See here is the DRM player(i.e. VGConnect here)requesting decryption key via POST method.
See/Download full file here captured via wireshark.
Now help to understand its data.
when stream about to play within app then First one is:::>
Code:
POST http://14.140.112.54:443/dccs/tickets HTTP/1.1
Accept: */*
NDS-Protocol-Version: 2.0
NDS-User-Agent: V01-3.6-#0x80000171-DEV0x00000001-1.6.2.0
NDS-Request-Type: New
NDS-User-Id: 04-033F03D003A7E88C-261272567864DB81
NDS-Body-Status: Signed
NDS-ESCookie: 0101000000063220934C1B27878C3C65AE35D5EFF770A3CFFB53F53AAB24DA85DE437E3DBD1F801EC64D0C57506133CC2E08B9D4F2CE79CA7590F75EF6BDEAE94C583C16A09EBC5C671167F85BBF65294E13006D206195AD242B78C3F524BF101DDF63DEA24A
NDS-Authorization: challenge=009B0E090B80DAC3B2FEC04031F01D6D;response=E7F9E1CF10529CA7C6CECD0A9D726F5B
NDS-Uuid: 261272567864DB81
NDS-Content-Ref: 0002
NDS-Fields-In-MAC: NDS-User-Agent, NDS-Request-Type, NDS-User-Id, NDS-Content-Ref
User-Agent: I_con
Host: 14.140.112.54
Content-Length: 0
Cache-Control: no-cache
HTTP/1.1 200 OK
NDS-Protocol-Version: 2.0
NDS-Concurrency-SessionId: 5080fbbb33736174384bb71bcf8d6d54b71f42e3
NDS-Authorization: challenge=009B0E090B80DAC3B2FEC04031F01D6D; response=5bc1a2e97cac85f9ef895e1c69c60416
NDS-Body-Status: Signed
Content-Type: application/octet-stream
Content-Length: 110
...........b........... ...................
...............2..2!...6..jN.aQ.8q...i...Y?.C....z
..g.....G.k....POST /dccs/tickets HTTP/1.1
Accept: */*
NDS-Protocol-Version: 2.0
NDS-User-Agent: V01-3.6-#0x80000171-DEV0x00000001-1.6.2.0
NDS-Request-Type: Renew
NDS-User-Id: 04-033F03D003A7E88C-261272567864DB81
NDS-Body-Status: Signed
NDS-ESCookie: 0101000000063220934C1B27878C3C65AE35D5EFF770A3CFFB53F53AAB24DA85DE437E3DBD1F801EC64D0C57506133CC2E08B9D4F2CE79CA7590F75EF6BDEAE94C583C16A09EBC5C671167F85BBF65294E13006D206195AD242B78C3F524BF101DDF63DEA24A
NDS-Authorization: challenge=009B0E0A0D48F241DF6FFCA1DAFF5315;response=932A7B4BA526387634D82E05FFB07BF2
NDS-Uuid: 261272567864DB81
NDS-Content-Ref: 0002
NDS-Concurrency-SessionId: 5080fbbb33736174384bb71bcf8d6d54b71f42e3
NDS-Fields-In-MAC: NDS-User-Agent, NDS-Request-Type, NDS-User-Id, NDS-Content-Ref, NDS-Concurrency-SessionId
User-Agent: I_con
Host: 14.140.112.54
Content-Length: 0
Cache-Control: no-cache
HTTP/1.1 200 OK
NDS-Protocol-Version: 2.0
NDS-Concurrency-SessionId: 5080fbbb33736174384bb71bcf8d6d54b71f42e3
NDS-Authorization: challenge=009B0E0A0D48F241DF6FFCA1DAFF5315; response=f20a75c1b8dcb95d59d7eee3f104616b
NDS-Body-Status: Signed
Content-Type: application/octet-stream
Content-Length: 110
...........b...........
...
...............................2..2!....r.Vf;$.....A.Pv95...qQ..V.a..
