1 | use Coro; |
1 | use Coro; |
2 | use Coro::Semaphore; |
2 | use Coro::Semaphore; |
3 | use Coro::Event; |
3 | use Coro::Event; |
4 | use Coro::Socket; |
4 | use Coro::Socket; |
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5 | |
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6 | use HTTP::Date; |
5 | |
7 | |
6 | no utf8; |
8 | no utf8; |
7 | use bytes; |
9 | use bytes; |
8 | |
10 | |
9 | # at least on my machine, this thingy serves files |
11 | # at least on my machine, this thingy serves files |
… | |
… | |
25 | my $level = shift; |
27 | my $level = shift; |
26 | my $format = shift; |
28 | my $format = shift; |
27 | printf "---: $format\n", @_; |
29 | printf "---: $format\n", @_; |
28 | } |
30 | } |
29 | |
31 | |
30 | my $connections = new Coro::Semaphore $MAX_CONNECTS; |
32 | our $connections = new Coro::Semaphore $MAX_CONNECTS || 250; |
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33 | |
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34 | our $wait_factor = 0.95; |
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35 | |
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36 | our @transfers = ( |
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37 | [(new Coro::Semaphore $MAX_TRANSFERS_SMALL || 50), 1], |
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38 | [(new Coro::Semaphore $MAX_TRANSFERS_LARGE || 50), 1], |
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39 | ); |
31 | |
40 | |
32 | my @newcons; |
41 | my @newcons; |
33 | my @pool; |
42 | my @pool; |
34 | |
43 | |
35 | # one "execution thread" |
44 | # one "execution thread" |
36 | sub handler { |
45 | sub handler { |
37 | while () { |
46 | while () { |
38 | my $new = pop @newcons; |
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39 | if ($new) { |
47 | if (@newcons) { |
40 | eval { |
48 | eval { |
41 | conn->new(@$new)->handle; |
49 | conn->new(@{pop @newcons})->handle; |
42 | }; |
50 | }; |
43 | slog 1, "$@" if $@ && !ref $@; |
51 | slog 1, "$@" if $@ && !ref $@; |
44 | $connections->up; |
52 | $connections->up; |
45 | } else { |
53 | } else { |
46 | last if @pool >= $MAX_POOL; |
54 | last if @pool >= $MAX_POOL; |
… | |
… | |
48 | schedule; |
56 | schedule; |
49 | } |
57 | } |
50 | } |
58 | } |
51 | } |
59 | } |
52 | |
60 | |
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61 | sub listen_on { |
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62 | my $listen = $_[0]; |
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63 | |
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64 | push @listen_sockets, $listen; |
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65 | |
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66 | # the "main thread" |
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67 | async { |
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68 | slog 1, "accepting connections"; |
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69 | while () { |
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70 | $connections->down; |
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71 | push @newcons, [$listen->accept]; |
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72 | #slog 3, "accepted @$connections ".scalar(@pool); |
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73 | if (@pool) { |
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74 | (pop @pool)->ready; |
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75 | } else { |
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76 | async \&handler; |
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77 | } |
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78 | |
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79 | } |
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80 | }; |
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81 | } |
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82 | |
53 | my $http_port = new Coro::Socket |
83 | my $http_port = new Coro::Socket |
54 | LocalAddr => $SERVER_HOST, |
84 | LocalAddr => $SERVER_HOST, |
55 | LocalPort => $SERVER_PORT, |
85 | LocalPort => $SERVER_PORT, |
56 | ReuseAddr => 1, |
86 | ReuseAddr => 1, |
57 | Listen => 50, |
87 | Listen => 50, |
58 | or die "unable to start server"; |
88 | or die "unable to start server"; |
