Harald Welte | f09d1ba | 2017-11-25 02:20:13 +0100 | [diff] [blame] | 1 | module MGCP_Adapter { |
| 2 | |
| 3 | import from IPL4asp_Types all; |
| 4 | |
| 5 | import from MGCP_Types all; |
| 6 | import from MGCP_CodecPort all; |
| 7 | import from MGCP_CodecPort_CtrlFunct all; |
| 8 | |
| 9 | import from IPA_Emulation all; |
| 10 | |
| 11 | |
| 12 | type component MGCP_Adapter_CT { |
| 13 | /* MGCP Codec Port for MGCP-over-UDP */ |
| 14 | port MGCP_CODEC_PT MGCP_UDP; |
| 15 | port IPA_MGCP_PT MGCP; |
| 16 | var integer g_mgcp_conn_id := -1; |
| 17 | } |
| 18 | |
| 19 | modulepar { |
| 20 | charstring mp_callagent_ip := "127.0.0.1"; |
| 21 | PortNumber mp_callagent_udp_port := 2727; |
| 22 | charstring mp_mgw_ip := "127.0.0.1"; |
| 23 | PortNumber mp_mgw_udp_port := 2427; |
| 24 | } |
| 25 | |
| 26 | /* build a receive template for receiving a MGCP message. You |
| 27 | * pass the MGCP response template in, and it will generate an |
| 28 | * MGCP_RecvFrom template that can match the primitives arriving on the |
| 29 | * MGCP_CodecPort */ |
| 30 | function tr_MGCP_RecvFrom_R(template MgcpResponse resp) |
| 31 | runs on MGCP_Adapter_CT return template MGCP_RecvFrom { |
| 32 | var template MGCP_RecvFrom mrf := { |
| 33 | connId := g_mgcp_conn_id, |
| 34 | remName := mp_mgw_ip, |
| 35 | remPort := mp_mgw_udp_port, |
| 36 | locName := mp_callagent_ip, |
| 37 | locPort := mp_callagent_udp_port, |
| 38 | msg := { response := resp } |
| 39 | } |
| 40 | return mrf; |
| 41 | } |
| 42 | |
| 43 | |
| 44 | function main() runs on MGCP_Adapter_CT { |
| 45 | var Result res; |
| 46 | map(self:MGCP_UDP, system:MGCP_CODEC_PT); |
| 47 | res := MGCP_CodecPort_CtrlFunct.f_IPL4_connect(MGCP_UDP, mp_mgw_ip, mp_mgw_udp_port, |
| 48 | mp_callagent_ip, mp_callagent_udp_port, |
| 49 | 0, { udp:={} }); |
| 50 | g_mgcp_conn_id := res.connId; |
| 51 | |
| 52 | while (true) { |
| 53 | var MgcpCommand mgcp_cmd; |
| 54 | var MGCP_RecvFrom mrf; |
| 55 | |
| 56 | alt { |
| 57 | /* From BSC/MGW via UDP up to MSC / Call Agent */ |
| 58 | [] MGCP_UDP.receive(tr_MGCP_RecvFrom_R(?)) -> value mrf { |
| 59 | MGCP.send(mrf.msg.response); |
| 60 | } |
| 61 | |
| 62 | /* From MSC / Call Agent down to BSC/MGW */ |
| 63 | [] MGCP.receive(MgcpCommand:?) -> value mgcp_cmd { |
| 64 | var MgcpMessage msg := { command := mgcp_cmd }; |
| 65 | MGCP_UDP.send(t_MGCP_Send(g_mgcp_conn_id, msg)); |
| 66 | } |
| 67 | |
| 68 | } |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | } |