From c8f042aef4c9e9d41eb9d81fab7ad2a074f0037e Mon Sep 17 00:00:00 2001
From: Slava Pestov <slava@factorcode.org>
Date: Sat, 9 Feb 2008 21:34:42 -0600
Subject: [PATCH] Redo timeouts

---
 core/inference/inference-tests.factor        |  3 +-
 core/io/io-docs.factor                       |  9 +--
 core/io/io.factor                            |  1 -
 core/io/streams/duplex/duplex.factor         |  5 --
 extra/delegate/protocols/protocols.factor    |  2 +-
 extra/http/client/client.factor              |  4 +-
 extra/http/server/server.factor              |  2 +-
 extra/io/launcher/launcher.factor            | 26 +++++---
 extra/io/nonblocking/nonblocking-docs.factor |  2 -
 extra/io/nonblocking/nonblocking.factor      | 56 ++++------------
 extra/io/streams/null/null.factor            |  4 +-
 extra/io/timeouts/timeouts.factor            | 67 ++++++++++++++++++++
 extra/io/unix/backend/backend.factor         |  4 +-
 extra/io/windows/ce/sockets/sockets.factor   |  2 +-
 extra/io/windows/nt/backend/backend.factor   |  2 +-
 extra/io/windows/nt/files/files.factor       | 12 ++--
 extra/io/windows/nt/monitors/monitors.factor |  7 +-
 extra/io/windows/nt/sockets/sockets.factor   |  6 +-
 extra/smtp/server/server.factor              |  4 +-
 extra/smtp/smtp.factor                       |  9 +--
 20 files changed, 129 insertions(+), 98 deletions(-)
 create mode 100755 extra/io/timeouts/timeouts.factor
 mode change 100644 => 100755 extra/smtp/server/server.factor

diff --git a/core/inference/inference-tests.factor b/core/inference/inference-tests.factor
index c5bc3b5fda..2691be8c3a 100755
--- a/core/inference/inference-tests.factor
+++ b/core/inference/inference-tests.factor
@@ -4,7 +4,8 @@ math.parser math.private namespaces namespaces.private parser
 sequences strings vectors words quotations effects tools.test
 continuations generic.standard sorting assocs definitions
 prettyprint io inspector tuples classes.union classes.predicate
-debugger threads.private io.streams.string combinators.private ;
+debugger threads.private io.streams.string io.timeouts
+combinators.private ;
 IN: temporary
 
 { 0 2 } [ 2 "Hello" ] must-infer-as
diff --git a/core/io/io-docs.factor b/core/io/io-docs.factor
index 208e2a2ba7..aff2c6d099 100755
--- a/core/io/io-docs.factor
+++ b/core/io/io-docs.factor
@@ -21,9 +21,7 @@ $nl
 { $subsection make-span-stream }
 { $subsection make-block-stream }
 { $subsection make-cell-stream }
-{ $subsection stream-write-table }
-"Optional word for network streams:"
-{ $subsection set-timeout } ;
+{ $subsection stream-write-table } ;
 
 ARTICLE: "stdio" "The default stream"
 "Various words take an implicit stream parameter from a variable to reduce stack shuffling."
@@ -73,11 +71,6 @@ ARTICLE: "streams" "Streams"
 
 ABOUT: "streams"
 
-HELP: set-timeout
-{ $values { "n" "an integer" } { "stream" "a stream" } }
-{ $contract "Sets a timeout, in milliseconds, for input and output operations on the stream. If a read or a write is initiated and no activity is seen before the timeout expires, an error will be thrown to the caller of the operation being performed." }
-{ $notes "Whether or not the stream is closed when the error is thrown is implementation-specific, and user code should take care to close the stream on all error conditions in any case." } ;
-
 HELP: stream-readln
 { $values { "stream" "an input stream" } { "str" string } }
 { $contract "Reads a line of input from the stream. Outputs " { $link f } " on stream exhaustion." }
diff --git a/core/io/io.factor b/core/io/io.factor
index e0c890c0e3..2d927d088a 100755
--- a/core/io/io.factor
+++ b/core/io/io.factor
@@ -4,7 +4,6 @@ USING: hashtables generic kernel math namespaces sequences strings
     continuations assocs io.styles sbufs ;
 IN: io
 
