On 31/07/2012 09:48, Alex Peshkoff wrote:

The most interesting question now is - what fixes do we need to make
fbclient work?

I've tried to use the libfbclient with Necessitas. I used the IBase driver compiled for Android Arm.

The libfbclient is load, seems to apparently runs.
The libfbclient manage to contact the firebird server but there is problems during communication. I used Wireshark to look at the traffic and I've seen packet's error during the communication, packet from libfbclient.

In view of the fact that my local server and my virtual device have the same IP adress, is not easy to read... But you can look at the ports : gds-db is my server on local machine and the 50946 and 50947 ports are the virtual machine. The virtual device try twice time to connect despite that the server responds OK twice time. And after that, it's impossible to execute a query, the result is "the database is not open"

I add attachments of txt and wireshark version of the capture file.

Jean-Louis Meuriot

Attachment: firebirdtraffic.wireshark
Description: Binary data

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      1 0.000000    127.0.0.1             127.0.0.1             TCP      74     
50946 > gds-db [SYN] Seq=0 Win=32792 Len=0 MSS=16396 SACK_PERM=1 TSval=6216421 
TSecr=0 WS=16 50946       gds-db

Frame 1: 74 bytes on wire (592 bits), 74 bytes captured (592 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50946 (50946), Dst Port: gds-db 
(3050), Seq: 0, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      2 0.000010    127.0.0.1             127.0.0.1             TCP      74     
gds-db > 50946 [SYN, ACK] Seq=0 Ack=1 Win=32768 Len=0 MSS=16396 SACK_PERM=1 
TSval=6216421 TSecr=6216421 WS=16 gds-db      50946

Frame 2: 74 bytes on wire (592 bits), 74 bytes captured (592 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50946 
(50946), Seq: 0, Ack: 1, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      3 0.000015    127.0.0.1             127.0.0.1             TCP      66     
50946 > gds-db [ACK] Seq=1 Ack=1 Win=32800 Len=0 TSval=6216421 TSecr=6216421 
50946       gds-db

Frame 3: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50946 (50946), Dst Port: gds-db 
(3050), Seq: 1, Ack: 1, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      4 0.001439    127.0.0.1             127.0.0.1             GDS DB   538    
Connect: /home/menlog/compilation/employee.fdb[Malformed Packet] 50946       
gds-db

Frame 4: 538 bytes on wire (4304 bits), 538 bytes captured (4304 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50946 (50946), Dst Port: gds-db 
(3050), Seq: 1, Ack: 1, Len: 472
Firebird SQL Database Remote Protocol
    Opcode: Connect (1)
    Operation: Attach (19)
    Version: 2
    Client Architecture: Linux (36)
    Filename: /home/menlog/compilation/employee.fdb
    Version option count: 0
[Malformed Packet: FB/IB GDS DB]
    [Expert Info (Error/Malformed): Malformed Packet (Exception occurred)]
        [Message: Malformed Packet (Exception occurred)]
        [Severity level: Error]
        [Group: Malformed]

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      5 0.001450    127.0.0.1             127.0.0.1             TCP      66     
gds-db > 50946 [ACK] Seq=1 Ack=473 Win=32768 Len=0 TSval=6216422 TSecr=6216422 
gds-db      50946

Frame 5: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50946 
(50946), Seq: 1, Ack: 473, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      6 0.001519    127.0.0.1             127.0.0.1             GDS DB   82     
Accept                                                          gds-db      
50946

Frame 6: 82 bytes on wire (656 bits), 82 bytes captured (656 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50946 
(50946), Seq: 1, Ack: 473, Len: 16
Firebird SQL Database Remote Protocol
    Opcode: Accept (3)
    Version: 4294934540
    Architecture: Generic (1)

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      7 0.001531    127.0.0.1             127.0.0.1             TCP      66     
50946 > gds-db [ACK] Seq=473 Ack=17 Win=32784 Len=0 TSval=6216422 TSecr=6216422 
50946       gds-db

Frame 7: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50946 (50946), Dst Port: gds-db 
(3050), Seq: 473, Ack: 17, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      8 0.008749    127.0.0.1             127.0.0.1             GDS DB   198    
Attach: /home/menlog/compilation/employee.fdb                   50946       
gds-db

Frame 8: 198 bytes on wire (1584 bits), 198 bytes captured (1584 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50946 (50946), Dst Port: gds-db 
(3050), Seq: 473, Ack: 17, Len: 132
Firebird SQL Database Remote Protocol
    Opcode: Attach (19)
    Database: 0
    Filename: /home/menlog/compilation/employee.fdb
    Database parameter block: 37 data bytes

