grthtrhthjhtyjytjytkergtrhtrjytjerhrfh4:24 29/09/2026ࡱ>   @n?" dd@  @@`` q7    7%  .      "$&. 2 0 3 !4#%'/156(),-*+?$$b$:@X\&#NZ  0AAp@Ng*@ʚ;62ʚ;g4ddddnppp@ <4d(  F/ 0|DArial00wb IW@\P^\!DTimes00wb IW@\P^\! DCourier Newb IW@\P^\!0DWingdingswb IW@\P^\!@D-3 00000wb IW@\P^\! ` .n:@X\&#NZ PNG  IHDR0X pHYs  tIME ; xޥr IDATxY$u&x{{DR+ A,$HD#EQܴ)Q⦑4y~鶑iآ( ̈p{Y6&,2ܿ8^^^^^^/" " }7,,B9K.B)jf;@ćP0P86gfsv]cDaB9%aF$GEp1s#9Tlǩvp\jMkmfuU[VaEۇT&lg>Խ[g; P`>:sL`r&bwgq%q^zv U@"Nyjkg@Vnǥ+j{7^#]>BfJe89o{c>s4 @6O׉U"TH$2 @5 8Q.\=™m2ۓ@n-[K/?{xuyr>d%P|^K/={ۛbryy8!]]/w@Ԉ~YvMI~8 0<ܣa䜘9":s@!3:f>t1;zѣz8Z]>m'_x>z&wpy٦x5͵6m{DRZO($p"s@ 73@ff UC"Dt4"ȹ0zp &&7(*_˷駗8"imo}3~c<̭r%z}׶,Wt5/8qfAе#{vL"ƌ Dj DhnJ)B!C:: 2ys}o?x[ǫjWXȒo?s‹3Oآ9b@u=Ц8Oe].̙#@U{WUED3`CD@`DDf" I3@3E0{DZGDD$"ps@`~G${WϽ=qk`$wVK]-=|hnDDD4L{"23 FĎ"b*"H#2,)3Vt}M" DD nf "@.AO?C`T9}/~KoosN\ ֙o}qJ),23C@!ݕ7ՎnH$(1!2 Ï?~uz%>/Oϟ~o?[wvfrfuUr|w_,󬪺V* @0P%Ƙݯ!kacB 4,R2SB@DB@wGrfffBdX_J]{k#"D"E @!@ 5)oDDi(H<ǯӿ7_*s/ʧ>kg(LmDBL"0prqqǗU+P[["ufѨn>zI݈x̄=Fj 2AZF8sp""A"[E ;eǟ=ڿ_fV3}<1rŏ_^͞B"#&SD`LWpu4ϵNIUSg&ICH d!у@< #Y I ACu%h\*>$&ʪn9K8{wp뙉!=!FwNo=}?|w;?+σRn'l>#` /׿ 55T{2_\?|Σ}cQ.7}_ϾrfM|:oO|{7nGeͭv3wPծZ;(H11JݭkwsB $2$90&DI'I( lܔjT\&պ$轻{ 2"Si34l< Sٲ̽͸H:?xt:*o7ӳOБoe7슅۳>[#m?k쪧x~zQTq狇 fDHH֙ q%Q@ĈBA,fXY:̂S{yxxXW7uH"E#3D903cɉ7CPr PU p C`⒓ZÀL-;}x~܇ٿS`!3}GHxyqξy򅏽̽[eY4jTU##"#Hק DHDDD()%b`X0 , 憀9e"333{@DfFL ɜ2p8R03a0%InH%ᄀ)\;Yb%hnfxwOܽvy4`qx7o}d;yCFO< /<{ |Zһ>xoܿ:x]Ý3'Bpu pJN)9pͣBEIBbrֺ ! 9)!103EP qp%И, 'Ffʂ) Ly|*D|"|ӟ~` RV?Jۓ~o+/31AxjP06_]]^<8C]i(wǮnDXRJ6W؄{U񈕂 "fD"p$$$!`X]_9sʉMw $Uv&U5w@DADK"R21v5$L9Rzw r$dfN+P 3$1 2>=s9Qz8W;-*"iW!R]puuj^wu S̜E&zT"DJ)3H9%0qa^kKUYWu@wg B "LYZp , A䒶m.V'p`!D9ϽLzqyt?>"<_~[_ē#X3 sj?L44<-LH DBD93ZD"@\fGD|#GDdJ>,< YsERn6ϭEW e )"3'f`a9LDR%޺9v"`&r]6V1l!"Vl!KLdn+i’R3W7DU[ԖiV!l6 `H%GDh ( sݴg_Þ}S;{ ,tO|g?qbJ.Rlܝ"tX4/.//sνik0YD2 d$sUPnT7"ADlP$ٌcJٌ8Y_u(эp(i:a꭛vRӕB, Nb<-"!3qD czSU7Ufq@r4aH$,zmʡ8Cxt{}7pխXg|/Wn)ֶRّ0`H. jΗԦ„u@p)eSƕt6"W3:P@pَ)')CmfS%Ąj4󴴮lfH,Dی5:# B!`FHbPuG]LanHLĪzw=XD]0X6UWscbHXV}3@ʔR (>ҋտgg:_/gn( aG7>u$[20/|zñ91P]eiNHd0yV7 O%5fja`!9m6n%vۓR0l}ͫ $./5n"eܨY1p8 A$?N@jkha+{w5ƃ"T:W't)eZ&7Du݈u,pF&`̹ `mK29~􉏿9;of{"Nyw?od3 x<P4ei|upq޻*F!@šGJx$ڃx܍CN B"vWS`$8A0p@dvwH%^;=Y$XҺ##8uu¯=#,  f!`N)cÁܬŪ$dA7zQpWOk_|r[F8R5NnY7b3UL_l[2$B_.ڻm7cWuDR 5S3bRS3 @ĻIz4 XXM{$2KmBy(1P@s\23jG"$$uH wW3` 2 57uyZhjfaq n[fP֜b @3ϥ0 C0C!#x]7pSo\N~/Xg;?W9<="b=]zmADAh)ӳP0-˴.j譵Y$spbp7\M)EvMN%ao6O-S4Hytu EBY!9p.EKN)DZ{8fF9lí[wD᪮Q[0-Ńqǰ$J1KڎIs"3B̩ v7 B]Z̐(XRJ%Ex{u@īk%zMf2@@F `ֻzEn4#z# ݛ;~♟ӻoAXӟwO?u6#ǁVͬL$<ZsiJYK "i5?13"Cɛ!1;"&e\n޺= eSM(׹.sWmM~u8εj*Gx;ڈhlXDyѮ)Vt?_~v$)f%ڑ(zޭ{7BJB`r_]KO󲴥U.C]_y0BX 'pw1'tɌm:y0е/˲fLwU$s<KޞM"NCNICxjp5mBԛ"nī"da~DE2EtͬkWTiO M5K=3"<"INoymo_ XD_z@0nv[֖eRZSS tZqJ].{%I)91aX!,[X Iy4 q:yZe鶴ĭ7#PH%mvdmO0p](z[u^Rrj!*-#VsNo}ݥvw@Ufd@TnixvSkSJfK=z1CG͟!%v61Et5s@ òD`xwG`&5lγ'sFCJͮRJۓ8 {D၀jf80zצqk2{0*2+ :c910 q3EJRzm" IDATXy48n7)˺O,RDnM2AМ9|=K:iyp[naxCNRYb:pgZҪ 3je_ap,v BW]Z$D^ $PpJBĔ!4k)s&)#8 6"0$nY9' FPZ7bsdDSLDCVOo(̉@c&Bw'NDeM ,94119JZ LnA$faeXHœNݽԛFv ,t~/{/9My>χ fjw$}i]) rNsa-Jn$4<3%Y&bs[9d"pwdYd}f6#<bP f,nQXT͈0DL@KwE$Jar̫SpJLk| @NLE " YX)eN (Bٞ3+B7'J~`!i@JNBL'gO}jyZD`?wffS 5NeCIK=^N#~gZ /~ €]T:&w3ޕ$K*D7XJ_fjAE) mY}xqXuzbFARJy-Ih} Ă) 12k=H%UUB ˪ծ$I9d\sk`N!c\Za?9Yvjm@{[Zǜ$ƜxaJ$DAI)֓)Q ք^7"&َfi0zɖ8Hn]Uz!$I%,$$9ɍ;'?䩗?Oݽ.a t5v3b`V)msR{ǔK.9e1;.e0S7'BD@$Z89g꭫"d<;ۥ`kJk'ı植cZjRuO0 3y @$92 aMU{ jfږx唺vw5X0q[B=, R,&Uʞ*1Hy6[S-s)s6f([prH\L6ُkoqsSVՎL)'I ֔ u{SsGߝ9%f,`}sjaJ9HbI,"ER)9Dzq~>`Q_—~/)hkhj9qh{˒o]#>̬ g3& !?@?6 X-HWs|,9˲,Z9V@Ra) x w@@fӢH$<4$qhQ^͢K˵ .ZA8YZkzQԥR9TPeQXo~Wc/Dooǒh}=3! *udYxyhgd~?vߏhO0Z|w_ \`,`f̢z>~/O>c ~y™,3‚s2RTZ2`'i[^b!2Zo=$DKY.af}XwR3eF 9Zu]Z YK f KX@p>__QD^N,6:CG$fQ9Ły#̘pp9gI?HYEj) l1)ZH EBE6%"_.,ķo1#0Q2û@ZTdnl{lld~nc_!,br<}'U#)"WjΉ׀HL: sO@ ̂8)(":" >DU.3e&b-3`A„B ,\ʊb9LEt:_F/o P|7z09F.*ᑨ,Zʲk ޺!c<ɂկ* dU&H"PT&Fbe~zi`˲} aB0(&Tx6`xgHpߚаlDrLÜX@pHk$6=2q3. "01,HFy&AfKbVEzٷ"zZ<.K9DY Gk y`$ "'{?zKYa|?T8p=K .e&€"YkmALZ4!Q1݌ `XOxPRs";"Ry:-hH4,I۽oeXD%7o{`hef2w8 '?˿ bZh{@d+#겜N'~ɱo}"'39s}TfRLGW]1vHr#  =}k231,25(!2"QϑCRkD1aͭRu=өE_[R_A)˂OoRkzF+sIWd@Htp̺eY/2}eɷ[~mPL 3đ+n{i8F ]Q`)zLIK0~?z{Շݺ?  Ӛm)foRֲͥm۰@.SPka"Z0Jezɛ?w&"絞J]u1pfQQF֚Jmӹ+N O"L,nD k{4s E4GD42-RDOӺ.Ȕ !9{U\ G߶ 1#e `"\"3'fBGYs2OI03 C3e2 eZKFp~__4dOk?uaHL drC~߷) cx ìn}ЈR=2<͆ ^o>=>=˾>zk[n:0TT= !68A ʹ-.uY2yXz93~8z)^<#"12Tѕ<^qz%`:2`)30SHS-"%3TpZ 9<^1gJ*|u؎ 0뙰Z}e.Ky30 K(O?/??g0fLGV6k9=dm7DTsێmo=)g>^d~`7_|h龜l뺔RJo拷vY=fn$@|: )J0=܉@JXEq#Ya# h;Z}'~,*AoS"r_֊2íaGDLpLS8(N07D 80I)><1"[޷AiE*M ؠpQ{?џ/ҥ7ΧoIc(hzALi{גB}kH\L}Z@D &RuՔ\Tz>@u? "#ӠR3Ta-{{OQ$NPUABB)"c"}_^^2 e?8zim RxYtY*"2Rx#&$H RpwָNYLI4lQ!# ` !dj+m$xd~[o_~璇0<FÌGo61#(0[6GS] (KM0ԅUض)E8ckǺ.GNG@<3rNo_2ڼ#2. H9pa9ƨ 콥{^L%f|`[y\k9]Q[YCD Q80i!HE2EPIKq0A#DQ7"dE4 K-r~0"GfRk(3!Hp$aw,LSzc ׿5zxR[l"٘"ctn޿ BnctZL@!R>_Z ,裏2ERu]>=>N+ [鯉zZPTz:RʲZDH@n6T%mѠ3prM4Dlg7gEZ.C&r&Zj]5=ȉDPTX I"#k\%N\ry>~c1Z;sMD0{C0@`z.#GoBH#,!ɇ?k_N,9_s05qt --},0yKe xju]EmG0FƬ,VVfZ֚ ih!]T03 $$R"xf!1nn 3fƬn%.*2f uy'gL!"c7!~xVyk{[cQi-U!^ZO ZTV"pn*REkGȵ>܈қE')i] A@x"an_#= 'jF{[ DUϗK&Hn $ x]Uܧ{m> (LILYTvևarZtI CFxBfя}p93Dza)ޏ #[<}/o]Xɯ|O A}^v4 038Kݗ뛢|@nr^ͬ #r>/cO{doMRf}ݣ{;8s1eb80Rd]T LRcHp#}"*_k lo; =<<~SfN)+2^3p]VoJo.iwF| -K}x23GYD1Mф$D* e2zij$QYzZ,K?