-GENERIC: set-timeout ( n stream -- )
 GENERIC: stream-readln ( stream -- str )
 GENERIC: stream-read1 ( stream -- ch/f )
 GENERIC: stream-read ( n stream -- str/f )
diff --git a/core/io/streams/duplex/duplex.factor b/core/io/streams/duplex/duplex.factor
index 86660b2752..97e60b4a60 100755
--- a/core/io/streams/duplex/duplex.factor
+++ b/core/io/streams/duplex/duplex.factor
@@ -74,8 +74,3 @@ M: duplex-stream dispose
         [ dup duplex-stream-out dispose ]
         [ dup duplex-stream-in dispose ] [ ] cleanup
     ] unless drop ;
-
-M: duplex-stream set-timeout
-    2dup
-    duplex-stream-in set-timeout
-    duplex-stream-out set-timeout ;
diff --git a/extra/delegate/protocols/protocols.factor b/extra/delegate/protocols/protocols.factor
index 1121883b7c..37f3812d2d 100755
--- a/extra/delegate/protocols/protocols.factor
+++ b/extra/delegate/protocols/protocols.factor
@@ -18,7 +18,7 @@ PROTOCOL: stream-protocol
     stream-read1 stream-read stream-read-until
     stream-flush stream-write1 stream-write stream-format
     stream-nl make-span-stream make-block-stream stream-readln
-    make-cell-stream stream-write-table set-timeout ;
+    make-cell-stream stream-write-table ;
 
 PROTOCOL: definition-protocol
     where set-where forget uses redefined*
diff --git a/extra/http/client/client.factor b/extra/http/client/client.factor
index 109bf17c40..679d603708 100755
--- a/extra/http/client/client.factor
+++ b/extra/http/client/client.factor
@@ -1,8 +1,8 @@
 ! Copyright (C) 2005, 2007 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 USING: assocs http kernel math math.parser namespaces sequences
-io io.sockets io.streams.string io.files strings splitting
-continuations assocs.lib ;
+io io.sockets io.streams.string io.files io.timeouts strings
+splitting continuations assocs.lib ;
 IN: http.client
 
 : parse-host ( url -- host port )
diff --git a/extra/http/server/server.factor b/extra/http/server/server.factor
index eca2253e2a..957a82d09f 100755
--- a/extra/http/server/server.factor
+++ b/extra/http/server/server.factor
@@ -1,6 +1,6 @@
 ! Copyright (C) 2003, 2008 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: assocs kernel namespaces io strings splitting
+USING: assocs kernel namespaces io io.timeouts strings splitting
 threads http http.server.responders sequences prettyprint
 io.server logging ;
 
diff --git a/extra/io/launcher/launcher.factor b/extra/io/launcher/launcher.factor
index 4a6bbf46fb..efcecd50bc 100755
--- a/extra/io/launcher/launcher.factor
+++ b/extra/io/launcher/launcher.factor
@@ -1,8 +1,8 @@
 ! Copyright (C) 2008 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: io io.backend system kernel namespaces strings hashtables
-sequences assocs combinators vocabs.loader init threads
-continuations math ;
+USING: io io.backend io.timeouts system kernel namespaces
+strings hashtables sequences assocs combinators vocabs.loader
+init threads continuations math ;
 IN: io.launcher
 
 ! Non-blocking process exit notification facility
@@ -10,14 +10,14 @@ SYMBOL: processes
 
 [ H{ } clone processes set-global ] "io.launcher" add-init-hook
 
-TUPLE: process handle status ;
+TUPLE: process handle status killed? lapse ;
 
 HOOK: register-process io-backend ( process -- )
 
 M: object register-process drop ;
 
 : <process> ( handle -- process )
-    f process construct-boa
+    f f <lapse> process construct-boa
     V{ } clone over processes get set-at
     dup register-process ;
 
@@ -25,6 +25,8 @@ M: process equal? 2drop f ;
 
 M: process hashcode* process-handle hashcode* ;
 
+: process-running? ( process -- ? ) process-status not ;
+
 SYMBOL: +command+
 SYMBOL: +arguments+
 SYMBOL: +detached+
@@ -34,6 +36,7 @@ SYMBOL: +stdin+
 SYMBOL: +stdout+
 SYMBOL: +stderr+
 SYMBOL: +closed+
+SYMBOL: +timeout+
 