59 | |
89 | |
60 | push @listen_sockets, $http_port; |
90 | listen_on $http_port; |
61 | |
91 | |
62 | # the "main thread" |
92 | my $http_port = new Coro::Socket |
63 | async { |
93 | LocalAddr => $SERVER_HOST, |
64 | slog 1, "accepting connections"; |
94 | LocalPort => $SERVER_PORT2, |
65 | while () { |
95 | ReuseAddr => 1, |
66 | $connections->down; |
96 | Listen => 50, |
67 | push @newcons, [$http_port->accept]; |
97 | or die "unable to start server"; |
68 | #slog 3, "accepted @$connections ".scalar(@pool); |
98 | |
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99 | listen_on $http_port; |
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100 | |
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101 | our $NOW; |
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102 | our $HTTP_NOW; |
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103 | |
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104 | Event->timer(interval => 1, hard => 1, cb => sub { |
69 | $::NOW = time; |
105 | $NOW = time; |
70 | if (@pool) { |
106 | $HTTP_NOW = time2str $NOW; |
71 | (pop @pool)->ready; |
107 | })->now; |
72 | } else { |
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73 | async \&handler; |
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74 | } |
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75 | |
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76 | } |
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77 | }; |
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78 | |
108 | |
79 | package conn; |
109 | package conn; |
80 | |
110 | |
81 | use Socket; |
111 | use Socket; |
82 | use HTTP::Date; |
112 | use HTTP::Date; |
83 | use Convert::Scalar 'weaken'; |
113 | use Convert::Scalar 'weaken'; |
84 | use Linux::AIO; |
114 | use Linux::AIO; |
85 | |
115 | |
86 | Linux::AIO::min_parallel $::AIO_PARALLEL; |
116 | Linux::AIO::min_parallel $::AIO_PARALLEL; |
87 | |
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88 | my $aio_requests = new Coro::Semaphore $::AIO_PARALLEL * 4; |
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89 | |
117 | |
90 | Event->io(fd => Linux::AIO::poll_fileno, |
118 | Event->io(fd => Linux::AIO::poll_fileno, |
91 | poll => 'r', async => 1, |
119 | poll => 'r', async => 1, |
92 | cb => \&Linux::AIO::poll_cb); |
120 | cb => \&Linux::AIO::poll_cb); |
93 | |
121 | |
… | |
… | |
120 | or $self->err(500, "unable to decode peername"); |
148 | or $self->err(500, "unable to decode peername"); |
121 | |
149 | |
122 | $self->{remote_addr} = inet_ntoa $iaddr; |
150 | $self->{remote_addr} = inet_ntoa $iaddr; |
123 | $self->{time} = $::NOW; |
151 | $self->{time} = $::NOW; |
124 | |
152 | |
125 | # enter ourselves into various lists |
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126 | weaken ($conn{$self->{remote_addr}}{$self*1} = $self); |
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127 | |
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128 | $::conns++; |
153 | $::conns++; |
129 | |
154 | |
130 | $self; |
155 | $self; |
131 | } |
156 | } |
132 | |
157 | |
133 | sub DESTROY { |
158 | sub DESTROY { |
134 | my $self = shift; |
159 | my $self = shift; |
135 | |
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136 | $::conns--; |
160 | $::conns--; |
137 | |
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138 | $self->eoconn; |
161 | $self->eoconn; |
139 | delete $conn{$self->{remote_addr}}{$self*1}; |
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140 | } |
162 | } |
141 | |
163 | |
142 | # end of connection |
164 | # end of connection |
143 | sub eoconn { |
165 | sub eoconn { |
144 | my $self = shift; |
166 | my $self = shift; |
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167 | |
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168 | # clean up hints |
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169 | delete $conn{$self->{remote_id}}{$self*1}; |
145 | delete $uri{$self->{remote_addr}}{$self->{uri}}{$self*1}; |
170 | delete $uri{$self->{remote_id}}{$self->{uri}}{$self*1}; |
146 | } |
171 | } |
147 | |
172 | |
148 | sub slog { |
173 | sub slog { |
149 | my $self = shift; |
174 | my $self = shift; |
150 | main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); |