<TJxpzfZ r=R|oByY#3e)dv*4lXۭE"Z"13K f7#_zDQJZʌywSTS;X"d_1#ܦ'{o"ʅ3osI 2ͯ|JaݺgBp u]2 Md $Eog P-VfEŽ-PUqoR\D*JH+}YW"H'ea{ZR6a}v ќwψGr^G7`EF/Rh0#b0,I/p.ꊌL""HPfљ Y#Y0CP&S8f0Y%"):ɗVٻc B3q?xf c"7O@Df4N>|W +>6FK*9I k3Lc "j ˲0s\˚f"3ͶZJ qusYRU+Ø߿"!}:54XZO'w[!0w256|; ԥ̅R+6] 2}62! iZ}RǾ{G,Z5e* _ b)!mĒjDwDHa^[zD  N&y33E91ˇ㗟igo8e #8J\kEi>SYyQSA,Za\J rXN{F)\WֺOe%[sǧǶ~?;88V>D@X|/[mt -+#1"#D!3HwU=HEe~ILJv~XD$8@6*3U!ZYFw)zT$XXю8MH"22`>\LjcJEN'"JGOlG"f,j~m,ѣ>.s5B]>Z~?XOLO>zZ ZOBf"rK4 H4lN"Y"sL(P)ƈяv}om .7Er5RU|9 ̉L`=h@8_N@Y۶Y$!-""DBbdA@B920gjfՑiG;hAPj$ JJ "$A @r%Rf1tyPe)/J/MR;Y}7 r˺i"I)u9m{ы.{(U>{eE$pHOrZ?zV<} 64fBov%#G;@]jEfHBb=,gvC f9z5fĜ 5"R6v73D !D|E&>8-=} bZ 6|Ǿo6#E$e)r>=i{Zk,uFDiY ˘4}ԡiI9Nuo='Y#Fz0+b Tycth e Dt> *Eeaf1DL:s [ ,PJRQixH'U}c3w`]JoNOqa پo6ZJh^{6>c}zX7R9yZhaD$" "kwyȆ P*-K}l[h(Y><<=>|޾p#"3Y *R͛7FҾ~ذHCbc/މRXdJU::FJ `q4`z nVR GTJE)"~?2 뺪 URi(O3fd8h*hTb !]Z?UXzǡ0g 3a x& ;j|Û/?c~B||˕kށ@BZD ADZBO! j!H~Z2ݷcJ),Z>3ֻ`CaJ}tDH܊vc$.Oo߈zcߎc{DEZOz:j]^U Df1P23֞?|RtRS.Z4 aY;WDL-@ 1m7bzXp߷ "$eDZ6ɕ5׺LDa)RqG MA%^ץۇHjm 5]n#4DP$! nv9}\XLϞ֒61:'RYaޏs" DB4+@rg=_m;pus2><щrv؎9-ݑqߎ(Z5*ldo C|}Mm)|^ÅX}t"ILZDLp~{o=<.gaRt:]2ݙ"|]0DP032F7 Rd"°b 6Djnu!& bX8vl$)?sxoa7ƨU=\er|v? 2[km>leZnᔰ@~h}oRXӧ-c? 3!yx)(!&"UZ 0J {UJaB^NLdnct62{Eb#i@mHzmsO8̇@  [K3Zf,XhlGH8?Rd=j]۶owa\".$*z>UC FR#LD X#%|l*Assc8c Id؟.DZ)oE,T"4FyDk1yI `CQR$&K(!}-)ž]_|D[1eآgn>"j9ZuYXu"V\DYohBiQ<Ç$nic1Otw?{3Pqxxy] ` "2 dpfGs+GzDz#@d:72\^˘,UCEd=]:Eohh\=8_jEGovZ`ed;&oYG1ZǁcrK},瓪>D%o|z|{#,-s. $#KeaNc8hRDL $02)Z2*Z[TUqÇ[ocR7LyYfz "2t萢XJ99$ EL,U"'huYY"[t3Zu,Wmzۙ o`(tּdє382,E=Fb +vxgn[~aZ qJ6"_QK}DpD ɂ@̷ ezbO^^Y"0zZx[ksLQE2SmXOEU0b# f!n\I]ǘf$!a"$|e~mL)J"R* [0bmˆ4uj'"2c}c?l桅qcf&"izM(c p}@ -UM,ƒ^pf{HD.v fG%ؙϖ/XO>0LL} PΤ\Ph hh)‘Hl-u%8Yt}z|?EÚEN_6<`=>}c+ZֲDHu]k-rY-EU_Cu&7ό}60eq4ѭ=P̿0`V&Rzw{q5Ù'SgNV#boLnV͛Tu:m1fSH8@Œ ? #5l^wc/ޥY%[y9@6Y4)2M6ɮ* ̈p H$'+y=boo 1n[۫XGD02Zk49'$;cduΈKڽm\cϏu;_~!`J!9m3D麎uY9'S-_c>88}IY138PF{k2=gMw"zy $ ?X۶nEf f"Vz>g~o+ oQQ2EbzB1SYU>y*U̠Pշ7xΔ$^wVWf^׵kir*,,QU}'Q39r=:Y*W:9yLVcED57ӍAb/vfSrmhuMbW'b\b ʊ ̄\DfzFDQUU̜\Eqf&CBç/ l10#ʘ1Ds"/oIJ ,BMPbEU,DQxsZ"P[1\nd6Ӗᕮ̧gA}>$WY!q\Slg"Y˸pT@aA,fcpu^qfդy[bHQ]܂v`FW.Z'mﭿ10:ueD8JzbR/o|z?1じ,>zWV>+baLTEz((V!^i٘N&FcT (0{uMIʄW’$&iQQ~լ+o~ӯ__-2E96}c8irFH VT"~3 "fqxDFu*Z 9D3Rj1UUrFӛko7-`- D~ͯݲ&\d δ%DJKxZ9&RUI9(0m}r/"Җ|-A>:H_PZ?3")EoZy[kq>R39rߵo*"}*BĭX2.c<.)FU% 3|NEEX&+^Jd yx}5(m=dstL0F3ɦfi#+#J/bjB1Adtx<cŪU%%BҔ2W8U@3 g,WjlzT^Rf޺uœ~Ӻn*oկ>㼮Ki}oȔϟ?߶a%&QrV(UƯc*PL2| jMfӌX{&*j Is Yzcfn}nfBsvOqׯΏ!\E af&[DYu,⢅\t #<%q%D8#ܣl*)2ETX[1D+8:+YHII f0aTu߶VېD'&UEH1Qĕ%^YcH @T\9ޘww$HҦ}ڬU֙m͚pTlXy IDATZbΠ,VLjBEZ~_gT1|foVy[3a3;1zZ&c|z\WEc"1yPXw%BQUƒMG`a,mˊ,Vj].oq֑gUDAp|.O٤yW3`uS*+8ϋHTT=|6!#`UE~9m_ڞLuyQʫ02:~HeIF.)MkL5S[`zĖzV% Q $+D,AsD#1"#UwiWD7Ȍ<ӝ<~x-<:r։Tdr]\f1PI(958sE4rQ1 o}U &6Ȅ$b=bRq ɠy|Pwh#8hϭIkbTu9#jDGT VH08T9** ƙ1}E*'ɦڒVY%<_ }{$"r5ezY#C@l%^8cxy]M^'wf#VbfBDg:KrId(ڽAPDyzI|6 ڈr=*1Ix>y4Jij< qтD(E͢JUf"b0CM{ϿLUiၪ UD,{\MڬUDl Ek)1i;##L5{'Lc0+E1@=#]d=n@"}᩠k$t{~4i) 53W~WU<'mgb-bI" RA5BsN9HZu"auD`JܪDyͳ%+cmxyk&tۛ03Ed!|^@/TVai%S_^TT"9 Ă 3RR!k$e@&G*y?_2w,gʢFku#(c\Lm}!f!n<33.Lv#&jY5@USMkϟ?zfΑ1ZΘETpzD,tp$H\Vv`!@TV^ #X羑ȧ"xBh|EDTLdH:=Δ{z& )X<=KG -x~LfUq >`/aqBNdzqruU'DR,"2(Y6b!DxbQT9VY+K3 32HP6G49kDqEPfFd0ED$ ZaAr&ZMI[7Z'u]sN&*OZ!5$2ʘykΙ57c1HD.;2v~|6}=|+-@ʜ9,-2UBU~p 1MwwQb3hHʶsLg.b&,}x㝠 N[D=q<:7N mf*k?s &%x[b9Fx+b5qzPIBP(SUD^*5QLTH繚Y.0_ HFj,r1+K Pf*cYklԗQrݨ*Y VVkĜU5}1笘IL[fy~&xu߲q~\,dbak wdCRu̞kʔ%mv1Ix>M1fVHJ?`]35Nxw2%ǷqVDIyRxV?#K LMEMI5Zgb! +|J+;ϑP39 1!$ED9< OAƨ/y %Ԙ"k`7LTLPkĸXUzkF%R}"ygD`An#L)#&q*3QeLXƜuzƬk$~OV5Y@x( /,h " )dRs[̳193oҌJbwUU^d,d Wŷ(Pix||}Ϗ?b= H%a_@ȵW$&ۭ}%K[ބ4#<§m}+ y|<6|=+~\ʜBT8u5$hk"f,&̢j;.mH}֘ U~9 W$1I℀Ԕ6ICy~x|}ZgٶVΑ(ePDTѾLtmK̷}b⬈#K*mP&(GP͝71F"w32gF(z/Њ6c )ˁDWE3Q~}qxDE͙_=bk5tyB.F!Q0b#T& +XߪY1Yh Hequ/?-3 u@4@M_N_q߾Kmk^ǙIk\@NdHW*$LepeE WsfLD6b3%IoR(-$ s"Zon}nDxKM^Xs',TҒ_̈99##FfxO_:q#+1eȫ`)B2;9DUL%Li̽o?*"X3VVVmIL3ƭnQ3:}{E:SKax &"#XDzSU*J. 35L{f(Ѧz3DgU9#dogJ:@-veTskzOwNTy?3DؒruR"d1lWU d~rMU AeT SeP>OOgUs*Unܧr*˺ի,n1_cK "Y`&sVBgE*JE遗_syGV]וnf*\'9+Y۞Y"J+,moo۶'O?iۈML[Q3~qKNmyu90C8qedZـ5rpe1 $"X ,^܈ D,Rb>̀ }E Ql_U̢Vq C QM_NcY^*`"X1F}nMYc]%uNgFd5">kG:D/Qua^U#[ b{&e&= _~ (TΘ @fOoHoUU{ X;K[z\ TUJe- ںNQ"K1+|^(Ex)۾_$9]ÿ`oߦ}'JE̙BH1@Yj "b؈@%UTEJIW2+#UMsf8, 0EkoSu;_XjƸӧm1bPeT5Qkxeq= .rf*=*Q>|mlۖfYѣ`X#W#|zx| ׈mEcͬZo4Q: ֬u᷷69x0kzy>Ff|$Sa _ "Qj)CиtB~o۞˧ۯχ|Hc}{ҷϭB2T(n_~j9=)\4ē0DPr{:?q^B;oq7BUte}_1q]2#BUbZ1/ZТEU9U0_ሥWY0&Ejӫ*Ps,slJ^&DD EDx>sD3#sTIT5Τ?ED-eu[I" <1z?Us^e#*Pan <)ց"HUA+=C"QMuo&*.f/_mQU%( A*H(dRQNsuBkP0!2FĕWq>~_ގkwb7,3ڻ<χm7Z NA.*ӯQD .*9JHյ f"pLizYn]W!288@&VqMj*ZϘ^w!CMu]R֥o9s]z㒇dqfiIm$(fD=I+=>|&XHf[Wm`JIB!*TL۶ ŴإIs LoedB~_CZJ2 g(ңCOg*:8#kXs7&w=I2Q)Te> _g*B1=QIQ>9 *F̖AZ\gxֿ&+7'ۿ/KI8ݝJHhVTydQʈ~΁mmj E5#dbqqy*  6h\QTq_ 2 F"BTWU1CD2H$ң*S1/ntXbAyDH@ܲ({x$"YHk+{\Ӊ_T}M+=gU01T8\*iD*75~r5s(6cPm5,>93bTINF SŊ D—YHԲtIlL縦k߳ooT% [2/`3pGSMU jU*b/0HܧK0-̈́bdz05UD IDATscLOp׏u($"jzs_;b%- 9c1y11,D$5#FF]usN~||K̹IT/._exe="(֞j&Q?䚋b -EDU1+IT@U@5U^Yy`fD$U8NKqsxLq?ʚ7o n֙8s.B_;SanZyq*kctu]~4!DTetW =PYUgd Xd]-HGULf3H9Wa$U)U[(rX-bFVt!FkuFD)ʧ_c^cĸy|qocIr}TqmvljhZ @FM4Y\X{fvqwoӅ$Y]mdFoLS-N n` J\'u-Lr(fH!bK`D$L*3RFYo۶4ՙ궯> 7_,?gXM{_?)uݼ Mj@ B4sL*D{vaDBf4 OC4=t7"40T75BHi THmH 9OXAb2%"1N" 3TTP"X3 a.2^NԈrPj$!ka~U(!BeXr&DkƀԂnMa2G2a3r755X$H"lĉ!