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
      9 0.048050    127.0.0.1             127.0.0.1             TCP      66     
gds-db > 50946 [ACK] Seq=17 Ack=605 Win=32768 Len=0 TSval=6216434 TSecr=6216424 
gds-db      50946

Frame 9: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50946 
(50946), Seq: 17, Ack: 605, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     10 0.056777    127.0.0.1             127.0.0.1             GDS DB   178    
Response                                                        gds-db      
50946

Frame 10: 178 bytes on wire (1424 bits), 178 bytes captured (1424 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50946 
(50946), Seq: 17, Ack: 605, Len: 112
Firebird SQL Database Remote Protocol
    Opcode: Response (9)
    Response object: 0x00000000
    Blob ID: 0x0000000000000000
    Data: 
    Status vector

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     11 0.061822    127.0.0.1             127.0.0.1             TCP      70     
50946 > gds-db [PSH, ACK] Seq=605 Ack=129 Win=32768 Len=4 TSval=6216437 
TSecr=6216436 50946       gds-db

Frame 11: 70 bytes on wire (560 bits), 70 bytes captured (560 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50946 (50946), Dst Port: gds-db 
(3050), Seq: 605, Ack: 129, Len: 4
Data (4 bytes)

0000  00 00 00 06                                       ....
    Data: 00000006
    [Length: 4]

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     12 0.061847    127.0.0.1             127.0.0.1             TCP      66     
gds-db > 50946 [ACK] Seq=129 Ack=609 Win=32768 Len=0 TSval=6216437 
TSecr=6216437 gds-db      50946

Frame 12: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50946 
(50946), Seq: 129, Ack: 609, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     13 0.061893    127.0.0.1             127.0.0.1             TCP      66     
gds-db > 50946 [FIN, ACK] Seq=129 Ack=609 Win=32768 Len=0 TSval=6216437 
TSecr=6216437 gds-db      50946

Frame 13: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50946 
(50946), Seq: 129, Ack: 609, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     14 0.063821    127.0.0.1             127.0.0.1             TCP      66     
50946 > gds-db [FIN, ACK] Seq=609 Ack=130 Win=32768 Len=0 TSval=6216437 
TSecr=6216437 50946       gds-db

Frame 14: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50946 (50946), Dst Port: gds-db 
(3050), Seq: 609, Ack: 130, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     15 0.063834    127.0.0.1             127.0.0.1             TCP      66     
gds-db > 50946 [ACK] Seq=130 Ack=610 Win=32768 Len=0 TSval=6216437 
TSecr=6216437 gds-db      50946

Frame 15: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50946 
(50946), Seq: 130, Ack: 610, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     16 0.172592    127.0.0.1             127.0.0.1             TCP      74     
50947 > gds-db [SYN] Seq=0 Win=32792 Len=0 MSS=16396 SACK_PERM=1 TSval=6216465 
TSecr=0 WS=16 50947       gds-db

Frame 16: 74 bytes on wire (592 bits), 74 bytes captured (592 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50947 (50947), Dst Port: gds-db 
(3050), Seq: 0, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     17 0.172604    127.0.0.1             127.0.0.1             TCP      74     
gds-db > 50947 [SYN, ACK] Seq=0 Ack=1 Win=32768 Len=0 MSS=16396 SACK_PERM=1 
TSval=6216465 TSecr=6216465 WS=16 gds-db      50947

Frame 17: 74 bytes on wire (592 bits), 74 bytes captured (592 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50947 
(50947), Seq: 0, Ack: 1, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     18 0.172612    127.0.0.1             127.0.0.1             TCP      66     
50947 > gds-db [ACK] Seq=1 Ack=1 Win=32800 Len=0 TSval=6216465 TSecr=6216465 
50947       gds-db

Frame 18: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50947 (50947), Dst Port: gds-db 
(3050), Seq: 1, Ack: 1, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     19 0.174419    127.0.0.1             127.0.0.1             GDS DB   538    
Connect: /home/menlog/compilation/employee.fdb[Malformed Packet] 50947       
gds-db