 SYMBOL: +prepend-environment+
 SYMBOL: +replace-environment+
@@ -72,13 +75,17 @@ M: assoc >descriptor >hashtable ;
 HOOK: run-process* io-backend ( desc -- handle )
 
 : wait-for-process ( process -- status )
-    dup process-handle [
-        dup [ processes get at push stop ] curry callcc0
-    ] when process-status ;
+    [
+        dup process-handle
+        [ dup [ processes get at push stop ] curry callcc0 ] when
+        dup process-killed?
+        [ "Process was killed" throw ] [ process-status ] if
+    ] with-timeout ;
 
 : run-process ( desc -- process )
     >descriptor
     dup run-process*
+    +timeout+ pick at [ over set-timeout ] when*
     +detached+ rot at [ dup wait-for-process drop ] unless ;
 
 : run-detached ( desc -- process )
@@ -96,8 +103,11 @@ TUPLE: process-failed code ;
 HOOK: kill-process* io-backend ( handle -- )
 
 : kill-process ( process -- )
+    t over set-process-killed?
     process-handle [ kill-process* ] when* ;
 
+M: process timed-out kill-process ;
+
 HOOK: process-stream* io-backend ( desc -- stream process )
 
 TUPLE: process-stream process ;
diff --git a/extra/io/nonblocking/nonblocking-docs.factor b/extra/io/nonblocking/nonblocking-docs.factor
index af73a47030..d8d2cf5479 100755
--- a/extra/io/nonblocking/nonblocking-docs.factor
+++ b/extra/io/nonblocking/nonblocking-docs.factor
@@ -38,8 +38,6 @@ $nl
 { $list
     { { $link port-handle } " - a native handle identifying the underlying native resource used by the port" }
     { { $link port-error } " - the most recent I/O error, if any. This error is thrown to the waiting thread when " { $link pending-error } " is called by stream operations" }
-    { { $link port-timeout } " - a timeout, specifying the maximum length of time, in milliseconds, for which input operations can block before throwing an error. A value of 0 denotes no timeout is desired." }
-    { { $link port-cutoff } " - the time when the current timeout expires; if no input data arrives before this time, an error is thrown" }
     { { $link port-type } " - a symbol identifying the port's intended purpose" }
     { { $link port-eof? } " - a flag indicating if the port has reached the end of file while reading" }
 } } ;
diff --git a/extra/io/nonblocking/nonblocking.factor b/extra/io/nonblocking/nonblocking.factor
index 5dbd3d1490..4d8634bde9 100755
--- a/extra/io/nonblocking/nonblocking.factor
+++ b/extra/io/nonblocking/nonblocking.factor
@@ -1,10 +1,10 @@
 ! Copyright (C) 2005, 2008 Slava Pestov, Doug Coleman
 ! See http://factorcode.org/license.txt for BSD license.
 IN: io.nonblocking
-USING: math kernel io sequences io.buffers generic sbufs system
-io.streams.lines io.streams.plain io.streams.duplex io.backend
-continuations debugger classes byte-arrays namespaces splitting
-dlists assocs ;
+USING: math kernel io sequences io.buffers io.timeouts generic
+sbufs system io.streams.lines io.streams.plain io.streams.duplex
+io.backend continuations debugger classes byte-arrays namespaces
+splitting dlists assocs ;
 
 SYMBOL: default-buffer-size
 64 1024 * default-buffer-size set-global
@@ -13,9 +13,12 @@ SYMBOL: default-buffer-size
 TUPLE: port
 handle
 error
-timeout-entry timeout cutoff
+lapse
 type eof? ;
 
+! Ports support the lapse protocol
+M: port lapse port-lapse ;
+
 SYMBOL: closed
 
 PREDICATE: port input-port port-type input-port eq? ;
@@ -26,12 +29,11 @@ GENERIC: close-handle ( handle -- )
 
 : <port> ( handle buffer type -- port )
     pick init-handle
-    0 0 {
+    <lapse> {
         set-port-handle
         set-delegate
         set-port-type
-        set-port-timeout
-        set-port-cutoff
+        set-port-lapse
     } port construct ;
 
 : <buffered-port> ( handle type -- port )
@@ -48,50 +50,14 @@ GENERIC: close-handle ( handle -- )
     [ >r <reader> r> <duplex-stream> ] [ ] [ dispose ]
     cleanup ;
 
