- #FcsdZWYdZZdZ_dkZdkZ`dkZaeed obeiZn deiZldk Z me i djo+nddfZ odfZ pdfZ nRrdkZseifZ teieieifZ ueieifZ v[w[ }ea~d Zd ZeiZd efd YZd klZlZeeedZdfdYZ>dfdYZ eed oeie_ee_n[eZdS(sTimeout Socket This module enables a timeout mechanism on all TCP connections. It does this by inserting a shim into the socket module. After this module has been imported, all socket creation goes through this shim. As a result, every TCP connection will support a timeout. The beauty of this method is that it immediately and transparently enables the entire python library to support timeouts on TCP sockets. As an example, if you wanted to SMTP connections to have a 20 second timeout: import timeoutsocket import smtplib timeoutsocket.setDefaultSocketTimeout(20) The timeout applies to the socket functions that normally block on execution: read, write, connect, and accept. If any of these operations exceeds the specified timeout, the exception Timeout will be raised. The default timeout value is set to None. As a result, importing this module does not change the default behavior of a socket. The timeout mechanism only activates when the timeout has been set to a numeric value. (This behavior mimics the behavior of the select.select() function.) This module implements two classes: TimeoutSocket and TimeoutFile. The TimeoutSocket class defines a socket-like object that attempts to avoid the condition where a socket may block indefinitely. The TimeoutSocket class raises a Timeout exception whenever the current operation delays too long. The TimeoutFile class defines a file-like object that uses the TimeoutSocket class. When the makefile() method of TimeoutSocket is called, it returns an instance of a TimeoutFile. Each of these objects adds two methods to manage the timeout value: get_timeout() --> returns the timeout of the socket or file set_timeout() --> sets the timeout of the socket or file As an example, one might use the timeout feature to create httplib connections that will timeout after 30 seconds: import timeoutsocket import httplib H = httplib.HTTP("www.python.org") H.sock.set_timeout(30) Note: When used in this manner, the connect() routine may still block because it happens before the timeout is set. To avoid this, use the 'timeoutsocket.setDefaultSocketTimeout()' function. Good Luck! s$Revision: 511 $s$Timothy O'Malley Ns_no_timeoutsocketsnti&'iH'i3'cs~|adS(N(stimeouts_DefaultTimeout(stimeout((s"src/feedvalidator/timeoutsocket.pyssetDefaultSocketTimeout~scstSdS(N(s_DefaultTimeout(((s"src/feedvalidator/timeoutsocket.pysgetDefaultSocketTimeoutssTimeoutcstZRS(N(s__name__s __module__(((s"src/feedvalidator/timeoutsocket.pysTimeouts (sAF_INETs SOCK_STREAMcsr|tjp |tjo5|ot|||Snt||Sntt||tSdS(N(sfamilysAF_INETstypes SOCK_STREAMsprotos_sockets TimeoutSockets_DefaultTimeout(sfamilystypesproto((s"src/feedvalidator/timeoutsocket.pys timeoutsockets  s TimeoutSocketcstZdZdZdZdZdZdZedZ dZ dZ eed Z ed Z dd Z&dd Z/d ddZ4dZRS(sTimeoutSocket object Implements a socket-like object that raises Timeout whenever an operation takes too long. The definition of 'too long' can be changed using the set_timeout() method. iics||_||_dS(N(ssocksselfs_sockstimeouts_timeout(sselfssockstimeout((s"src/feedvalidator/timeoutsocket.pys__init__s cst|i|SdS(N(sgetattrsselfs_sockskey(sselfskey((s"src/feedvalidator/timeoutsocket.pys __getattr__scs|iSdS(N(sselfs_timeout(sself((s"src/feedvalidator/timeoutsocket.pys get_timeoutscs||_dS(N(stimeoutsselfs_timeout(sselfstimeout((s"src/feedvalidator/timeoutsocket.pys set_timeoutscs&||_|ii|SdS(N(sblockingsselfs _blockings_socks setblocking(sselfsblocking((s"src/feedvalidator/timeoutsocket.pys setblockings csVd}y|i|Wn%tj o}|d}nX|SdS(Ni(serrcodesselfsconnectsaddrsErrorswhy(sselfsaddrswhyserrcode((s"src/feedvalidator/timeoutsocket.pys connect_exs  c s|tjo||f}n|i}|i} |i}y;|i d|i ||i |dSWnt j ow} |i || o n| d}|o |tjo dSn|tjo nnX| oOtig|gg| \} }}|o|i |ddSnntdt|dS(Nisdumbhackis"Attempted connect to %s timed out.