175 | main::slog($_[0], ($self->{remote_id} || $self->{remote_addr}) ."> $_[1]"); |
… | |
… | |
154 | my ($self, $code, $msg, $hdr, $content) = @_; |
179 | my ($self, $code, $msg, $hdr, $content) = @_; |
155 | my $res = "HTTP/1.1 $code $msg\015\012"; |
180 | my $res = "HTTP/1.1 $code $msg\015\012"; |
156 | |
181 | |
157 | $self->{h}{connection} ||= $hdr->{Connection}; |
182 | $self->{h}{connection} ||= $hdr->{Connection}; |
158 | |
183 | |
159 | $res .= "Date: ".(time2str $::NOW)."\015\012"; # slow? nah. :( |
184 | $res .= "Date: $HTTP_NOW\015\012"; |
160 | |
185 | |
161 | while (my ($h, $v) = each %$hdr) { |
186 | while (my ($h, $v) = each %$hdr) { |
162 | $res .= "$h: $v\015\012" |
187 | $res .= "$h: $v\015\012" |
163 | } |
188 | } |
164 | $res .= "\015\012"; |
189 | $res .= "\015\012"; |
… | |
… | |
177 | sub err { |
202 | sub err { |
178 | my $self = shift; |
203 | my $self = shift; |
179 | my ($code, $msg, $hdr, $content) = @_; |
204 | my ($code, $msg, $hdr, $content) = @_; |
180 | |
205 | |
181 | unless (defined $content) { |
206 | unless (defined $content) { |
182 | $content = "$code $msg"; |
207 | $content = "$code $msg\n"; |
183 | $hdr->{"Content-Type"} = "text/plain"; |
208 | $hdr->{"Content-Type"} = "text/plain"; |
184 | $hdr->{"Content-Length"} = length $content; |
209 | $hdr->{"Content-Length"} = length $content; |
185 | } |
210 | } |
186 | $hdr->{"Connection"} = "close"; |
211 | $hdr->{"Connection"} = "close"; |
187 | |
212 | |
… | |
… | |
212 | } |
237 | } |
213 | |
238 | |
214 | $self->{h} = {}; |
239 | $self->{h} = {}; |
215 | |
240 | |
216 | $fh->timeout($::RES_TIMEOUT); |
241 | $fh->timeout($::RES_TIMEOUT); |
217 | my $ip = $self->{remote_addr}; |
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218 | |
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219 | if ($blocked{$ip}) { |
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220 | $self->err_blocked($blocked{$ip}) |
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221 | if $blocked{$ip} > $::NOW; |
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222 | |
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223 | delete $blocked{$ip}; |
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224 | } |
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225 | |
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226 | if (%{$conn{$ip}} > $::MAX_CONN_IP) { |
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227 | $self->slog(2, "blocked ip $ip"); |
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228 | $self->err_blocked; |
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229 | } |
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230 | |
242 | |
231 | $req =~ /^(?:\015\012)? |
243 | $req =~ /^(?:\015\012)? |
232 | (GET|HEAD) \040+ |
244 | (GET|HEAD) \040+ |
233 | ([^\040]+) \040+ |
245 | ([^\040]+) \040+ |
234 | HTTP\/([0-9]+\.[0-9]+) |
246 | HTTP\/([0-9]+\.[0-9]+) |
… | |
… | |
259 | |
271 | |
260 | $self->{h}{$h} = substr $v, 1 |
272 | $self->{h}{$h} = substr $v, 1 |
261 | while ($h, $v) = each %hdr; |
273 | while ($h, $v) = each %hdr; |
262 | } |
274 | } |
263 | |
275 | |
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276 | # remote id should be unique per user |
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277 | my $id = $self->{remote_addr}; |
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278 | |
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279 | if (exists $self->{h}{"client-ip"}) { |
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280 | $id .= "[".$self->{h}{"client-ip"}."]"; |
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281 | } elsif (exists $self->{h}{"x-forwarded-for"}) { |
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282 | $id .= "[".$self->{h}{"x-forwarded-for"}."]"; |
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283 | } |
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284 | |
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285 | $self->{remote_id} = $id; |
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286 | |
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287 | if ($blocked{$id}) { |
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288 | $self->err_blocked($blocked{$id}) |
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289 | if $blocked{$id} > $::NOW; |
