I've been trying to modify the htmlget.d example for std.socketstream
(http://www.d-programming-language.org/phobos/std_socketstream.html) to
be able to download a file. My code ends up looking like this at the end:
auto outfile = new std.stream.File(destination, FileMode.Out);
outfile.copyFrom(ss, bytes_needed);
I get bytes_needed from the Content-Length header. The I get the correct
number of bytes from the Content-Length, bytes_needed gets the right
value, but the resulting file isn't right. The file has the right number
of bytes, but I appear to have an extra '0a' at the very beginning of
the file, but if I do 'ss.getchar()', to get rid of it, I get an
exception that there's not enough data in the stream.
Here's the output from hexdump that I'm basing my analysis from. Sorry
if it doesn't come through 100% formatted correctly.
[kai@server _source]$ hexdump -C correct_file.exe | head
00000000 4d 5a 60 00 01 00 00 00 04 00 10 00 ff ff 00 00
|MZ`.............|
00000010 fe 00 00 00 12 00 00 00 40 00 00 00 00 00 00 00
|........@.......|
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000030 00 00 00 00 00 00 00 00 00 00 00 00 60 00 00 00
|............`...|
00000040 52 65 71 75 69 72 65 73 20 57 69 6e 33 32 20 20 |Requires
Win32 |
00000050 20 24 16 1f 33 d2 b4 09 cd 21 b8 01 4c cd 21 00 |
$..3....!..L.!.|
00000060 50 45 00 00 4c 01 06 00 00 00 00 00 00 00 00 00
|PE..L...........|
00000070 00 00 00 00 e0 00 8e 81 0b 01 08 00 00 7e 28 00
|.............~(.|
00000080 00 02 00 00 00 00 00 00 8c d7 27 00 00 20 00 00
|..........'.. ..|
00000090 00 a0 28 00 00 00 40 00 00 10 00 00 00 02 00 00
|..(...@.........|
[kai@server _source]$ hexdump -C downloaded_file.exe | head
00000000 0a 4d 5a 60 00 01 00 00 00 04 00 10 00 ff ff 00
|.MZ`............|
00000010 00 fe 00 00 00 12 00 00 00 40 00 00 00 00 00 00
|.........@......|
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 60 00 00
|.............`..|
00000040 00 52 65 71 75 69 72 65 73 20 57 69 6e 33 32 20 |.Requires
Win32 |
00000050 20 20 24 16 1f 33 d2 b4 09 cd 21 b8 01 4c cd 21 |
$..3....!..L.!|
00000060 00 50 45 00 00 4c 01 06 00 00 00 00 00 00 00 00
|.PE..L..........|
00000070 00 00 00 00 00 e0 00 8e 81 0b 01 08 00 00 7e 28
|..............~(|
00000080 00 00 02 00 00 00 00 00 00 8c d7 27 00 00 20 00
|...........'.. .|
00000090 00 00 a0 28 00 00 00 40 00 00 10 00 00 00 02 00
|...(...@........|
[kai@server _source]$ hexdump -C correct_file.exe | tail
002b5c10 80 30 84 30 88 30 8c 30 90 30 94 30 98 30 9c 30
|.0.0.0.0.0.0.0.0|
002b5c20 a0 30 a4 30 a8 30 ac 30 b0 30 b4 30 b8 30 bc 30
|.0.0.0.0.0.0.0.0|
002b5c30 c0 30 c4 30 c8 30 cc 30 d0 30 d4 30 d8 30 dc 30
|.0.0.0.0.0.0.0.0|
002b5c40 f4 30 f8 30 fc 30 00 31 64 31 68 31 6c 31 70 31
|.0.0.0.1d1h1l1p1|
002b5c50 74 31 38 37 00 00 00 00 00 00 00 00 00 00 00 00
|t187............|
002b5c60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
002b5e00 00 00 00 00 00 00 00 00 00 00 00 00 02 00 00 00
|................|
002b5e10 00 00 00 00 00 00 00 00 00 00 00 00 |............|
002b5e1c
[kai@server _source]$ hexdump -C downloaded_file.exe | tail
002b5c10 30 80 30 84 30 88 30 8c 30 90 30 94 30 98 30 9c
|0.0.0.0.0.0.0.0.|
002b5c20 30 a0 30 a4 30 a8 30 ac 30 b0 30 b4 30 b8 30 bc
|0.0.0.0.0.0.0.0.|
002b5c30 30 c0 30 c4 30 c8 30 cc 30 d0 30 d4 30 d8 30 dc
|0.0.0.0.0.0.0.0.|
002b5c40 30 f4 30 f8 30 fc 30 00 31 64 31 68 31 6c 31 70
|0.0.0.0.1d1h1l1p|
002b5c50 31 74 31 38 37 00 00 00 00 00 00 00 00 00 00 00
|1t187...........|
002b5c60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
002b5e00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 00 00
|................|
002b5e10 00 00 00 00 00 00 00 00 00 00 00 00 |............|