\%\#3XTHf"; ׌$Sܛ9/*DB,$2y0_"2!+";xPFĥA1!ƀm oD_'x( $DBs>F$4W)C\X#<gF12|lqAdbEx'@xhwSOJUq뺩d&޺U Dbw}7bUIZxnfcp3z@ eTB9dwcC)3Um:%55LIxxڧ_EO KW[`*5 9 O^"M}Q#P.n[G`!*Hyw${'`BAVC!(q"bz`  9שj/!=2r-#S?!F~ %DZoµ2'P#@强[&%b7Á PmnѴ72nŒ0ڷ<Ȝ,>=1 00F\$ENV3#\=l۶DDޛtyZyL<r2w*Lƀfe<׏gD 4'r_+6Zt3=FlPgOڞ7gzHh{T8"GO@[ojڿ'_<ǟKAkȃ~32sp&p{7H֞^IՔKo(2 xlL@"y hDDc5轧 sq A+kS ~z>'e}k )u&|s{2M(0 Oo_z|ۚkM@[/,ȼ_~OsfAqPhP7HWi<"U@ޣoCIx$j QD"B#pkOe&.Ydrdpm6ZxɄ47!$ U!G@Œ(EJmlO (Dg2s۶ku_-ں@4@"dMjM-ݝ SFӈx<d2FddoLP'tz:=>EOk23r!BtN$&"pQ7|ΗE){oˮn_?pyj-YsP0PM20cLM<C-¯#{U 3ܪHC$0 e)!#bsI&^ra&B"‰@\nlXscBik33CZeԪ"=ƔkePDL@mı@ 4LL/]&/o㋃0R,s嶇`s#I{k DPҁOO};mɬeXx``7_/~kֿ`}wջO9 "13 _Jȡ!")93"i$ٮ04U@ȼZG23F0#90frz[dkӼ,Kf0DܢCBXM0h(ã؃xg"H ,c 73L WO#ٮ@=2d=æL@a2T̈T05#R}ȈsW;i7q:~7S2 е!IFjg&L5u ;]X,ytH`ψR>Oo3W,Hg9*T2*b$S+1!dK)WW0s1S#X#J7 NTČV^R*"B12~ ND "!}^sߧ29Ȳ?pJ-wǻRZy!ioV)ĕG̝d *u{۶F7U59}x/??} ӯ/~B; ۷BH`eT[@>%a1LUH̥3fYxA", K- BaͼL aT/fjur.&BbD(TA~+0!XoAT[mЋt[;jFDt(< C.eɇÁE"t9'@prP3)yYF9!"2~WuIÁdպkJ: jDV@$&MxuýnM/KGlû`}__~o+ @jCdv5 ˠ 3aG̬"&b "iM&tXh=לq)RJ)LL'%A2SfrpF2&b&p=Ѐ3!wo" MUGz},0Ղt\yC/_-˴}-y+\ه iwĄLp&qψRrx; JLA DBKP͆Jj7w@2.P$PYnnnHa{o;H0kEg~7ZX=>O#tLB”є3#3dlhztd&Zʰ*\(ljF <ÑjԖ2`WsS5" 4G6̀$J\CN֓ L0cԝqmOWf$1M#,z _oۖ,"SfD# Z&* w/==OMpdf[.B"2 I @zLrEJB8A&W"bR TOϧGvHdjz{sn_}oIkO/ZybL187w9vO3F`pc5Hh(L ep9"{o0ױ=M_RPoDRdPdfI5|ٞcu9&0I:YvݷaMy_aRKCr2M≈<{_Ƹ?H$n8ls Xjޛ9!fջO%W,O~pSݶs&jf(jRfn{k[|_V/,}NT1|LF5mp $,S9NU4,="92wi&IezPjᒞ,L8ZL4RDDSDQ՘% 30} 5 /kkm]MUu`rL "s;??82f3Dqp4XxgDo=3Ǚ.%OqݚG*02Maob+Dps8Zes ylۺ>by7p)h#,uB3*dghR)NSbcPIa勗ǻՋ7uZyӢ[/nkxpLﵰvoL`f[xwU3WU@HfnI\VaD&&$NK w!RaĂ5p 6daJZEDXj)\BP)=MxtL@ZX( %@BfZ[}9.a @=3YKbSǰZJ YTγp' n{ US%2Wbul&FYqmQGrMC!T4uDBJ1{ŹP@0$R$ &P͵@DzorktLdl`[=[k+0/2kj-\ƭl&ba@lᙐ8ֻ!e@>>><ߌi 3,TRBM*V)20]?lfBŨ)/BƚI2&mfzn`)"Etu̫ sŁ2y-mJդˮM]{Zx4kBE(ۥQMh Q`]<K=9ߜ?t{xm.Wra@??խA JHRJb} 0qA= Ji(".WDn(ʠ졄³o9a*ٷ r#A\#?nEPZxn~U>G8HhZNk ޭ86kmy}*j/Y\U~ae~?}B W*QwUYu4HG TiA]=z,B\0#RXLSdtC 3{$'ZF_A",HD1H "̭iF/_:ۨ9* DǛL9 fg&`U|]9 IDATp`ۺ==i"b/ra|>YLȀ.PPF)\Ec=O֚ZCDs;FB(LNǵDL8jOoJwwyfZoo Ub  q WI@EZf 9*QA$upc<&ؓ"2 FDfX8sx io] 1Lf*Ⱥns+AWL`B\kr2zޞ*Rʧҕ 1ci" y\«aNIdk{x>?׶۶^w3=<F:S)3*cg^/EVf2oxs>~g_CXXۺn^ J*m`e5`@Wk6K %H@& tbdD XP\2)\ M!rf${y8XEH@I::Mw抌0 ",E +S8eRet{:=Gئ1"SPa$Ef/T*֭Nۛ[n=={kaİ" 92ށ2v:8",HH&N wMD$)uZ2ӻr hSBd23f)՜#Јedj=2|0q8 3!,9h\=3QM\{_[no޼{w>Ǐt~HPz `"6G6" L3Szs{)<yɱaU[ۻwRʼ&YM#i="Pjs V2M);}%"r7S톑,ű>=<4YJDx`#\,jj~ #/P2t7U{77ww ? "2`K2 p.F΀Hضnۥ?/~꓏O}{I8ž6E)r =LIKq@qy.$nyU0@9LR FBB{/uur".id@}H4\=`l̷x.rfz9[7c@nW/ 0( ;l[HaDkU ^ի:HH~Y׳SՋRiziP Fr?{ӏ><<)o 2ֳL*/_({9i$j5!KMD`f ,Bz cVL&/1ohDD"#(iNDbdW0"tv=#{}N2i5$nwTpBd趭6_"<{k" "g9@ |u=N@n{dQ)2Vj>*1hL q}DЁ[\ukǏW_~![P P-r3Ȅ 2)d%|Fj*2",B:LKRVd"s߷#XX`Dba{ޑƿ"mcZM۾ﭛ9a0H$N|YߛiH&Dә [۹놐,<ȏDn#0KD00|8*'{  GPµ ֬Xdp'*a!Hn?p9`mfuo?~WVmtSò/^uJHbP DV5WMB]v 75b"ZQ̺1isF31GX"32x)t{sexy!̇5W;,_p@.i?|BU `jA*5uz{:ܜ>-OmY<:~-TZzn?}{ͥ}piW$dљ!%5N懘^4bn>g\󑆪$)?dJ10k9bjz2ju ͬkmZ ×Zt yh 1g&f5W_@ߑc8u)\Ԃ禸3|u:M}[޾U5իe~Y M)3paduk3aH3zsK{"L9yi!k.HH w 3fʵD.32Ôvc1Ɗ S=*[k!":ć6]dжm>TApN1=Pb&WV#ŗ 1eL4:#Ǿ'r32[ uغ=~|L}{Ý>^?{QZ/?_ ڶ/Kr)4<ގ 02cAhxE>G" q 8.j)1'FDK)̄D!65H)g uOMho"]EO֒ 5CFF,̉)\#@$Ĝ8OS%1y91lJ%>]tbv0mԻypYv6y>_!&_~_ mt ꌔR219|CB=ܷ}{S`3X\U铉;G"9uo]'9|(= "sNԒrJ)Tz@ $74@sD^^vs#r:fhM&oDGkNy!8ĉ~6EL)%b)ĉs-))jfΔ!0ֺu{,׶{x̀j /dս/חoUo&۶zʩΧ1tU0DDlbch3+ s $IܥCFPuMD 1(Q `"˔r)3qR311L1L1Q Elo7GDJF"D{ﻃ!:#`s<W@&"M@@<]) ghS&5۸?>}x]_Tm*ۮcmO&?WniRr`faD.c GLvD_L0|ʳL)"232{PZs .9ZS.SΉ;F3~*h]z[[o 1r &7Z!Cezxx0ұ9'"J)᫽;3jxwNwehe][-}tSb F/˲~z~yǏC XǺ7:l$ZQ8P;y0er7<<!8 8!ba@.gH%s) N<4;Ý78˲G !;n[۾\qLjќ ~EꭋsJK.䜋#! i[3imr@ 4͜r.-1 P>T@$ (La҇>LqJՃԣu_SP(&dT ֵww~~/įH'Rr#źK9O(RS.dswsc@4572_82jQ.t?z"@w1B>LJrGn$ʌ2\jMUD rJ_F͗W*uT\.`s31) pUpCQ 5k`Ĕs0q."xtDĩ a ۺm7QרwGx\TJ bm(p%>,2:ה՜/KNK%TTS>]4ML4֙/rxNx>Oib<ͻ[ [e]_n޾~|_Erݚ&)s 懅"1Hst^k#Kbpp m߻ >TEEB,SrR~."4Ms tӜs9]3Oa+QRjTSOf8AνuPIR̓z B6bۺ!֟o_>|ꗡ&-=ۧ/<|sWT FI)Kyk>r1!sjADLl H `2!Sy~B`,jS!"5gumϷ1ϵgbӑ>SxJ9#Tj1|.ЕCمT5T4Wte>Bw-|,#|r?~z]_ֿWSXѷ<|z^& >FWMZ7r9TD]͕- OuB@:S)sqt?t@( #^s.H99qbf)!&vpdթui}s@l]!LBa>[{ wxYn/y}_XǶ(ݖ.g !&@A,ۑh39H(CU5/Dy\sfJ@*&omt 7U88 ."&öm7. xY͇ؾmYeٖe[;203'@PS"P}L$g^MMɧ|{| }#ulkzۮe@\ eNm[ f3 S7b Uއx@fcBZǟˤs_KÇܞo5뭜.<<76s)cY٦H)[)!E1{Os.2we̠ ]sR8 JASJTfNX*w`LrRbQZKeƈT/w9m Dsuum%bq̞009e׽9@(u+8{ID`)!2#RC,"P-v qT.f0_PuuӔmtOoOڇ [$/|͛7K4].4WxGyyN (bsS5|W!&n)hW3%Nj&MCC0|| ᡠJ}s ?~T_ nyΗ9kN8w)MuʹDȄ* PJ.SA"HJ-}[M-jʡjD10:Uo{3?<9t|0#DsZ}LR*OO|Z>=2?_VX٢pww9/SJܧ4TĜԣNSIvSJS={h9q{180 Z轫*"8f9} VwDՒ?NDL%ePN\jabQ#@\O3 *"CTrwWk8d\R "ș%#55xk,em?>}[]IDAT'|J9\Nr>RJ œkb,93333橸}P`ӌUBA-М8%S;1\\C-ֽ_[Dܿ9[޻-.򲽼g6: ;lO/*;;ｈS=]i*K=7:rJ4%ħ5SԚi@d.[Z33!'' ffધӄl!{6m(#,[p.&:z{ 7'_!ʥi* 250 ... Sender ok rcpt to: 250 ... Recipient ok data 354 Enter mail, end with "." on a line by itself Subject: World domination: instructions. Commence stage two. . 250 RAA10452 Message accepted for delivery quit 221 tecgraf.puc-rio.br closing connection"pnPZ02 6  $*$/  1$$@((+,,00)4488,   "    !Protocol abstraction status, error = smtp.send { from = "", rcpt = "", body = "Subject: World domination: instructions.