Frame 19: 538 bytes on wire (4304 bits), 538 bytes captured (4304 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50947 (50947), Dst Port: gds-db 
(3050), Seq: 1, Ack: 1, Len: 472
Firebird SQL Database Remote Protocol
    Opcode: Connect (1)
    Operation: Attach (19)
    Version: 2
    Client Architecture: Linux (36)
    Filename: /home/menlog/compilation/employee.fdb
    Version option count: 0
[Malformed Packet: FB/IB GDS DB]
    [Expert Info (Error/Malformed): Malformed Packet (Exception occurred)]
        [Message: Malformed Packet (Exception occurred)]
        [Severity level: Error]
        [Group: Malformed]

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     20 0.174437    127.0.0.1             127.0.0.1             TCP      66     
gds-db > 50947 [ACK] Seq=1 Ack=473 Win=32768 Len=0 TSval=6216465 TSecr=6216465 
gds-db      50947

Frame 20: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50947 
(50947), Seq: 1, Ack: 473, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     21 0.174849    127.0.0.1             127.0.0.1             GDS DB   82     
Accept                                                          gds-db      
50947

Frame 21: 82 bytes on wire (656 bits), 82 bytes captured (656 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50947 
(50947), Seq: 1, Ack: 473, Len: 16
Firebird SQL Database Remote Protocol
    Opcode: Accept (3)
    Version: 4294934540
    Architecture: Generic (1)

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     22 0.174861    127.0.0.1             127.0.0.1             TCP      66     
50947 > gds-db [ACK] Seq=473 Ack=17 Win=32784 Len=0 TSval=6216465 TSecr=6216465 
50947       gds-db

Frame 22: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50947 (50947), Dst Port: gds-db 
(3050), Seq: 473, Ack: 17, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     23 0.177981    127.0.0.1             127.0.0.1             GDS DB   198    
Attach: /home/menlog/compilation/employee.fdb                   50947       
gds-db

Frame 23: 198 bytes on wire (1584 bits), 198 bytes captured (1584 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50947 (50947), Dst Port: gds-db 
(3050), Seq: 473, Ack: 17, Len: 132
Firebird SQL Database Remote Protocol
    Opcode: Attach (19)
    Database: 0
    Filename: /home/menlog/compilation/employee.fdb
    Database parameter block: 37 data bytes

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     24 0.212199    127.0.0.1             127.0.0.1             GDS DB   178    
Response                                                        gds-db      
50947

Frame 24: 178 bytes on wire (1424 bits), 178 bytes captured (1424 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50947 
(50947), Seq: 17, Ack: 605, Len: 112
Firebird SQL Database Remote Protocol
    Opcode: Response (9)
    Response object: 0x00000000
    Blob ID: 0x0000000000000000
    Data: 
    Status vector

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     25 0.213187    127.0.0.1             127.0.0.1             TCP      70     
50947 > gds-db [PSH, ACK] Seq=605 Ack=129 Win=32768 Len=4 TSval=6216475 
TSecr=6216475 50947       gds-db

Frame 25: 70 bytes on wire (560 bits), 70 bytes captured (560 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50947 (50947), Dst Port: gds-db 
(3050), Seq: 605, Ack: 129, Len: 4
Data (4 bytes)

0000  00 00 00 06                                       ....
    Data: 00000006
    [Length: 4]

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     26 0.213248    127.0.0.1             127.0.0.1             TCP      66     
gds-db > 50947 [FIN, ACK] Seq=129 Ack=609 Win=32768 Len=0 TSval=6216475 
TSecr=6216475 gds-db      50947

Frame 26: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50947 
(50947), Seq: 129, Ack: 609, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     27 0.213461    127.0.0.1             127.0.0.1             TCP      66     
50947 > gds-db [FIN, ACK] Seq=609 Ack=130 Win=32768 Len=0 TSval=6216475 
TSecr=6216475 50947       gds-db

Frame 27: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: 50947 (50947), Dst Port: gds-db 
(3050), Seq: 609, Ack: 130, Len: 0

No.     Time        Source                Destination           Protocol Length 
Info                                                            Source Port 
Destination port
     28 0.213474    127.0.0.1             127.0.0.1             TCP      66     
gds-db > 50947 [ACK] Seq=130 Ack=610 Win=32768 Len=0 TSval=6216475 
TSecr=6216475 gds-db      50947

Frame 28: 66 bytes on wire (528 bits), 66 bytes captured (528 bits)
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 
(00:00:00:00:00:00)
Internet Protocol Version 4, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 
(127.0.0.1)
Transmission Control Protocol, Src Port: gds-db (3050), Dst Port: 50947 
(50947), Seq: 130, Ack: 610, Len: 0
------------------------------------------------------------------------------
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