华为 FCC 协议的问题 response too short for unicast fields (24 bytes) #440
Description
IPTV盒子抓包中所有的FCC包在以下附件，需要改后缀FCC.pcapng
播放时rtp2httpd日志如下
11:15:15 INFO [Worker 0] New client 192.168.110.90:10559 requested URL: /rtp/225.1.4.73:1102?fcc=10.254.216.130:8027&fcc-type=huawei (method: GET)
11:15:15 INFO [Worker 0] FCC: Using Huawei FCC protocol
11:15:15 WARN [Worker 0] FCC (Huawei): response too short for unicast fields (24 bytes)
11:15:15 INFO [Worker 0] Multicast: Successfully joined group
11:18:30 INFO [Worker 0] New client 192.168.110.90:8593 requested URL: /rtp/225.1.4.73:1102?fcc=10.254.216.130:8027&fcc-type=huawei (method: GET)
11:18:30 INFO [Worker 0] FCC: Using Huawei FCC protocol
11:18:30 WARN [Worker 0] FCC (Huawei): response too short for unicast fields (24 bytes)
11:18:30 INFO [Worker 0] Multicast: Successfully joined group
11:18:45 INFO [Worker 1] New client 192.168.110.90:2943 requested URL: /status/api/log-level (method: PUT)
11:18:50 DEBUG [Worker 0] Client connection error: Connection reset by peer
11:18:50 DEBUG [Worker 0] FCC: Sending termination packet (cleanup)
11:18:50 DEBUG [Worker 0] FCC (Huawei): Termination packet (FMT 9) sent (cleanup), seqn=0
11:18:50 DEBUG [Worker 0] FCC: Socket closed
11:18:50 DEBUG [Worker 0] Multicast: Socket closed
11:18:50 INFO [Worker 1] New client 192.168.110.90:2945 requested URL: /rtp/225.1.4.73:1102?fcc=10.254.216.130:8027&fcc-type=huawei (method: GET)
11:18:50 DEBUG [Worker 1] Parsed RTP URL: mcast=225.1.4.73:1102
11:18:50 DEBUG [Worker 1] fcc=10.254.216.130:8027
11:18:50 DEBUG [Worker 1] FCC type explicitly set to Huawei
11:18:50 DEBUG [Worker 1] Created RTP service from URL: /rtp/225.1.4.73:1102?fcc=10.254.216.130:8027&fcc-type=huawei
11:18:50 INFO [Worker 1] FCC: Using Huawei FCC protocol
11:18:50 DEBUG [Worker 1] FCC: Initializing FCC session and sending request
11:18:50 DEBUG [Worker 1] FCC: Bound client socket to port 40064
11:18:50 DEBUG [Worker 1] FCC: Socket registered with poller
11:18:50 DEBUG [Worker 1] FCC: Using local IP from interface eth1: 10.50.168.216
11:18:50 DEBUG [Worker 1] FCC (Huawei): Request (FMT 5) sent to server 10.254.216.130:8027 (local 10.50.168.216:40064)
11:18:50 DEBUG [Worker 1] FCC State: INIT -> REQUESTED (Request sent)
11:18:50 DEBUG [Worker 1] FCC (Huawei): Response received: result=1, type=3
11:18:50 DEBUG [Worker 1] FCC (Huawei): Server redirect to 10.254.216.197:8027 (redirect #1)
11:18:50 DEBUG [Worker 1] FCC State: REQUESTED -> INIT (Server redirect)
11:18:50 DEBUG [Worker 1] FCC: Initializing FCC session and sending request
11:18:50 DEBUG [Worker 1] FCC: Using local IP from interface eth1: 10.50.168.216
11:18:50 DEBUG [Worker 1] FCC (Huawei): Request (FMT 5) sent to server 10.254.216.197:8027 (local 10.50.168.216:40064)
11:18:50 DEBUG [Worker 1] FCC State: INIT -> REQUESTED (Request sent)
11:18:50 DEBUG [Worker 1] FCC (Huawei): Response received: result=1, type=2
11:18:50 WARN [Worker 1] FCC (Huawei): response too short for unicast fields (24 bytes)
11:18:50 DEBUG [Worker 1] FCC State: REQUESTED -> MCAST_ACTIVE (Short response)
11:18:50 INFO [Worker 1] Multicast: Successfully joined group
11:18:50 DEBUG [Worker 1] Multicast: Socket registered with poller
11:18:50 DEBUG [Worker 1] RTP reorder: Init complete, base_seq=3456 (8 packets collected)