\r\n\r\n" .. "Comence stage two." }dP'Cc C c C6ccc C $$                 U & LTN12 sources function ltn12.source.file(handle) return function() local chunk = handle:read(BLOCKSIZE) if not chunk then handle:close() end return chunk end end,#dFC ' Using sources status, message = smtp.send { from = "", rcpt = "", body = ltn12.source.file(io.open("/mail/body", "r")) }dP)Cc C c (CcC                 ( ,Message Format (RFC2822),! | From: Roberto Ierusalimschy To: Diego Nehab Subject: World domination: roadmap. Content-Type: multipart/mixed; boundary=part This message contains attachments --part Content-Type: text/plain Please see attached roadmap. --part Content-Type: text/html; name="roadmap.html" ... --part--0}PCC)C C CCCC  C  $C$!(C(,c,0C04C48C8SMTP dependencies  A Error checking DFunction return convention Return nil, followed by message on error;Bd*dA  EBLTN13 exceptions try = newtry(finalizer): factory; On success, try returns all arguments; On failure, throws the second argument; Calls finalizer before raising the exception. foo = protect(bar): factory; foo executes bar in a protected environment; Returns nil followed by any thrown error. "d}ddXdgc` `  `e`.`  a $`$(g(,c, 0`04e4 8`8?" dd@%t?" nn@ @` n?" dd@   @@``PR    @ ` ` p>>'I $(  $ $ Z 11ȜȜ? @  > T Click to edit Master title style! ! $ 6 ?  > RClick to edit Master text styles Second level Third level Fourth level Fifth level!     S`B $ s *D1"X $ C "A moon" `H $ 0޽h ? ffb3D<___PPT10..&@ Custom Design    P* ( j`j   0A| P   >0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  P*    0`J|    >0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  R*  d  c $ ?  >  0Q|  @ > RClick to edit Master text styles Second level Third level Fourth level Fifth level!     S  6@\| `P  >0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  P*    6b| `  >0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  R*  H  0޽h ? 3380___PPT10.qZ  `(  ` ` 0O  P   > X*  ` 0 O     > Z*  ` 6O  _P  > X*  ` 6O  _  > Z* H ` 0޽h ? 3380___PPT10.P]O'O 0$L(  x  c $P =$x  > r  S `;$ `  > R " s *p@`B # s *D1"XXX $ C "A moon" f H  0޽h ? Of3b3___PPT10u. "z+D=' ̐= @B + O'O `H$( .1@ Hr H S 0$ @   > r H S $  > H H 0޽h ? Of3b3___PPT10u. "z+D=' ̐= @B + O'O @$(  @r @ S `$ @   > r @ S @Q$  > H @ 0޽h ? Of3b3___PPT10u. "z+D=' = @B + O'O -( k   l , C `۸$ @   > l - C ܸ$  > H  0޽h ? ffb3___PPT10u. q+D=' ̐= @B + O'O ( {5 l  C }$ @   > l  C  $  > H  0޽h ? ffb3___PPT10u. q+D=' ̐= @B + O'O ME (  !     $D,PH___PPT2001$@F  0" XPH___PPT2001$@Fw  <@'  0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  3 David Burgess   0"`,$D,  0"8x$D,PH___PPT2001$@Fl  C F$ @   > l  C G$  > H  0޽h ? ffb3. & ___PPT10 .qk^z+bkD ' E= @B D ' = @BA?%,( < +O%,( < +D4' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*%(D' =%(Df' =%(D' =4@BBBB%(D' =1:Bhidden*o3>+B#style.visibility<*%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =%(Df' =%(D' =4@BBBB%(D' =1:Bhidden*o3>+B#style.visibility<* %(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*%(+ O'O 8$( A 8r 8 S $ @   > r 8 S P$  > H 8 0޽h ? Of3b3___PPT10u. "z+D=' ̐= @B +l O'O    f ( ff l 4# <#,$D,  6"PXPH___PPT2001$DF   <4#0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  Ffrom l {  { ,$D,   6"h XPH___PPT2001$DF   <-{ 0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  Frcpt fl X h  X h ,$D,t   6"X h n  <  0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  *body r  S $ @   > r  S p$ > H  0޽h ? ffb3___PPT10.q"r+D' E= @B Du' = @BA?%,( < +O%,( <  8 H@ x     P+D4' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*%(D4' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*%(D4' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*%(+# O'O \( A$  l  C p$ @   >    < $  >   60 ?P ,$, ~What if body is large?:d  H  0޽h ? ffb3___PPT10.qh+]%DO' E= @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*%(+8+0+ +  O'O  0( .p1 l  C &$ @   >    <0( $P (<$D< Π   60 ?( h`P___PPT100(v___PPT9XP___PPTMac11\T   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography  pUse callback function that produces data; Returns one chunk each time called; Signals termination returning nil.LqZNE E  qH  0޽h ? ffb3___PPT10.1q+YDO' E= @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*%(+8+0+ +{   O'O $0( 0B0A0B l  C $ @   >    < $h  > p  6 ? hh$,4H___PPT10( f___PPT9H@n___PPTMac11H@   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography  What if body is complicated?Bd` d`  H  0޽h ? ffb3___PPT10.3qF+'DO' E= @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*%(+8+0+ +9  O'O .&@ @(      6",$@,   6"$@,PH___PPT2001$@ F   B"D$,0___PPT106___PPT9H___PPT2001$FB___PPTMac11   hnamd` Arial&Monotype Typography  -headers r   S $    >    0" X8 ,$@,   s *"X$@ ,PH___PPT2001$DF   6" Mm ,$@,   0"4 M ,$@,r   S $ >    <  x $,0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  -headers    <, r $,0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  *body    <@tXlD$ ,0___PPT106___PPT9H___PPT2001$FB___PPTMac11   hnamd` Arial&Monotype Typography  ,part 2    <  D$,0___PPT106___PPT9H___PPT2001$FB___PPTMac11   hnamd` Arial&Monotype Typography  *body    <`e tXL D$ ,0___PPT106___PPT9H___PPT2001$ FB___PPTMac11   hnamd` Arial&Monotype Typography  ,part 1 H   0޽h ? ffb3!!