Z<9q....)M.^POST /dccs/tickets HTTP/1.1
Accept: */*
NDS-Protocol-Version: 2.0
NDS-User-Agent: V01-3.6-#0x80000171-DEV0x00000001-1.6.2.0
NDS-Request-Type: Release
NDS-User-Id: 04-033F03D003A7E88C-261272567864DB81
NDS-Body-Status: Signed
NDS-ESCookie: 0101000000063220934C1B27878C3C65AE35D5EFF770A3CFFB53F53AAB24DA85DE437E3DBD1F801EC64D0C57506133CC2E08B9D4F2CE79CA7590F75EF6BDEAE94C583C16A09EBC5C671167F85BBF65294E13006D206195AD242B78C3F524BF101DDF63DEA24A
NDS-Authorization: challenge=009B0E0B0C7F03D162EC968C71A2548D;response=479D13C752332C2107B3015EDFCA82BF
NDS-Uuid: 261272567864DB81
NDS-Content-Ref: 0002
NDS-Concurrency-SessionId: 5080fbbb33736174384bb71bcf8d6d54b71f42e3
NDS-Fields-In-MAC: NDS-User-Agent, NDS-Request-Type, NDS-User-Id, NDS-Content-Ref, NDS-Concurrency-SessionId
User-Agent: I_con
Host: 14.140.112.54
Content-Length: 0
Cache-Control: no-cache
HTTP/1.1 200 OK
NDS-Protocol-Version: 2.0
NDS-Concurrency-SessionId: 5080fbbb33736174384bb71bcf8d6d54b71f42e3
Content-Length: 0
and Second is::>
Code:
POST http://14.140.112.54:443/DRMS HTTP/1.1
Accept: */*
NDS-Protocol-Version: 2.0
NDS-User-Agent: V01-3.6-#0x80000171-DEV0x00000001-1.6.2.0
NDS-Request-Type: ForwardRequest
NDS-User-Id: 04-033F03D003A7E88C-261272567864DB81
NDS-Body-Status: Encrypted
NDS-Target-Url: DRMS
NDS-ESCookie: 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
NDS-Authorization: challenge=46E2CC061EC5CE06009B0E0900;response=D5874509C11DC650ED1F2389A2033BA1
NDS-Fields-In-MAC: BODY, NDS-User-Agent, NDS-Request-Type, NDS-User-Id, NDS-Target-Url
User-Agent: I_con
Host: 14.140.112.54:443
Content-Length: 473
Cache-Control: no-cache
9.....Ug].F..A..qc.....3.5....D..S.@.R.2
FS..
...:..=..|b'...*iL8A. ....M...".....n.Z...n.............O.....N.Hs.j"....z*..,_B....!.e:... u.T...2....1...j.dh....a..Q.x..Q.....?.X.R..$A...y..~..}.y..O$.N.N.3..4....?A....ku..s..."./S._....w..v.....n}..SK...8.Z
]}.M..24.._U&...A.6.E+..`.../.....cu......W....D.e. u.$..Y.K.*.1.^...R..t_H....e.P..b.wZ.p.....
..e....T...R..\.`.......b2.....N,.;...,...J...Y.p[........-....0.5......g./..../. ..J...H0.&S1>B..Ou...../?K.Z[...A..^HTTP/1.1 200 OK
Nds-Protocol-Version: 2.0
Content-Length: 842
Server: Jetty(8.1.7.v20120910)
Via: 1.1 sgw
Content-Type: application/octet-stream
Nds-Body-Status: Encrypted
NDS-Authorization: challenge=46e2cc061ec5ce06009b0e0900; response=667ca97eb5f62f868fbd78801f37673e
.y..`.....p.....YN...2.. y$...k..,...0.
TO^...(.{..._....{.....c..%$..>.....7.......O.R.e..1........r..>x...`&#<.g....o:.A.....Y.}[...`K...|..'.3`%<}hyl..`B.N.......I....U.^....q.....W.......\H.n.>G.%W.M..W..D......,......}...G`../...-K......s....|b[.......J .......B....h..:A?Jt....$lU..,..W+X}..}I.......j. ....V..n.L.......%.}6S&U.
...-..a.O....1..8..R\..#~ ...I.._..9........%...A.T>. .P..D...#..p..!....O.].i?.v3.)C......w].kL.B.........B.&......}SO| .@......7.eG\...t.=.'c.LRm...A .,.$...w.'U.Wvy....a.<,[o.x...v.AY....z.&..T..yTakH..'59.@l.T..R.......>..H....a.j......N!1 ...d^3GB=`p..Svq.[...........A.P.f.c...j..<..Az`
4{#N/.f.@E......d........%..Tp.7...cG......W.u.2.!.....9;) ....}.'..wG...>...ln.
Y}....:.d.*...eeS.o....%~......j.oS..g.9.....pM.......1.N.._.4.]M.j*#;e.8....D.<..tc....?...........dJw.-......k.d=............hWC*..