(sportsNonesaddrsselfs_sockssocks_timeoutstimeouts _blockingsblockings setblockingsconnectsErrorswhyserrcodesdumbhacks _IsConnecteds _ConnectBusysselectsrswsesTimeoutsstr( sselfsaddrsportsdumbhacksesblockingssockserrcodeswsrstimeoutswhy((s"src/feedvalidator/timeoutsocket.pysconnects0         ' c sf|i}|i} |i}yk|id|i\}}|i||i || } | i|| |fSWndt j oU} |i|| o  n | d} |tjo nnX| oLti|ggg| \} }}| o|iddSnntddS(NisdumbhackisAttempted accept timed out.(sselfs_sockssocks_timeoutstimeouts _blockingsblockings setblockingsacceptsnewsocksaddrs __class__stimeoutnewsocksErrorswhyserrcodes _AcceptBusysdumbhacksselectsrswsesTimeout( sselfsdumbhacksesaddrssockserrcodesblockingswsnewsocksrstimeoutswhystimeoutnewsock((s"src/feedvalidator/timeoutsocket.pysaccepts,       ' cs|i}|ioL tig|gg|i\}}}!| o"t dnn#|i ||SdS(NsSend timed out( sselfs_sockssocks _blockingsselects_timeoutsrswsesTimeoutssendsdatasflags(sselfsdatasflagssrswssockse((s"src/feedvalidator/timeoutsocket.pyssends   * cs&'|i}(|ioL)ti|ggg|i\}}}*| o+t dnn,|i ||SdS(NsRecv timed out( sselfs_sockssocks _blockingsselects_timeoutsrswsesTimeoutsrecvsbufsizesflags(sselfsbufsizesflagssrswsessock((s"src/feedvalidator/timeoutsocket.pysrecv&s   * srics-/0|id|_1t|||SdS(Ni(sselfs_copiess TimeoutFilesflagssbufsize(sselfsflagssbufsize((s"src/feedvalidator/timeoutsocket.pysmakefile/scsA45|idjo6|iin8|id|_dS(Nii(sselfs_copiess_socksclose(sself((s"src/feedvalidator/timeoutsocket.pysclose4s(s__name__s __module__s__doc__s_copiess _blockings__init__s __getattr__s get_timeoutsNones set_timeouts setblockings connect_exsconnectsacceptssendsrecvsmakefilesclose(((s"src/feedvalidator/timeoutsocket.pys TimeoutSockets       ,+  s TimeoutFilecs>tZdZACdddZKdZOdZTdZXddZndd Zdd Z d Z RS( sRTimeoutFile object Implements a file-like object on top of TimeoutSocket. sricsfCD||_Ed|_F|djoF||_nGt|d oGd|i_ndS(Niis_inqueues(ssocksselfs_socks_bufsizesbufsizeshasattrs_inqueue(sselfssocksmodesbufsize((s"src/feedvalidator/timeoutsocket.pys__init__Cs   csKLt|i|SdS(N(sgetattrsselfs_sockskey(sselfskey((s"src/feedvalidator/timeoutsocket.pys __getattr__Kscs#OP|iiQt|_dS(N(sselfs_socksclosesNone(sself((s"src/feedvalidator/timeoutsocket.pyscloseOscsTU|i|dS(N(sselfssendsdata(sselfsdata((s"src/feedvalidator/timeoutsocket.pyswriteTsics7XY|i}Z|i}[x[do\t|i}]||jo djno^Pn_|}`|djoat|||}nb|i |}c| odPne|i||_q!Wf|i}gd|_h|djo ||jo!i|||_j|| }nk|SdS(Niis( sselfs_socks_bufsizeslens_inqueuesdatalenssizesbufsizesminsrecvsbufsdata(sselfssizesdatalensdatas_bufsizesbufsizesbufs_sock((s"src/feedvalidator/timeoutsocket.pysreadXs(   !    c sno|i}p|i}qxqdorti|id}s|djotPnut|i}v||jo djnowPnx|}y|djozt |||}n{|i |}|| o}Pn~|i||_q!W|i}d|_|djo.|d}|||_|| }n?|djo ||jo!|||_|| }n|SdS(Nis is(sselfs_socks_bufsizesstringsfinds_inqueuesidxslensdatalenssizesbufsizesminsrecvsbufsdata( sselfssizesidxs_bufsizesdatasdatalensbufsizesbufs_sock((s"src/feedvalidator/timeoutsocket.pysreadlinens6   !     csg}|i}x|otti|d}|djo2|d}|i|| ||}n|i|d}q!W|SdS(Ns iis(sresultsselfsreadsdatasstringsfindsidxsappend(sselfssizehintsresultsidxsdata((s"src/feedvalidator/timeoutsocket.pys readliness   cs dS(N((sself((s"src/feedvalidator/timeoutsocket.pysflushs( s__name__s __module__s__doc__s__init__s __getattr__scloseswritesreadsreadlines readlinessflush(((s"src/feedvalidator/timeoutsocket.pys TimeoutFile>s   (!s__doc__s __version__s __author__sselectsstringssocketshasattrs_sockets_no_timeoutsocketsossnames _IsConnecteds _ConnectBusys _AcceptBusyserrnosEISCONNs EINPROGRESSsEALREADYs EWOULDBLOCKsEAGAINsNones_DefaultTimeoutssetDefaultSocketTimeoutsgetDefaultSocketTimeoutserrorsErrors ExceptionsTimeoutsAF_INETs SOCK_STREAMs timeoutsockets TimeoutSockets TimeoutFile(s _ConnectBusys TimeoutSockets TimeoutFilesstrings _AcceptBusys timeoutsockets SOCK_STREAMs __author__s _IsConnectedsTimeoutsErrorssocketserrnos_socketsAF_INETssetDefaultSocketTimeoutsselectsgetDefaultSocketTimeouts __version__sos((s"src/feedvalidator/timeoutsocket.pys?Ws@             f