___PPT10!.3qFS+fDd' E= @B D' = @BA?%,( < +O%,( < +D' =%(D' =%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* %(D ' =%(DR ' =%(D' =A@BBBB0B%(D' =1:Bhidden*o3>+B#style.visibility<* %(D' =A@BBBB0B%(D' =1:Bhidden*o3>+B#style.visibility<* %(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =4@BBBB%(D' =1:Bhidden*o3>+B#style.visibility<* %(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* %(D ' =%(DR ' =%(D' =A@BBBB0B%(D' =1:Bhidden*o3>+B#style.visibility<* %(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<* %(D' =A@BBBB0B%(D' =1:Bhidden*o3>+B#style.visibility<* %(D' =4@BBBB%(D' =1:Bhidden*o3>+B#style.visibility<* %(+0+0+  ++0+  ++0+  ++0+  ++0+  ++0+  ++0+  ++0+  ++0+  ++0+  +  O'O P(H(  (r ( S  $ @   >  (  BP $ > H ( 0޽h ? ffb3___PPT10u.3qF+D=' ̐= @B +  O'O `0(  0r 0 S @ $ @   >  0  Bp  $H  > ? 0 6  ? X@___PPT10 V___PPT980Z___PPTMac114,   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography  UTransform declaration into an LTN12 source; Pass source as body to sending function.0Vd-`(`U H 0 0޽h ? ffb3___PPT10u.3qF+D=' n= @B + O'O (  l  C  $    > l  C 0 $  > H  0޽h ? ffb3___PPT10u. q꾖+D=' ̐= @B +c O'O VNpP( +R Pr P S  $ @   >  P Zд  ?$X  > ~ P 6  ? <4H___PPT10( f___PPT9H@n___PPTMac11H@   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography  ZWould like to send PDF; Binary data has to be encoded (Base64); Want to encode on-the-fly.>[d`(`` Z H P 0޽h ? ffb3___PPT10u. q+D=' n= @B + O'O X$(  Xx X c $A $ @   > l X C PC $  > H X 0޽h ? ffb3___PPT10u. q+D=' ̐= @B +  O'O \6(  \r \ S 0 $ @   >  \ <`  ?4,___PPT10     v___PPT9XP     ___PPTMac11 tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  [2] = { headers = { ["content-type"] = 'application/pdf; name="roadmap.pdf"', ["content-disposition"] = 'attachment; filename ="roadmap.pdf"', ["content-description"] = 'Detailed world domination plan', ["content-transfer-encoding"] = 'BASE64' }, body = ltn12.source.chain( ltn12.source.file(io.open("/plans/roadmap.pdf", "r")), ltn12.filter.chain( mime.encode("base64"), mime.wrap("base64") ) ) }dFCC C9 c IcCccc) c $C$(c(,c,*0c04c4#8c8    <y ?H$D,8___PPT10F___PPT9( R___PPTMac11,$ tnamdlCourier New&Monotype Typography  Ufunction ltn12.filter.cycle(low, ctx, extra) return function(chunk) local ret ret, ctx = low(ctx, chunk, extra) return ret end end function mime.normalize(marker) return ltn12.filter.cycle(mime.eol, 0, marker) end.PCC  A  6^ ?H @___PPT10 V___PPT980j___PPTMac11D<   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography  MChunks can be broken arbitrarily; Filters have to keep context between calls;4Nd"`+``N H  0޽h ? ffb3___PPT10. q꾖+YDO' E= @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*%(+8+0+ +&  O'O _(  x  c $0I$ @   >   <@ʓ ?$D,8___PPT10F___PPT9( R___PPTMac11,$ tnamdlCourier New&Monotype Typography  int eol(lua_State *L) { int ctx = luaL_checkint(L, 1); size_t isize = 0; const char *input = luaL_optlstring(L, 2, NULL, &isize); const char *last = input + isize; const char *marker = luaL_optstring(L, 3, CRLF); luaL_Buffer buffer; luaL_buffinit(L, &buffer); while (input < last) ctx = translate(*input++, ctx, marker, &buffer); luaL_pushresult(&buffer); lua_pushnumber(L, ctx); return 2; }.FCC  H  0޽h ? ffb3___PPT10. q꾖+YDO' E= @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*%(+8+0+ +  O'O `L(  x  c $ $ @   >   <+ ?$D,8___PPT10F___PPT9( R___PPTMac11,$ tnamdlCourier New&Monotype Typography  #define candidate(c) (c == CR || c == LF) int translate(int c, int last, const char *mark, luaL_Buffer *buffer) { if (candidate(c)) { if (candidate(last)) { if (c == last) luaL_addstring(buffer, mark); return 0; } else { luaL_addstring(buffer, mark); return c; } } else { luaL_putchar(buffer, c); return 0; } }<*FqACC  H  0޽h ? ffb3___PPT10. q꾖+YDO' E= @B D ' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*%(+8+0+ +V% O'O  d(  dx d c $` $ @   >  d < "  0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  Hsocket  d <p " @@$@,0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  Fmime  d < "` @@p $@,0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  Fsmtp  d < "@@$@,0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  Dtp   d < "` ``p 0___PPT106___PPT9B___PPTMac11   hnamd` Arial&Monotype Typography  Gltn12   d 0 @,$@,  d 0@ @ ` ,$D , d 0p @ @ ,$@, d@ 0h @`h ,$@ ,B d 6D@`` ,$D,B d@ 6Dp @` ,$D,H d 0޽h ?Odd ddd dddd ddd ffb31)___PPT10 . q꾖+,fD)' E= @B D' = @BA?%,( < +O%,( < +DY' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* d%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =%(Du' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<*d%(D' =4@BBBB%(D' =1:Bvisible*o3>+B#style.visibility<* d%(++0+d ++0+d ++0+d + O'O x(  xl x C 0d $ @   > l x C e $                "X > w x <pq  ?@$D,l___PPT10x     ___PPT9      ___PPTMac11x p  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  cfunction metat.