_end_signal_err[] = {
+		0x3D, /* OSMO_GSUP_MSGT_E_SEND_END_SIGNAL_ERROR */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (continue) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x02,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+
+		/* cause_bssap */
+		0x64, 0x01,
+			0x51, /* GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS */
+	};
+
+	static const uint8_t send_e_process_access_signalling_req[] = {
+		0x40, /* OSMO_GSUP_MSGT_E_PROCESS_ACCESS_SIGNALLING_REQUEST */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (continue) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x02,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+		TEST_AN_APDU_IE, /* (Handover Detect) */
+	};
+
+	static const uint8_t send_e_send_end_signal_res[] = {
+		0x3E, /* OSMO_GSUP_MSGT_E_SEND_END_SIGNAL_RESULT */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (end) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x03,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+		TEST_AN_APDU_IE, /* (Handover Complete) */
+	};
+
+	static const uint8_t send_e_forward_access_signalling_req [] = {
+		0x44, /* OSMO_GSUP_MSGT_E_FORWARD_ACCESS_SIGNALLING_REQUEST */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (continue) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x02,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+		TEST_AN_APDU_IE, /* (DTAP, e.g. CC, SMS, ...) */
+	};
+
+	static const uint8_t send_e_close[] = {
+		0x47, /* OSMO_GSUP_MSGT_E_CLOSE */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (end) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x03,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+	};
+
+	static const uint8_t send_e_abort[] = {
+		0x4B, /* OSMO_GSUP_MSGT_E_ABORT */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (end) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x03,
+
+		TEST_CLASS_INTER_MSC_IE,
+
+		/* cause_bssap */
+		0x64, 0x01,
+			0x51, /* GSM0808_CAUSE_INVALID_MESSAGE_CONTENTS */
+	};
+
+	static const uint8_t send_e_routing_error[] = {
+		0x4E, /* OSMO_GSUP_MSGT_E_ROUTING_ERROR */
+		TEST_IMSI_IE,
+
+		/* Session ID and state (end) */
+		0x30, 0x04, 0xde, 0xad, 0xbe, 0xef,
+		0x31, 0x01, 0x03,
+
+		TEST_CLASS_INTER_MSC_IE,
+		TEST_SOURCE_NAME_IE,
+		TEST_DESTINATION_NAME_IE,
+	};
+
 	static const struct test {
 		char *name;
 		const uint8_t *data;
@@ -367,6 +584,34 @@ static void test_gsup_messages_dec_enc(void)
 			send_check_imei_err, sizeof(send_check_imei_err)},
 		{"Check IMEI Result",
 			send_check_imei_res, sizeof(send_check_imei_res)},
+		{"E Prepare Handover Request",
+			send_e_prepare_handover_req, sizeof(send_e_prepare_handover_req)},
+		{"E Prepare Handover Error",
+			send_e_prepare_handover_err, sizeof(send_e_prepare_handover_err)},
+		{"E Prepare Handover Result",
+			send_e_prepare_handover_res, sizeof(send_e_prepare_handover_res)},
+		{"E Prepare Subsequent Handover Request",
+			send_e_prepare_subsequent_handover_req, sizeof(send_e_prepare_subsequent_handover_req)},
+		{"E Prepare Subsequent Handover Error",
+			send_e_prepare_subsequent_handover_err, sizeof(send_e_prepare_subsequent_handover_err)},
+		{"E Prepare Subsequent Handover Result",
+			send_e_prepare_subsequent_handover_res, sizeof(send_e_prepare_subsequent_handover_res)},
+		{"E Send End Signal Request",
+			send_e_send_end_signal_req, sizeof(send_e_send_end_signal_req)},
+		{"E Send End Signal Error",
+			send_e_send_end_signal_err, sizeof(send_e_send_end_signal_err)},
+		{"E Send End Signal Result",
+			send_e_send_end_signal_res, sizeof(send_e_send_end_signal_res)},
+		{"E Process Access Signalling Request",
+			send_e_process_access_signalling_req, sizeof(send_e_process_access_signalling_req)},
+		{"E Forward Access Signalling Request",
+			send_e_forward_access_signalling_req, sizeof(send_e_forward_access_signalling_req)},
+		{"E Close",
+			send_e_close, sizeof(send_e_close)},
+		{"E Abort",
+			send_e_abort, sizeof(send_e_abort)},
+		{"E Routing Error",
+			send_e_routing_error, sizeof(send_e_routing_error)},
 	};
 
 	printf("Test GSUP message decoding/encoding\n");
diff --git a/tests/gsup/gsup_test.err b/tests/gsup/gsup_test.err