-: timeout? ( port -- ? )
-    port-cutoff dup zero? not swap millis < and ;
-
 : pending-error ( port -- )
     dup port-error f rot set-port-error [ throw ] when* ;
 
-SYMBOL: timeout-queue
-
-timeout-queue global [ [ <dlist> ] unless* ] change-at
-
-: unqueue-timeout ( port -- )
-    port-timeout-entry [
-        timeout-queue get-global swap delete-node
-    ] when* ;
-
-: queue-timeout ( port -- )
-    dup timeout-queue get-global push-front*
-    swap set-port-timeout-entry ;
-
 HOOK: cancel-io io-backend ( port -- )
 
 M: object cancel-io drop ;
 
-: expire-timeouts ( -- )
-    timeout-queue get-global dup dlist-empty? [ drop ] [
-        dup peek-back timeout?
-        [ pop-back cancel-io expire-timeouts ] [ drop ] if
-    ] if ;
-
-: begin-timeout ( port -- )
-    dup port-timeout dup zero? [
-        2drop
-    ] [
-        millis + over set-port-cutoff
-        dup unqueue-timeout queue-timeout
-    ] if ;
-
-: end-timeout ( port -- )
-    unqueue-timeout ;
-
-: with-port-timeout ( port quot -- )
-    over begin-timeout keep end-timeout ; inline
-
-M: port set-timeout set-port-timeout ;
+M: port timed-out cancel-io ;
 
 GENERIC: (wait-to-read) ( port -- )
 
diff --git a/extra/io/streams/null/null.factor b/extra/io/streams/null/null.factor
index f76b0cbce3..d747fa0a29 100755
--- a/extra/io/streams/null/null.factor
+++ b/extra/io/streams/null/null.factor
@@ -1,12 +1,12 @@
 ! Copyright (C) 2007 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
 IN: io.streams.null
-USING: kernel io continuations ;
+USING: kernel io io.timeouts continuations ;
 
 TUPLE: null-stream ;
 
 M: null-stream dispose drop ;
-M: null-stream set-timeout 2drop ;
+M: null-stream set-timeout drop ;
 M: null-stream stream-readln drop f ;
 M: null-stream stream-read1 drop f ;
 M: null-stream stream-read-until 2drop f f ;
diff --git a/extra/io/timeouts/timeouts.factor b/extra/io/timeouts/timeouts.factor
new file mode 100755
index 0000000000..67bc3a4783
--- /dev/null
+++ b/extra/io/timeouts/timeouts.factor
@@ -0,0 +1,67 @@
+! Copyright (C) 2008 Slava Pestov, Doug Coleman
+! See http://factorcode.org/license.txt for BSD license.
+USING: kernel math system dlists namespaces assocs init threads
+io.streams.duplex ;
+IN: io.timeouts
+
+TUPLE: lapse entry timeout cutoff ;
+
+: <lapse> f 0 0 \ lapse construct-boa ;
+
+GENERIC: lapse ( obj -- lapse )
+GENERIC: set-timeout ( ms obj -- )
+
+M: object set-timeout lapse set-lapse-timeout ;
+
+M: duplex-stream set-timeout
+    2dup
+    duplex-stream-in set-timeout
+    duplex-stream-out set-timeout ;
+
+: timeout ( obj -- ms ) lapse lapse-timeout ;
+: entry ( obj -- dlist-node ) lapse lapse-entry ;
+: set-entry ( dlist-node -- obj ) lapse set-lapse-entry ;
+: cutoff ( obj -- ms ) lapse lapse-cutoff ;
+: set-cutoff ( ms obj -- ) lapse set-lapse-cutoff ;
+
+SYMBOL: timeout-queue
+
+: timeout? ( lapse -- ? )
+    cutoff dup zero? not swap millis < and ;
+
+timeout-queue global [ [ <dlist> ] unless* ] change-at
+
+: unqueue-timeout ( obj -- )
+    entry [
+        timeout-queue get-global swap delete-node
+    ] when* ;
+
+: queue-timeout ( obj -- )
+    dup timeout-queue get-global push-front*
+    swap set-entry ;
+
+GENERIC: timed-out ( obj -- )
+
+M: object timed-out drop ;
+
+: expire-timeouts ( -- )
+    timeout-queue get-global dup dlist-empty? [ drop ] [
+        dup peek-back timeout?
+        [ pop-back timed-out expire-timeouts ] [ drop ] if
+    ] if ;
+
+: begin-timeout ( obj -- )
+    dup timeout dup zero? [
+        2drop
+    ] [
+        millis + over set-cutoff
+        dup unqueue-timeout queue-timeout
+    ] if ;
+
+: with-timeout ( obj quot -- )
+    over begin-timeout keep unqueue-timeout ; inline
+
+: expiry-thread ( -- )
+    expire-timeouts 5000 sleep expire-timeouts ;
+
+[ expiry-thread ] "io.timeouts" add-init-hook
diff --git a/extra/io/unix/backend/backend.factor b/extra/io/unix/backend/backend.factor
index 7112c48551..1547ecec65 100755
--- a/extra/io/unix/backend/backend.factor
+++ b/extra/io/unix/backend/backend.factor
@@ -61,7 +61,7 @@ M: mx register-io-task ( task mx -- )
     mx get-global register-io-task stop ;
 