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290 | |
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291 | delete $blocked{$id}; |
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292 | } |
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293 | |
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294 | if (%{$conn{$id}} >= $::MAX_CONN_IP) { |
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295 | my $delay = $::PER_TIMEOUT + 15; |
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296 | while (%{$conn{$id}} >= $::MAX_CONN_IP) { |
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297 | if ($delay <= 0) { |
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298 | $self->slog(2, "blocked ip $id"); |
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299 | $self->err_blocked; |
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300 | } else { |
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301 | Coro::Event::do_timer(after => 4); $delay -= 4; |
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302 | } |
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303 | } |
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304 | } |
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305 | |
264 | # find out server name and port |
306 | # find out server name and port |
265 | if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { |
307 | if ($self->{uri} =~ s/^http:\/\/([^\/?#]*)//i) { |
266 | $host = $1; |
308 | $host = $1; |
267 | } else { |
309 | } else { |
268 | $host = $self->{h}{host}; |
310 | $host = $self->{h}{host}; |
… | |
… | |
277 | $host = inet_ntoa $host; |
319 | $host = inet_ntoa $host; |
278 | } |
320 | } |
279 | |
321 | |
280 | $self->{server_name} = $host; |
322 | $self->{server_name} = $host; |
281 | |
323 | |
282 | # remote id should be unique per user |
324 | # enter ourselves into various lists |
283 | $self->{remote_id} = $self->{remote_addr}; |
325 | weaken ($conn{$id}{$self*1} = $self); |
284 | |
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285 | if (exists $self->{h}{"client-ip"}) { |
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286 | $self->{remote_id} .= "[".$self->{h}{"client-ip"}."]"; |
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287 | } elsif (exists $self->{h}{"x-forwarded-for"}) { |
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288 | $self->{remote_id} .= "[".$self->{h}{"x-forwarded-for"}."]"; |
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289 | } |
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290 | |
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291 | weaken ($uri{$self->{remote_addr}}{$self->{uri}}{$self*1} = $self); |
326 | weaken ($uri{$id}{$self->{uri}}{$self*1} = $self); |
292 | |
327 | |
293 | eval { |
328 | eval { |
294 | $self->map_uri; |
329 | $self->map_uri; |
295 | $self->respond; |
330 | $self->respond; |
296 | }; |
331 | }; |
… | |
… | |
405 | $idx); |
440 | $idx); |
406 | } |
441 | } |
407 | |
442 | |
408 | sub handle_file { |
443 | sub handle_file { |
409 | my $self = shift; |
444 | my $self = shift; |
410 | my $length = -s _; |
445 | my $length = $self->{stat}[7]; |
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446 | my $queue = $::transfers[$length >= $::TRANSFER_SMALL]; |
411 | my $hdr = { |
447 | my $hdr = { |
412 | "Last-Modified" => time2str ((stat _)[9]), |
448 | "Last-Modified" => time2str ((stat _)[9]), |
413 | }; |
449 | }; |
414 | |
450 | |
415 | my @code = (200, "ok"); |
451 | my @code = (200, "ok"); |
… | |
… | |
427 | } |
463 | } |
428 | goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; |
464 | goto satisfiable if $l >= 0 && $l < $length && $h >= 0 && $h >= $l; |
429 | } |
465 | } |
430 | $hdr->{"Content-Range"} = "bytes */$length"; |
466 | $hdr->{"Content-Range"} = "bytes */$length"; |
431 | $hdr->{"Content-Length"} = $length; |
467 | $hdr->{"Content-Length"} = $length; |
432 | $self->slog(9, "not satisfiable($self->{h}{range}|".$self->{h}{"user-agent"}.")"); |
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433 | $self->err(416, "not satisfiable", $hdr, ""); |
468 | $self->err(416, "not satisfiable", $hdr, ""); |
434 | |
469 | |
435 | satisfiable: |
470 | satisfiable: |
436 | # check for segmented downloads |
