mgw/MGCP_Test.ttcn

module MGCP_Test {
	import from MGCP_Types all;
	import from SDP_Types all;
	import from MGCP_CodecPort all;
	import from MGCP_CodecPort_CtrlFunct all;
	import from IPL4asp_Types all;

	type component dummy_CT {
		port MGCP_CODEC_PT MGCP;
		var boolean initialized := false;
		var ConnectionId g_conn_id := -1;
		var integer g_trans_id;
	};

	function get_next_trans_id() runs on dummy_CT return MgcpTransId {
		var MgcpTransId tid := int2str(g_trans_id);
		g_trans_id := g_trans_id + 1;
		return tid;
	}

	modulepar {
		PortNumber mp_local_udp_port := 2727;
		charstring mp_local_ip := "127.0.0.1";
		PortNumber mp_remote_udp_port := 2427;
		charstring mp_remote_ip := "127.0.0.1";
	}

	private function f_init()runs on dummy_CT {
		var Result res;
		if (initialized == true) {
			return;
		}
		initialized := true;

		g_trans_id := float2int(rnd()*65535.0);
		map(self:MGCP, system:MGCP_CODEC_PT);
		res := f_IPL4_connect(MGCP, mp_remote_ip, mp_remote_udp_port, mp_local_ip, mp_local_udp_port, 0, { udp := {} });
		g_conn_id := res.connId;
	}

	/* 3.2.2.6 Connection Mode (sendonly, recvonly, sendrecv, confrnce, inactive, loopback,
	 * conttest, netwloop, netwtest) */
	template MgcpParameter t_MgcpParConnMode(template MgcpConnectionMode mode) := { "M", mode };

	/* 3.2.2.2 CallId: maximum 32 hex chars */
	template MgcpParameter ts_MgcpParCallId(MgcpCallId cid) := {
		code := "C",
		val := hex2str(cid)
	};

	/* 3.2.2.18 RequestIdentifier: Maximum 32 hex chars */
	template MgcpParameter ts_MgcpParReqId(MgcpRequestId rid) := {
		code := "X",
		val := hex2str(rid)
	};

	/* 3.2.2.10: LocalConnectionOptions (codec, packetization, bandwidth, ToS, eco, gain, silence, ...) */
	template MgcpParameter t_MgcpParLocConnOpt(template charstring lco) := { "L", lco };

	/* 3.2.2.5: ConnectionId: maximum 32 hex chars */
	template MgcpParameter ts_MgcpParConnectionId(MgcpConnectionId cid) := {
		code := "I",
		val := hex2str(cid)
	};

	/* osmo-bsc_mgcp implements L/C/M/X only, osmo-mgw adds 'I' */
	/* SDP: osmo-bsc_mgcp implements Tx of v,o,s,c,t,m,a */

	template MgcpCommandLine t_MgcpCmdLine(template charstring verb, template MgcpTransId trans_id, template charstring ep) := {
		verb := verb,
		trans_id := trans_id,
		ep := ep,
		ver := "1.0"
	};

	template MgcpCommand ts_CRCX(MgcpTransId trans_id, charstring ep, MgcpConnectionMode mode, MgcpCallId call_id, template SDP_Message sdp := omit) := {
		line := t_MgcpCmdLine("CRCX", trans_id, ep),
		params := {
			t_MgcpParConnMode(mode),
			ts_MgcpParCallId(call_id),
			//t_MgcpParReqId(omit),
			t_MgcpParLocConnOpt("p: 20")
		},
		sdp := sdp
	}

	testcase TC_selftest() runs on dummy_CT {
		const charstring c_auep := "AUEP 158663169 ds/e1-1/2@172.16.6.66 MGCP 1.0\r\n";
		const charstring c_mdcx3 := "MDCX 18983215 1@mgw MGCP 1.0\r\n";
		const charstring c_mdcx3_ret := "200 18983215 OK\r\n" &
						"I: 1\n" &
						"\n" &
						"v=0\r\n" &
						"o=- 1 23 IN IP4 0.0.0.0\r\n" &
						"s=-\r\n" &
						"c=IN IP4 0.0.0.0\r\n" &
						"t=0 0\r\n" &
						"m=audio 0 RTP/AVP 126\r\n" &
						"a=rtpmap:126 AMR/8000\r\n" &
						"a=ptime:20\r\n";
		const charstring c_mdcx4 :=	"MDCX 18983216 1@mgw MGCP 1.0\r\n" &
						"M: sendrecv\r" &
						"C: 2\r\n" &
						"I: 1\r\n" &
						"L: p:20, a:AMR, nt:IN\r\n" &
						"\n" &
						"v=0\r\n" &
						"o=- 1 23 IN IP4 0.0.0.0\r\n" &
						"s=-\r\n" &
						"c=IN IP4 0.0.0.0\r\n" &
						"t=0 0\r\n" &
						"m=audio 4441 RTP/AVP 99\r\n" &
						"a=rtpmap:99 AMR/8000\r\n" &
						"a=ptime:40\r\n";
		const charstring c_crcx510_ret := "510 23 FAIL\r\n"

		log(c_auep);
		log(dec_MgcpCommand(c_auep));

		log(c_mdcx3);
		log(dec_MgcpCommand(c_mdcx3));

		log(c_mdcx3_ret);
		log(dec_MgcpResponse(c_mdcx3_ret));

		log(c_mdcx4);
		log(dec_MgcpCommand(c_mdcx4));

		log(ts_CRCX("23", "42@mgw", "sendrecv", '1234'H));
		log(enc_MgcpCommand(valueof(ts_CRCX("23", "42@mgw", "sendrecv", '1234'H))));

		log(c_crcx510_ret);
		log(dec_MgcpResponse(c_crcx510_ret));
		log(dec_MgcpMessage(c_crcx510_ret));
	}

	testcase TC_crcx() runs on dummy_CT {
		var MGCP_RecvFrom mrf;
		timer T := 5.0;

		f_init();

		var MgcpMessage msg := { command := valueof(ts_CRCX("23", "42@mgw", "sendrecv", '1234'H)) };
		MGCP.send(t_MGCP_Send(g_conn_id, msg));
		T.start;
		alt {
			[] MGCP.receive(MGCP_RecvFrom:?) -> value mrf { log(mrf); }
			[] MGCP.receive { repeat; }
			[] T.timeout { setverdict(fail); }
		}
		T.stop;
	}

	control {
		execute(TC_selftest());
		execute(TC_crcx());
	}
}