 : with-port-continuation ( port quot -- port )
-    [ callcc0 ] curry with-port-timeout ; inline
+    [ callcc0 ] curry with-timeout ; inline
 
 M: mx unregister-io-task ( task mx -- )
     fd/container delete-at drop ;
@@ -178,7 +178,7 @@ M: port port-flush ( port -- )
     dup buffer-empty? [ drop ] [ (wait-to-write) ] if ;
 
 M: unix-io io-multiplex ( ms -- )
-    expire-timeouts mx get-global wait-for-events ;
+    mx get-global wait-for-events ;
 
 M: unix-io init-stdio ( -- )
     0 1 handle>duplex-stream io:stdio set-global
diff --git a/extra/io/windows/ce/sockets/sockets.factor b/extra/io/windows/ce/sockets/sockets.factor
index 9114dceb75..e9ca6220af 100755
--- a/extra/io/windows/ce/sockets/sockets.factor
+++ b/extra/io/windows/ce/sockets/sockets.factor
@@ -55,7 +55,7 @@ M: windows-ce-io accept ( server -- client )
             ] keep
         ] keep server-port-addr parse-sockaddr swap
         <win32-socket> dup handle>duplex-stream <client-stream>
-    ] with-port-timeout ;
+    ] with-timeout ;
 
 M: windows-ce-io <datagram> ( addrspec -- datagram )
     [
diff --git a/extra/io/windows/nt/backend/backend.factor b/extra/io/windows/nt/backend/backend.factor
index 760bcec457..597bc99be2 100755
--- a/extra/io/windows/nt/backend/backend.factor
+++ b/extra/io/windows/nt/backend/backend.factor
@@ -91,7 +91,7 @@ M: windows-nt-io cancel-io
     port-handle win32-file-handle CancelIo drop ;
 
 M: windows-nt-io io-multiplex ( ms -- )
-    expire-timeouts drain-overlapped ;
+    drain-overlapped ;
 
 M: windows-nt-io init-io ( -- )
     <master-completion-port> master-completion-port set-global
diff --git a/extra/io/windows/nt/files/files.factor b/extra/io/windows/nt/files/files.factor
index a1c331816c..ecc989530e 100755
--- a/extra/io/windows/nt/files/files.factor
+++ b/extra/io/windows/nt/files/files.factor
@@ -1,8 +1,8 @@
 USING: continuations destructors io.buffers io.files io.backend
-io.nonblocking io.windows io.windows.nt.backend kernel libc math
-threads windows windows.kernel32 alien.c-types alien.arrays
-sequences combinators combinators.lib sequences.lib ascii
-splitting alien strings ;
+io.timeouts io.nonblocking io.windows io.windows.nt.backend
+kernel libc math threads windows windows.kernel32 alien.c-types
+alien.arrays sequences combinators combinators.lib sequences.lib
+ascii splitting alien strings ;
 IN: io.windows.nt.files
 
 M: windows-nt-io cwd
@@ -98,7 +98,7 @@ M: windows-nt-io FileArgs-overlapped ( port -- overlapped )
     ] if ;
 
 : flush-output ( port -- )
-    [ [ (flush-output) ] with-port-timeout ] with-destructors ;
+    [ [ (flush-output) ] with-timeout ] with-destructors ;
 