471 | # check for segmented downloads |
437 | if ($l && $::NO_SEGMENTED) { |
472 | if ($l && $::NO_SEGMENTED) { |
438 | my $delay = 180; |
473 | my $delay = $::PER_TIMEOUT + 15; |
439 | while (%{$uri{$self->{remote_addr}}{$self->{uri}}} > 1) { |
474 | while (%{$uri{$self->{remote_id}}{$self->{uri}}} > 1) { |
440 | if ($delay <= 0) { |
475 | if ($delay <= 0) { |
441 | $self->err_segmented_download; |
476 | $self->err_segmented_download; |
442 | } else { |
477 | } else { |
443 | Coro::Event::do_timer(after => 3); $delay -= 3; |
478 | Coro::Event::do_timer(after => 4); $delay -= 4; |
444 | } |
479 | } |
445 | } |
480 | } |
446 | } |
481 | } |
447 | |
482 | |
448 | $hdr->{"Content-Range"} = "bytes $l-$h/$length"; |
483 | $hdr->{"Content-Range"} = "bytes $l-$h/$length"; |
… | |
… | |
459 | $hdr->{"Content-Length"} = $length; |
494 | $hdr->{"Content-Length"} = $length; |
460 | |
495 | |
461 | $self->response(@code, $hdr, ""); |
496 | $self->response(@code, $hdr, ""); |
462 | |
497 | |
463 | if ($self->{method} eq "GET") { |
498 | if ($self->{method} eq "GET") { |
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499 | $self->{time} = $::NOW; |
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500 | |
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501 | my $fudge = $queue->[0]->waiters; |
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502 | $fudge = $fudge ? ($fudge+1)/$fudge : 1; |
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503 | |
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504 | $queue->[1] *= $fudge; |
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505 | my $transfer = $queue->[0]->guard; |
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506 | |
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507 | if ($fudge != 1) { |
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508 | $queue->[1] /= $fudge; |
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509 | $queue->[1] = $queue->[1] * $::wait_factor |
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510 | + ($::NOW - $self->{time}) * (1 - $::wait_factor); |
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511 | } |
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512 | $self->{time} = $::NOW; |
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513 | |
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514 | $self->{fh}->writable or return; |
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515 | |
464 | my ($fh, $buf, $r); |
516 | my ($fh, $buf, $r); |
465 | my $current = $Coro::current; |
517 | my $current = $Coro::current; |
466 | open $fh, "<", $self->{path} |
518 | open $fh, "<", $self->{path} |
467 | or die "$self->{path}: late open failure ($!)"; |
519 | or die "$self->{path}: late open failure ($!)"; |
468 | |
520 | |
… | |
… | |
477 | while ($h > 0) { |
529 | while ($h > 0) { |
478 | if (0) { |
530 | if (0) { |
479 | sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h |
531 | sysread $fh, $buf, $h > $::BUFSIZE ? $::BUFSIZE : $h |
480 | or last; |
532 | or last; |
481 | } else { |
533 | } else { |
482 | undef $buf; |
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483 | $aio_requests->down; |
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484 | aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), |
534 | aio_read($fh, $l, ($h > $::BUFSIZE ? $::BUFSIZE : $h), |
485 | $buf, 0, sub { |
535 | $buf, 0, sub { |
486 | $r = $_[0]; |
536 | $r = $_[0]; |
487 | $current->ready; |
537 | Coro::ready($current); |
488 | }); |
538 | }); |
489 | &Coro::schedule; |
539 | &Coro::schedule; |
490 | $aio_requests->up; |
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491 | last unless $r; |
540 | last unless $r; |
492 | } |
541 | } |
493 | my $w = $self->{fh}->syswrite($buf) |
542 | my $w = syswrite $self->{fh}, $buf |
494 | or last; |
543 | or last; |
495 | $::written += $w; |
544 | $::written += $w; |
496 | $self->{written} += $w; |
545 | $self->{written} += $w; |
497 | $l += $r; |
546 | $l += $r; |
498 | } |
547 | } |
499 | } |
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500 | |
548 | |
501 | close $fh; |
549 | close $fh; |
|
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550 | } |
502 | } |
551 | } |
503 | |
552 | |
504 | 1; |
553 | 1; |