index 92838231..e5fe6ee3 100644
--- a/tests/gsup/gsup_test.err
+++ b/tests/gsup/gsup_test.err
@@ -73,6 +73,48 @@
   generated message: 32 01 08 21 43 65 87 09 21 43 f5 51 01 00 
   original message:  32 01 08 21 43 65 87 09 21 43 f5 51 01 00 
   IMSI:              123456789012345
+  generated message: 34 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 01 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  original message:  34 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 01 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  IMSI:              123456789012345
+  generated message: 35 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 64 01 51 
+  original message:  35 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 64 01 51 
+  IMSI:              123456789012345
+  generated message: 36 01 08 21 43 65 87 09 21 43 f5 08 07 91 94 61 46 32 24 43 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  original message:  36 01 08 21 43 65 87 09 21 43 f5 08 07 91 94 61 46 32 24 43 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  IMSI:              123456789012345
+  generated message: 38 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 01 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  original message:  38 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 01 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  IMSI:              123456789012345
+  generated message: 39 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 64 01 51 
+  original message:  39 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 64 01 51 
+  IMSI:              123456789012345
+  generated message: 3a 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  original message:  3a 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  IMSI:              123456789012345
+  generated message: 3c 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  original message:  3c 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  IMSI:              123456789012345
+  generated message: 3d 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 64 01 51 
+  original message:  3d 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 64 01 51 
+  IMSI:              123456789012345
+  generated message: 3e 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  original message:  3e 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  IMSI:              123456789012345
+  generated message: 40 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  original message:  40 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  IMSI:              123456789012345
+  generated message: 44 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  original message:  44 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 02 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 62 05 01 42 42 42 42 
+  IMSI:              123456789012345
+  generated message: 47 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 
+  original message:  47 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 
+  IMSI:              123456789012345
+  generated message: 4b 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 64 01 51 
+  original message:  4b 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 64 01 51 
+  IMSI:              123456789012345
+  generated message: 4e 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 
+  original message:  4e 01 08 21 43 65 87 09 21 43 f5 30 04 de ad be ef 31 01 03 0a 01 04 60 05 4d 53 43 2d 41 61 05 4d 53 43 2d 42 
+  IMSI:              123456789012345
   message 0: tested 14 truncations, 13 parse failures
   message 1: tested 14 truncations, 13 parse failures
   message 2: tested 83 truncations, 81 parse failures
@@ -98,19 +140,33 @@
   message 22: tested 22 truncations, 21 parse failures
   message 23: tested 14 truncations, 13 parse failures
   message 24: tested 14 truncations, 13 parse failures
+  message 25: tested 44 truncations, 38 parse failures
+  message 26: tested 40 truncations, 34 parse failures
+  message 27: tested 53 truncations, 46 parse failures
+  message 28: tested 44 truncations, 38 parse failures
