000002c0  16 03 03 00 ac 0c 00 00  a8 03 00 1d 20 2b 66 1d  |............ +f.|
000002d0  80 f2 60 32 0f af 6f d3  03 db 28 c1 33 18 1c 5d  |..`2..o...(.3..]|
000002e0  71 fd 2a 24 f9 3c 4d 76  ca e3 93 8d 25 08 04 00  |q.*$.<Mv....%...|
000002f0  80 23 e3 34 5f 28 df b8  c9 fd 39 35 a9 bb 14 f9  |.#.4_(....95....|
00000300  05 77 09 6f 2f e5 91 07  c3 6f cd 57 2a de 7e 93  |.w.o/....o.W*.~.|

00000010  3b 49 31 64 aa 42 a7 8c  a2 4d 00 a7 9c b9 b6 9c  |;I1d.B...M......|
00000020  0d 2f 09 81 e8 ab 74 77  11 fe 0b 20 e0 b9 92 4d  |./....tw... ...M|
00000030  e2 70 fd 58 ec 58 02 f2  b3 44 d2 3d 7f c9 ad ca  |.p.X.X...D.=....|
00000040  5c 78 fe f9 36 67 a8 b7  a8 0f 7a 1a c0 13 00 00  |\x..6g....z.....|
00000050  11 ff 01 00 01 00 00 0b  00 04 03 00 01 02 00 17  |................|

000000d0  02 03 01 00 33 00 47 00  45 00 17 00 41 04 1e 18  |....3.G.E...A...|
000000e0  37 ef 0d 19 51 88 35 75  71 b5 e5 54 5b 12 2e 8f  |7...Q.5uq..T[...|
000000f0  09 67 fd a7 24 20 3e b2  56 1c ce 97 28 5e f8 2b  |.g..$ >.V...(^.+|
00000100  2d 4f 9e f1 07 9f 6c 4b  5b 83 56 e2 32 42 e9 58  |-O....lK[.V.2B.X|
00000110  b6 d7 49 a6 b5 68 1a 41  03 56 6b dc 5a 89        |..I..h.A.Vk.Z.|

		f()
		return
	}
	orig := poll.TestHookDidSendFile
	defer func() {
		poll.TestHookDidSendFile = orig
	}()
	var (
		called     bool
		gotHandled bool
		gotFD      *poll.FD
	)
	poll.TestHookDidSendFile = func(dstFD *poll.FD, src int, written int64, err error, handled bool) {
		if called {
			t.Error("internal/poll.SendFile called multiple times, want one call")
		}
		called = true
		gotHandled = handled

000001a0  90 02 10 55 85 49 48 89  d8 d6 4b 68 29 cb 28 66  |...U.IH...Kh).(f|
000001b0  1c d1 97 e6 a0 10 90 63  83 96 33 ee 5a 5a 5b 66  |.......c..3.ZZ[f|
000001c0  ca b3 0d be 6d 70 c5 de  fd 78 c8 f8 e1 c5 78 ef  |....mp...x....x.|
000001d0  07 2e 60 06 28 86 ed e6  bd 7b 37 33 0e 06 5e 06  |..`.(....{73..^.|
000001e0  fb 44 2b 96 16 fe 09 30  dc 03 53 bc c9 f9 6f 1e  |.D+....0..S...o.|

>>> Flow 2 (server to client)
00000000  16 03 03 00 5d 02 00 00  59 03 03 60 13 bb 4b ce  |....]...Y..`..K.|
00000010  d6 49 3b b2 3a 0c d4 5a  e8 25 26 67 41 fd dd 0f  |.I;.:..Z.%&gA...|
00000020  62 ec c1 ab bc 58 92 67  9d 71 fd 20 20 4c ab 4d  |b....X.g.q.  L.M|
00000030  85 ce 87 49 68 8c cf 9c  2f 7b f9 2b 96 62 8a 75  |...Ih.../{.+.b.u|
00000040  c3 21 05 c6 ab b6 98 5e  e7 e5 d8 4a c0 30 00 00  |.!.....^...J.0..|

		return rv, rc, rn
	}
	return -1, -1, -1
}

func BpxClose(fd int32) (rv int32, rc int32, rn int32) {
	var parms [4]unsafe.Pointer
	parms[0] = unsafe.Pointer(&fd)
	parms[1] = unsafe.Pointer(&rv)
	parms[2] = unsafe.Pointer(&rc)
	parms[3] = unsafe.Pointer(&rn)
	bpxcall(parms[:], BPX4CLO)
	return rv, rc, rn
}

func BpxFileFStat(fd int32, st *Bpxystat_t) (rv int32, rc int32, rn int32) {

			&n, nil, 0)
	})
	return sendRecvMsgFunc.err
}

func WSASendMsg(fd syscall.Handle, msg *WSAMsg, flags uint32, bytesSent *uint32, overlapped *syscall.Overlapped, croutine *byte) error {
	err := loadWSASendRecvMsg()
	if err != nil {
		return err
	}

00000120  7b 1a 4d 12 c8 bf ff 07  39 a9 4e 4e d7 45 35 23  |{.M.....9.NN.E5#|
00000130  9b f9 59 6d a5 b0 49 1b  5f e7 42 62 17 00 1e 57  |..Ym..I._.Bb...W|
00000140  53 c5 22 fb 05 89 fd fe  5d de 71 e8 26 fd 6d e3  |S.".....].q.&.m.|
00000150  fc b9 cb 1f d5 d4 84 d1  67 fe 8a a0 74 ff ad ff  |........g...t...|
00000160  c8 35 fe c2 9a 17 33 18  51 c2 cd 19 7c dc 5d c5  |.5....3.Q...|.].|

00000110  81 00 db 46 7d 93 2e 12  27 06 48 bc 06 28 21 ab  |...F}...'.H..(!.|
00000120  7e c4 b6 a2 5d fe 1e 52  45 88 7a 36 47 a5 08 0d  |~...]..RE.z6G...|
00000130  92 42 5b c2 81 c0 be 97  79 98 40 fb 4f 6d 14 fd  |.B[.....y.@.Om..|
00000140  2b 13 8b c2 a5 2e 67 d8  d4 09 9e d6 22 38 b7 4a  |+.....g....."8.J|
00000150  0b 74 73 2b c2 34 f1 d1  93 e5 96 d9 74 7b f3 58  |.ts+.4......t{.X|