__index:greet(domain) local r, e = self.tp:check("2..") if not r then return nil, e end r, e = self.tp:command("HELO", domain) if not r then return nil, e end return self.tp:check("2..") end Z%CCc C CcCC C $c$ (c($,c,0c04c48C8RD  T   x 6}  ?p $,8___PPT10F___PPT9( F___PPTMac11    hnamd` Arial&Monotype Typography  -Tedious, error prone, virotic, not finalized.".d-`- H x 0޽h ? ffb3h`___PPT10@. q꾖+{ D' E= @B DS' = @BA?%,( < +O%,( < +DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*x%(DA' =%(D' =%(D' =A@BBBB0B%(D' =1:Bvisible*o3>+B#style.visibility<*x%(+p+0+x ++0+x + O'O t(  tl t C !$ @   > l t C #$  > H t 0޽h ? ffb3___PPT10u. q꾖+D=' ̐= @B +,  O'O   | (  |r | S c$ @   >   | <0n ?- \Tx___PPT10XP ___PPT9 ___PPTMac11 tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  function metat.__index:greet(domain) self.try(self.tp:check("2..")) self.try(self.tp:command("HELO", domain)) return self.try(self.tp:check("2..")) endZ%CCc C Cc c)c c $C$:@ ; l | C 2$   > H | 0޽h ? ffb3___PPT10u. q꾖+D=' = @B + O'O  (  r  S =$ @   > l  C m8$  > H  0޽h ? ffb3___PPT10u. q꾖+D=' ̐= @B + nf@( @ R  3    >l  C | @  > H  0޽h ? 3380___PPT10.qZ  tl(  R  3    >r  #  @  >  H  0޽h ? 3380___PPT10.qT6  tl(  R  3    >r  # @R @  >  H  0޽h ? 3380___PPT10.qT6  (  p` R  3    >  C p  @X  >@P___PPT100(v___PPT9XPb___PPTMac11<4   hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography   YDavid, who lives in Melbourne, knows RFCs by experience, whereas I only read them. First FTP server written back in 89... My inbox has about 700 messages from him. He wrote all of them while being upside-down, which always strikes me as odd.:S&+M  H  0޽h ? 3380___PPT10.qT6  sk(  ) ) R  3    >q  C >I  @  >@___PPT10 V___PPT980J___PPTMac11$   hnamd` Arial&Monotype Typography   What is SMTP anyways. Text mode protocol. Send commands, read back replies. FTP also uses the same underlying command structure, and the implementation of the two modules share a subsystem.&5s H  0޽h ? 3380___PPT10.qT6*  0:(  R  3    >  C 0`  @  >|X___PPT1080___PPT9h`___PPTMac11`X   hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography   6Here is the simplest interface we can come up with. We can add some sugar, such as the multiple-recipient list, passed as a table. It works well for small, static messages. But what if the content is large. Messages with attachments can be several megabytes long. We don't want to load all that up into memory.H7*[ (`"( H  0޽h ? 3380___PPT10.qU  ^ V @ (   R   3    >\   C #`  @  >___PPT10`X  ___PPT9  ___PPTMac11d\   hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography    The idea we use in LuaSocket is to pass a function instead of a string. This function will be repeatedly called whenever the SMTP module needs data to send. The protocol to these so called "source" functions is formalized by LTN12. As an example, consider a source that produces the contents of a file. This is actually a factory: a function that creates and returns custom functions. Hail Lua, where functions are first class citizens. Here we are also taking advantage of Lua's lexical scoping to store the context between calls (file handle)~!HT!* ` GR3) $`$A((:*  AH   0޽h ? 3380___PPT10.q, ZRP(  R  3    >X  C 0Y`  @H  >0P___PPT100(v___PPT9XPR___PPTMac11,$   hnamd` Arial&Monotype Typography   <Here is how we can use a file source with the SMTP module. Nothing is really loaded into memory until the module needs data to be sent. Even then, the source can control the granularity. But what if the message is complicated? We don't want our users to be forced to know all the details and write a file to be sent.>=;.S ` "S H  0޽h ? 3380___PPT10.q, RJ`$(  $X $C    >J $S n`  @  >lX___PPT1080___PPT9h`v___PPTMac11PH   hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography   pHow complicated can it be? Here is an example of multipart message. <> We want to be able to describe a message like this, without creating it in memory. Roberto would never send me a message with an HTML file attached, but bear with me. DDS T H $ 0޽h ? 3380___PPT10.q,, p,<(  ,X ,C    > ,S 0`  @,  >H___PPT10( f___PPT9H@N___PPTMac11(    hnamd` Arial&Monotype Typography   "Good thing Lua was designed as a description language. Notice the ltn12 source doesn't load anything into memory. But how to send the message we have just declared?8)`m` " H , 0޽h ? 3380___PPT10.q,  4(  4X 4C    > 4S `  @  >  H 4 0޽h ? 3380___PPT10.q,  <(  <X <C    > <S $  @  >  H < 0޽h ? 3380___PPT10.qZU  De(  DX DC    > DS  @p  >X`___PPT10@8___PPT9xpJ___PPTMac11$ x   x   x     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography   We start with a few historical notes on LuaSocket Then we move on to our case study which is the SMTP support shipping with the newest versions. We will focus on little details of Lua that enables us to taylor a very elegant interface to sending e-mail messages. I realize my abstract mentioned more stuff. For some reason I had in mind it would be a longer talk, so I had to downsize.N2_v r (\H D 0޽h ? 3380___PPT10.qZ zrpL ( @ LX LC    >r LS `O~ @  > H L 0޽h ? 