External TCP port monitor 5150

1. find response in hex when server returns 0 and 1. for example, 300a is 0 and 310a is 1 (0x30 is 0, 0x31 is 1, 0x0a is new line). 

 returning 0

[root@ve10:Active] config  telnet 200.200.200.101 5150
Trying 200.200.200.101...
Connected to 200.200.200.101 (200.200.200.101).
Escape character is '^]'.
0
Connection closed by foreign host.

[root@ve10:Active] config  tcpdump -nni 0.0 -s0 port 5150 -X
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on 0.0, link-type EN10MB (Ethernet), capture size 65535 bytes
...snippe...
00:24:49.071099 IP 200.200.200.101.5150 > 200.200.200.10.60808: P 1:3(2) ack 1 win 46  in slot1/tmm0 lis=
        0x0000:  0ffd 0800 4500 0036 9130 4000 4006 8790  ....E..6.0@.@...
        0x0010:  c8c8 c865 c8c8 c80a 141e ed88 6a64 c8c1  ...e........jd..
        0x0020:  305e 94d7 8018 002e 25ef 0000 0101 080a  0^......%.......
        0x0030:  23fc 59f1 5ded 28ad 300a 0114 0001 0000  .Y.].(.0.......
        0x0040:  0000 0000 0000 0000 0000 0000 0000 0000  ................
...snippe...

 returning 1

[root@ve10:Active] config  telnet 200.200.200.101 5150
Trying 200.200.200.101...
Connected to 200.200.200.101 (200.200.200.101).
Escape character is '^]'.
1
Connection closed by foreign host.

[root@ve10:Active] config  tcpdump -nni 0.0 -s0 port 5150 -X
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on 0.0, link-type EN10MB (Ethernet), capture size 65535 bytes
...snipped...
00:26:19.146301 IP 200.200.200.101.5150 > 200.200.200.10.60825: P 1:3(2) ack 1 win 46  in slot1/tmm0 lis=
        0x0000:  0ffd 0800 4500 0036 4240 4000 4006 d680  ....E..6B@@.@...
        0x0010:  c8c8 c865 c8c8 c80a 141e ed99 f54f fb90  ...e.........O..
        0x0020:  647e 06bf 8018 002e 015f 0000 0101 080a  d~......._......
        0x0030:  23fd b9d0 5dee 8888 310a 0114 0001 0000  ...]...1.......
        0x0040:  0000 0000 0000 0000 0000 0000 0000 0000  ................
...snipped...

2. configure tcp health monitor

[root@ve10:Active] config  b monitor mytcp list
monitor mytcp {
   defaults from tcp
   recv "\x31\x0a"
}

3. assign monitor to pool
[root@ve10:Active] config  b pool foo list
pool foo {
   monitor all mytcp
   members 200.200.200.101:5150 {}
}

4. test

 when returning 1

[root@ve10:Active] config  b pool foo|grep -i pool\ member
+-> POOL MEMBER foo/200.200.200.101:5150   active,up

 when returning 0

[root@ve10:Active] config  b pool foo|grep -i pool\ member
+-> POOL MEMBER foo/200.200.200.101:5150   inactive,down