| 1 | #! perl # mandatory depends=tcp |
1 | #! perl # mandatory depends=tcp |
| 2 | |
2 | |
| 3 | # websocket server on base port, called by tcp.ext |
3 | # websocket protocol server, actually only the handshake part |
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4 | |
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5 | use Digest::SHA1 (); |
| 4 | |
6 | |
| 5 | # websocket requests can be very long, and we want the tcp code to buffer for us |
7 | # websocket requests can be very long, and we want the tcp code to buffer for us |
| 6 | our $detector = ext::tcp::register websocket => 4096, sub { |
8 | our $detector = ext::tcp::register websocket => 4096, sub { |
| 7 | m{^(?:(?i)GET) /ws .*\015\012\015\012}s |
9 | m{^(?i:GET) \ (?i:http://[^/]+)? /ws \ (?:(?i)HTTP/[0-9\.]+)}xs |
| 8 | }, sub { |
10 | }, sub { |
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11 | my ($id, $fh, $buf) = @_; |
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12 | |
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13 | $buf =~ /^Sec-WebSocket-Version\s*:\s*([0-9]+)/mi |
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14 | or return; |
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15 | my $version = $1; # 8 ff10, 13 rfc |
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16 | |
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17 | $buf =~ /^Sec-WebSocket-Key\s*:\s*(\S+)/mi |
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18 | or return; |
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19 | my $key = $1; |
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20 | |
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21 | if ($version != 8 && $version != 13) { |
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22 | syswrite $fh, "HTTP/1.1 400 version mismatch\015\012" |
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23 | . "connection: close\015\012" |
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24 | . "sec-websocket-version: 13, 8\015\012\015\012"; |
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25 | return; |
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26 | } |
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27 | |
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28 | my $res = "HTTP/1.1 101 upgrading\015\012" |
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29 | . "connection: upgrade\015\012" |
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30 | . "upgrade: websocket\015\012" |
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31 | . "sec-websocket-accept: " . (Digest::SHA1::sha1_base64 $key . "258EAFA5-E914-47DA-95CA-C5AB0DC85B11") . "=\015\012" |
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32 | . "\015\012"; |
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33 | |
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34 | syswrite $fh, $res; |
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35 | |
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36 | my $ns = cf::client::create fileno $_[1], $_[0]; |
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37 | $ns->ws_version ($version); |
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38 | $ns->run; |
| 9 | }; |
39 | }; |
| 10 | |
40 | |