3380___PPT10.qZ9 I(  R  3    >  C P,a  @H  >0P___PPT100(v___PPT9XPR___PPTMac11,$   hnamd` Arial&Monotype Typography   The solution LuaSocket adopts is given by LTN13. We use Lua's error reporting to implement an exception mechanism with two tiny helper function factories.>2_ ` "<_ H  0޽h ? 3380___PPT10.qI." >(  R  3    >  C a  @  > L&About 100 lines of nice, modular code. 'H  0޽h ? 3380___PPT10. qO! _(  R  3    >  C 8a  @  > mGAll SMTP code, with error checking fits in 100 lines of clean Lua code. HH  0޽h ? 3380___PPT10. qqO  (  R  3    >   C 0`  @h  >PP___PPT100(v___PPT9XPr___PPTMac11LD   hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography   QRoberto would actually send me a PDF; But PDF files are binary, and SMTP is text mode. Need to encode as BASE64 before sending. Want to do everything on the fly, with the same requirements: not allowed to load everything into memory.:&1)i  H  0޽h ? 3380___PPT10.qGr. >(  R  3    >  C `  @  > L&Introducing LTN12 filters and chains.  'H  0޽h ? 3380___PPT10.qGr C;( {5v R  3    >A  C 0`  @  >8___PPT10F___PPT9( V___PPTMac110(   hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography   Once again, nothing happens until this message is sent. And even then, things happen chunk by chunk. Filters are great to use, but how hard is it to write filters?e? H  0޽h ? 3380___PPT10.qGrv  ( {5 R  3    >  C a  @  >|X___PPT1080___PPT9h`___PPTMac11`X   hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography   Two of the involved modules have no depencencies. Socket and LTN12. Socket implements the core comunications capabilities. LTN12 implements that technical note functionality. The tp module implements the command/response structure common to SMTP and FTP (and not by HTTP) The MIME module implements the encodings commonly used by SMTP The SMTP implements the message abstraction, and message sending functionality.D2}a? O H  0޽h ? 3380___PPT10.qGrx  (  R  3    >  C %a  @h  >PP___PPT100(v___PPT9XPr___PPTMac11LD   hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography     hnamd` Arial&Monotype Typography   >This is the error convention has been adopted throughout LuaSocket and many other libraries. If a function succeeds, it returns whatever it is that it should return. If it fails, it returns nil, followed by an error message. I subscribe to this idea, but it can be challenging to implement code that conforms to it. The reason is that each function might perform many operations, and there can be several layers of functions. There would be a lot of code like the above.:]n,  H  0޽h ? 3380___PPT10.qGr # 0(  X C    > S Z @  >  H  0޽h ? 3380___PPT10. qqO$ A9P(  X C    >9 S 0 @  >@___PPT10 V___PPT980J___PPTMac11$   hnamd` Arial&Monotype Typography   LTN12 describes a series of tricks on how to implement these ideas. We see here the code for an end-of-line marker translator. &D: H  0޽h ? 3380___PPT10.qGr|% p(  X C    > S & @  > hWe talked about lots of different modules, so lat zoom out a little and take a look at the dependencies. iH  0޽h ? 3380___PPT10.qGrX& h(  X C    > S P @  > jDLTN12 describes a series of tricks on how to implement these ideas.  EH  0޽h ? 3380___PPT10.qGrcxp^RЀ3ÿ lHbP  @AL G@;b `B&V\Ap/O2)jI J?^Af!Vٰ(  F/ 0|DArial00w I@\P^\!DTimes00w I@\P^\! DCourier New I@\P^\!0DWingdingsw I@\P^\!@D-3 00000w I@\P^\! ` .  P @     !P Oh+'0T hp  'Slide 1 Steve Overbyb}) Diego Nehab75Microsoft PowerPoint@L@ @VMX&G<PICT4 HH HH  tL7 8GQVTI:(  >LTZXM>,  :DKPOG9(C1}h`cfimmfT(8ze`cgjonhV-8jXTX[^ba\M+O"smf__jxrs{i))xjd__jxqsxn0'ry^VSS^t}legktd/ULy_aecgp|{vW  St\`dcgnzys~` ReRTWU[amtlho~^ X_cfdgr}yptwszue{`ccgs{}vortqu~ajTYWYflmhbfhber{\Vuhffyvxtspkf{p^odcdv|uwspnicuy^aWilfjhea\Ubwa?~lkl|{vpjhhQGǺzggiwxsmife{]FİykZZ\iwv|{lha\XVi`gĺ|ru|yspqty umqw}upmmot)f]cjsnhd`^_c{-gsw||xw|~Ɏzp{yxtswxÙvvuycmxqztjjfeggpm&Önj|vy-,hevp||}~~sz8,XYgamolynnogknu=miqztol|zu~lu]pyldv{r~prx{s~{{  {xx ~wqrumjjus$||)*x}x2*zwzrs{x{qjni|y2sA|}}{|zIFvww}v|wtSEgfgmv~xhqvjfer~tSs^Ŭ|wtvioq~ddsqzp}rdkjwoaeajvwbndU\\fsostϽ|prr{_zƳ~xknmtivqouj[^]co}gspǵλǷwrqrLwıqmmn}Vvɺxa]]_l{SsdȽƾzvlje|3møȼysifaw<mڿmfYWRfp9sI˼¹p]]ei}!RļͿp_\cgx)TŲfTQWYg&s(ɿfbcb| /¾ȼgaca|0Žt]VWTmtrýųe]\_pZ ¿e][^nb ¼tYRPQ`wZmbžεyqgZUh0lǼƯvneZUe8lj`WNHV5mªta^a%¾s^[g &fRPn|] gfǹŰzpzzw)rĴvmuzv0ti_fpg}x-f rulX_IosnX^QorscepaLPsKa,h^[[MbY 5h]ZZK__ 3rZQLnxN?QV [-k]WWxpU5j]XUunZ4]QLJrwf`QU2skdctkmF:phbbrknL7zsqa[VTe_aER\}yph[1b{}vnh^5Zsymnyj`\R1I"Ouxz{nY3%Twxy{n\8"LjwylkodS2< 7Thqng`VG, ;XluqidZM2 6Pclg`ZRF-+       V835T SM835T SM835T SM^;6>^2ӱT h;6>^2ӱT h;X>m\T8o;6-FX'=!/xyQT;}N;6-FX'=!/xyQT;}N4;j)FX'iGb8xyQTQ;}l ;6-OhG(^efQR9Ts!.T͈@{ ;6-OhG(^efQR9Ts!.T͈@{ 5;l*i$nQJ~mx W^[lzAR\4,Ѝ8\T%;6Rok'H*>$ T xh;6Rok'H*>$ T xh6;m*{-:yLQ'`795ǺZK6(4eJ=!D3;[//&s]mEd( WG-W wDT%܍2v3;[//&s]mEd( WG-W wDT%܍2v5;Q5&;.ħۏY`T N-Xd;.ħۏY`T N-Xd;0 ǹA߮8vP ?5l)fPtVa<$      6FOGD;9H>FB;G>L;.MDJ= 3FA?$DAAI#$B 'KCA@K* D/     7:)=R??RY?,???n^\HJ\\Z\Z<?HV^_% B\_ B28THB\__.S^27AU^__ B\__KV^:         C7^O ՜.