+  message 29: tested 40 truncations, 34 parse failures
+  message 30: tested 44 truncations, 38 parse failures
+  message 31: tested 44 truncations, 38 parse failures
+  message 32: tested 40 truncations, 34 parse failures
+  message 33: tested 44 truncations, 38 parse failures
+  message 34: tested 44 truncations, 38 parse failures
+  message 35: tested 44 truncations, 38 parse failures
+  message 36: tested 37 truncations, 32 parse failures
+  message 37: tested 26 truncations, 22 parse failures
+  message 38: tested 37 truncations, 32 parse failures
 DLGSUP Stopping DLGSUP logging
   message 0: tested 3584 modifications, 771 parse failures
   message 1: tested 3584 modifications, 770 parse failures
   message 2: tested 21248 modifications, 2575 parse failures
   message 3: tested 2816 modifications, 510 parse failures
   message 4: tested 3584 modifications, 770 parse failures
-  message 5: tested 20736 modifications, 4022 parse failures
+  message 5: tested 20736 modifications, 4023 parse failures
   message 6: tested 3584 modifications, 771 parse failures
   message 7: tested 3584 modifications, 770 parse failures
   message 8: tested 2816 modifications, 510 parse failures
   message 9: tested 2816 modifications, 510 parse failures
   message 10: tested 3584 modifications, 770 parse failures
-  message 11: tested 3328 modifications, 769 parse failures
+  message 11: tested 3328 modifications, 770 parse failures
   message 12: tested 54016 modifications, 4626 parse failures
   message 13: tested 11520 modifications, 1026 parse failures
   message 14: tested 5120 modifications, 1030 parse failures
@@ -124,3 +180,17 @@ DLGSUP Stopping DLGSUP logging
   message 22: tested 5632 modifications, 771 parse failures
   message 23: tested 3584 modifications, 770 parse failures
   message 24: tested 3584 modifications, 771 parse failures
+  message 25: tested 11264 modifications, 2058 parse failures
+  message 26: tested 10240 modifications, 2060 parse failures
+  message 27: tested 13568 modifications, 2313 parse failures
+  message 28: tested 11264 modifications, 2058 parse failures
+  message 29: tested 10240 modifications, 2060 parse failures
+  message 30: tested 11264 modifications, 2058 parse failures
+  message 31: tested 11264 modifications, 2057 parse failures
+  message 32: tested 10240 modifications, 2060 parse failures
+  message 33: tested 11264 modifications, 2057 parse failures
+  message 34: tested 11264 modifications, 2058 parse failures
+  message 35: tested 11264 modifications, 2058 parse failures
+  message 36: tested 9472 modifications, 1803 parse failures
+  message 37: tested 6656 modifications, 1546 parse failures
+  message 38: tested 9472 modifications, 1803 parse failures
diff --git a/tests/gsup/gsup_test.ok b/tests/gsup/gsup_test.ok
index 70f723c0..db8bc2f6 100644
--- a/tests/gsup/gsup_test.ok
+++ b/tests/gsup/gsup_test.ok
@@ -49,4 +49,32 @@ Test GSUP message decoding/encoding
           Check IMEI Error OK
   Testing Check IMEI Result
           Check IMEI Result OK
+  Testing E Prepare Handover Request
+          E Prepare Handover Request OK
+  Testing E Prepare Handover Error
+          E Prepare Handover Error OK
+  Testing E Prepare Handover Result
+          E Prepare Handover Result OK
+  Testing E Prepare Subsequent Handover Request
+          E Prepare Subsequent Handover Request OK
+  Testing E Prepare Subsequent Handover Error
+          E Prepare Subsequent Handover Error OK
+  Testing E Prepare Subsequent Handover Result
+          E Prepare Subsequent Handover Result OK
+  Testing E Send End Signal Request
+          E Send End Signal Request OK
+  Testing E Send End Signal Error
+          E Send End Signal Error OK
+  Testing E Send End Signal Result
+          E Send End Signal Result OK
+  Testing E Process Access Signalling Request
+          E Process Access Signalling Request OK
+  Testing E Forward Access Signalling Request
+          E Forward Access Signalling Request OK
+  Testing E Close
+          E Close OK
+  Testing E Abort
+          E Abort OK
+  Testing E Routing Error
+          E Routing Error OK
 Done.