 M: port port-flush
     dup buffer-empty? [ dup flush-output ] unless drop ;
@@ -122,4 +122,4 @@ M: port port-flush
     ] [ 2drop ] if ;
 
 M: input-port (wait-to-read) ( port -- )
-    [ [ ((wait-to-read)) ] with-port-timeout ] with-destructors ;
+    [ [ ((wait-to-read)) ] with-timeout ] with-destructors ;
diff --git a/extra/io/windows/nt/monitors/monitors.factor b/extra/io/windows/nt/monitors/monitors.factor
index a593e829fe..a7a1e2f485 100755
--- a/extra/io/windows/nt/monitors/monitors.factor
+++ b/extra/io/windows/nt/monitors/monitors.factor
@@ -3,8 +3,9 @@
 USING: alien.c-types destructors io.windows
 io.windows.nt.backend kernel math windows windows.kernel32
 windows.types libc assocs alien namespaces continuations
-io.monitors io.monitors.private io.nonblocking io.buffers io.files
-io sequences hashtables sorting arrays combinators ;
+io.monitors io.monitors.private io.nonblocking io.buffers
+io.files io.timeouts io sequences hashtables sorting arrays
+combinators ;
 IN: io.windows.nt.monitors
 
 : open-directory ( path -- handle )
@@ -52,7 +53,7 @@ M: windows-nt-io <monitor> ( path recursive? -- monitor )
             swap [ save-callback ] 2keep
             dup check-monitor ! we may have closed it...
             get-overlapped-result
-        ] with-port-timeout
+        ] with-timeout
     ] with-destructors ;
 
 : parse-action ( action -- changed )
diff --git a/extra/io/windows/nt/sockets/sockets.factor b/extra/io/windows/nt/sockets/sockets.factor
index 77249df9f1..eef7476dd5 100755
--- a/extra/io/windows/nt/sockets/sockets.factor
+++ b/extra/io/windows/nt/sockets/sockets.factor
@@ -1,6 +1,6 @@
 USING: alien alien.accessors alien.c-types byte-arrays
-continuations destructors io.nonblocking io io.sockets
-io.sockets.impl namespaces io.streams.duplex io.windows
+continuations destructors io.nonblocking io.timeouts io.sockets
+io.sockets.impl io namespaces io.streams.duplex io.windows
 io.windows.nt.backend windows.winsock kernel libc math sequences
 threads tuples.lib ;
 IN: io.windows.nt.sockets
@@ -139,7 +139,7 @@ M: windows-nt-io accept ( server -- client )
             AcceptEx-args-port pending-error
             dup duplex-stream-in pending-error
             dup duplex-stream-out pending-error
-        ] with-port-timeout
+        ] with-timeout
     ] with-destructors ;
 
 M: windows-nt-io <server> ( addrspec -- server )
diff --git a/extra/smtp/server/server.factor b/extra/smtp/server/server.factor
old mode 100644
new mode 100755
index 2cfc1e65e4..275deee994
--- a/extra/smtp/server/server.factor
+++ b/extra/smtp/server/server.factor
@@ -27,8 +27,8 @@
 ! bye
 ! Connection closed by foreign host.
 
-USING: combinators kernel prettyprint io io.server sequences
-namespaces io.sockets continuations ;
+USING: combinators kernel prettyprint io io.timeouts io.server
+sequences namespaces io.sockets continuations ;
 
 SYMBOL: data-mode
 
diff --git a/extra/smtp/smtp.factor b/extra/smtp/smtp.factor
index 211fbbcabd..27aac1202e 100755
--- a/extra/smtp/smtp.factor
+++ b/extra/smtp/smtp.factor
@@ -1,8 +1,9 @@
-! Copyright (C) 2007, 2008 Elie CHAFTARI, Dirk Vleugels, Slava Pestov.
+! Copyright (C) 2007, 2008 Elie CHAFTARI, Dirk Vleugels,
+! Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: namespaces io kernel logging io.sockets sequences
-combinators sequences.lib splitting assocs strings math.parser
-random system calendar ;
+USING: namespaces io io.timeouts kernel logging io.sockets
+sequences combinators sequences.lib splitting assocs strings
+math.parser random system calendar ;
 
 IN: smtp