+,00    On-screen Show6F  ArialTimes Courier New WingdingsＭＳ ＰゴシックCustom DesignLuaSocket behind the scenes Short BioOutline of talkHistorical notesHistorical notesCurrent versionOutline of talkSMTP (RFC2821)Protocol abstractionLTN12 sourcesUsing sourcesMessage Format (RFC2822)Message abstractionOur message APIHow hard is it?Zoom in on attachmentsLTN12 filters and chainsZoom in on attachmentsCreating filters: high-levelCreating filters: low-levelCreating filters: low-levelSMTP dependenciesError checkingLTN13 exceptionsNo 'if' statements Conclusions  #0 ___PPT9  P pRdO);6PicturesPowerPoint Document(SummaryInformation(      !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnoprstuvwxyz{|}~quf  !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdeghijklmnopqrstvwxyz{|}~DocumentSummaryInformation8`Current UserA  Fonts UsedDesign Template Slide Titles#_ǫ "DDiego NehabDiego Nehab                        "   `     ! #`h___PPT2001D<4X___PPTMac11’@f   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography D   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography `   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography  <   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography  t   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography `   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography   tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography        !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPtnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography D tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography T tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography "    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography $  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography  tnamdlCourier New&Monotype Typography @   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography !   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography #H   hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography    hnamd` Arial&Monotype Typography ( ʚ;&)ʚ;dd? %_3LuaSocket behind the scenes6 )    Diego Nehab  4 Short Bio Graduated from PUC in CS & E, 1999; Worked in Tecgraf 1995-2002; MSc in PL with Roberto, 2001; 3rd year PhD candidate at Princeton; Computer Graphics.DA%  5Outline of talk ~A few historical notes Case study: SMTP support Protocol abstraction Message abstraction Implementation highlights Conclusionsp0C     Historical notes 1.0, 1999, 1.5k C, 200 man 1.1, 2000, 1.5k C, 1.3k Lua, 500 man added protocol support for HTTP, SMTP, FTP 1.2, 2001, 2k C, 1.3k Lua, 900 man buffered input and non-blocking I/O UDP support object oriented syntaxN@+#G@+#G 23KQ Historical notes 1.3, 2001, 2.3k C, 1.6k Lua, 1.2k man streaming with callbacks added select function 1.4, 2001-2, 2.2k C, 2.2k Lua, 1.9k man LTN7 added URL module named parametersl&/('&/( o2 Current version 2.0, 2005, 4.6k C, 2.5k Lua, 4.7k man Extensible C architecture, split in modules LTN12 (sources, sinks and filters) MIME support (partial but honest) Multipart messages support LTN13 (finalized exceptions) Package proposal Improved non-blocking code, robust to signals...p&dd&,#"  6Outline of talk ~A few historical notes Case study: SMTP support Protocol abstraction Message abstraction Implementation highlights Conclusionsp0C     SMTP (RFC2821)D!!  ! [lua:roberto] telnet mail.tecgraf.puc-rio.br 25 220 tecgraf.puc-rio.br ESMTP Sendmail 8.9.3/8.9.3 helo lua 250 tecgraf.puc-rio.br Hello lua, pleased to meet you mail from: 250 ... Sender ok rcpt to: 250 ... Recipient ok data 354 Enter mail, end with "." on a line by itself Subject: World domination: instructions. Commence stage two. . 250 RAA10452 Message accepted for delivery quit 221 tecgraf.puc-rio.br closing connection"pnPZ02 6  $*$/  1$$@((+,,00)4488,   "    !Protocol abstraction status, error = smtp.send { from = "", rcpt = "", body = "Subject: World domination: instructions.\r\n\r\n" .. "Comence stage two." }dP'Cc C c C6ccc C $$                 U & LTN12 sources function ltn12.source.file(handle) return function() local chunk = handle:read(BLOCKSIZE) if not chunk then handle:close() end return chunk end end,#dFC ' Using sources status, message = smtp.send { from = "", rcpt = "", body = ltn12.source.file(io.open("/mail/body", "r")) }dP)Cc C c (CcC                 ( ,Message Format (RFC2822),! | From: Roberto Ierusalimschy To: Diego Nehab Subject: World domination: roadmap. Content-Type: multipart/mixed; boundary=part This message contains attachments --part Content-Type: text/plain Please see attached roadmap. --part Content-Type: text/html; name="roadmap.html" ... --part--0}PCC)C C CCCC  C  $C$!(C(,c,0C04C48C8SMTP dependencies  A Error checking DFunction return convention Return nil, followed by message on error;Bd*dA  EBLTN13 exceptions try = newtry(finalizer): factory; On success, try returns all arguments; On failure, throws the second argument; Calls finalizer before raising the exception. foo = protect(bar): factory; foo executes bar in a protected environment; Returns nil followed by any thrown error. "d}ddXdgc` `  `e`.`  a $`$(g(,c, 0`04e4 8`8