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TypeError ValueErrorrwarningswarn)r!epackeds r2 json_packerrG\sz      & 1& 2 2  3 z " sOO     & 1& 2 2    21 2 2 2      !s14B*AB%B*%B*s str | bytesct|tr|dd}tj|S)z,Convert a json bytes or string to an object.r%replace)r&r5decoder?loads)rHs r2 json_unpackerrNxs5!U( HHVY ' ' :a==r3ocPtjt|tS)z'Pack an object using the pickle module.)pickler@r PICKLE_PROTOCOL)rOs r2 pickle_packerrSs < Q 9 99r3s r+ctjd}dd|dd|ddfDS)zGenerate a new random id. Avoids problematic runtime import in stdlib uuid on Python 2. Returns ------- id string (16 random bytes as hex-encoded text, chunks separated by '-') -c3ZK|]&}t|dV'dS)asciiN)rrL).0xs r2 znew_id..s6KK1GAJJ%%g..KKKKKKr3N)osurandomjoin)bufs r2new_idrasG *R..C 88KKRaR#abb'8JKKK K KKr3cDtdS)zReturn new_id as ascii bytesrX)rar.r3r2 new_id_bytesrds 88??7 # ##r3zSession.sessionzSession.usernamezSession.keyfile)identuserkeyfileSession)r/rgzUse HMAC digests for authentication of messages. 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The Session object handles building messages and sending them with ZMQ sockets or ZMQStream objects. Objects can communicate with each other over the network via Session objects, and only need to work with the dict-based IPython message spec. The Session will handle serialization/deserialization, security, and metadata. Sessions support configurable serialization via packer/unpacker traits, and signing with HMAC digests via the key/keyfile traits. Parameters ---------- debug : bool whether to trigger extra debugging statements packer/unpacker : str : 'json', 'pickle' or import_string importstrings for methods to serialize message parts. If just 'json' or 'pickle', predefined JSON and pickle packers will be used. Otherwise, the entire importstring must be used. The functions must accept at least valid JSON input, and output *bytes*. For example, to use msgpack: packer = 'msgpack.packb', unpacker='msgpack.unpackb' pack/unpack : callables You can also set the pack/unpack callables for serialization directly. session : bytes the ID of this Session object. The default is to generate a new UUID. username : unicode username added to message headers. The default is to ask the OS. key : bytes The key used to initialize an HMAC signature. If unset, messages will not be signed or checked. keyfile : filepath The file containing a key. If this is set, `key` will be initialized to the contents of the file. FTzDebug output in the Session)confighelpzWhether to check PID to protect against calls after fork. This check can be disabled if fork-safety is handled elsewhere. r?zThe name of the packer for serializing messages. Should be one of 'json', 'pickle', or an import name for a custom callable serializer.packerrwr"r#rlc<|d}|dkr!t|_t|_||_dS|dkr!t |_t|_||_dStt||_dSNryr?rQ) lowerrGpackrNunpackunpackerrSpickle_unpackerrr+r~rwrys r2_packer_changedzSession._packer_changedis|Um 99;;& #DI'DKDMMM YY[[H $ $%DI)DKDMMM#CHH--DIIIr3zjThe name of the unpacker for unserializing messages. Only used with custom functions for `packer`.rc<|d}|dkr!t|_t|_||_dS|dkr!t |_t|_||_dStt||_dSr) rrGrrNrrrSrrr+rs r2_unpacker_changedzSession._unpacker_changed~s|Um 99;;& #DI'DKDKKK YY[[H $ $%DI)DKDKKK%c#hh//DKKKr3riz"The UUID identifying this session.r+cVt}|d|_|SNrX)rar.bsession)r~us r2_session_defaultzSession._session_defaults# HH)) r3rcD|jd|_dSr)rr.rr}s r2_session_changedzSession._session_changeds ++G44 r3r3USERrz:Username for the Session. Default is your system username.)rrzZMetadata dictionary, which serves as the default top-level metadata dict for each message.rz$execution key, for signing messages.r5ctSr)rdrs r2 _key_defaultzSession._key_defaults ~~r3r/c.|dSr) _new_authr}s r2 _key_changedzSession._key_changeds r3z hmac-sha256zcThe digest scheme used to construct the message signatures. Must have the form 'hmac-HASH'.signature_schemecF|d}|dstd|z|ddd} tt||_n%#t $r}td|z|d}~wwxYw|dS)Nryzhmac-z0signature_scheme must start with 'hmac-', got %rrVrz!hashlib has no such attribute: %s) startswithrsplitgetattrhashlib digest_modAttributeErrorr)r~rwry hash_namerEs r2_signature_scheme_changedz!Session._signature_scheme_changedsUm~~g&& WORUUVV VIIc1%%a(  U%gy99DOO U U U@9LMMST T U s A(( B 2BB  t.CallablectjSr)rsha256rs r2_digest_mod_defaultzSession._digest_mod_defaults ~r3rcp|jr'tj|j|j|_dSd|_dS)N) digestmod)r/hmacHMACrauthrs r2rzSession._new_auths5 8  $(doFFFDIIIDIIIr3izzThe maximum number of digests to remember. The digest history will be culled when it exceeds this value. z&path to file containing execution key.rgct|dd5}||_ddddS#1swxYwYdS)Nryrb)openreadstripr/)r~rwfs r2_keyfile_changedzSession._keyfile_changeds &- & & (!vvxx~~''DH ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( (s,AAArcr|d}t|stdt|zdS)Nryzpacker must be callable, not %scallablerAtypers r2 _pack_changedzSession._pack_changeds@Um}} K=S IJJ J K Kr3rcr|d}t|stdt|zdS)Nryz!unpacker must be callable, not %srrs r2_unpack_changedzSession._unpack_changedsBUm}} M?$s))KLL L M Mr3zJThreshold (in bytes) beyond which a buffer should be sent without copying.z[Threshold (in bytes) beyond which an object's buffer should be extracted to avoid pickling.zThe maximum number of items for a container to be introspected for custom serialization. Containers larger than this are pickled outright. rc Ptjdi|||i|_|jt j|_| |j s#t ddSdS)aecreate a Session object Parameters ---------- debug : bool whether to trigger extra debugging statements packer/unpacker : str : 'json', 'pickle' or import_string importstrings for methods to serialize message parts. If just 'json' or 'pickle', predefined JSON and pickle packers will be used. Otherwise, the entire importstring must be used. The functions must accept at least valid JSON input, and output *bytes*. For example, to use msgpack: packer = 'msgpack.packb', unpacker='msgpack.unpackb' pack/unpack : callables You can also set the pack/unpack callables for serialization directly. session : unicode (must be ascii) the ID of this Session object. The default is to generate a new UUID. bsession : bytes The session as bytes username : unicode username added to message headers. The default is to ask the OS. key : bytes The key used to initialize an HMAC signature. If unset, messages will not be signed or checked. signature_scheme : str The message digest scheme. Currently must be of the form 'hmac-HASH', where 'HASH' is a hashing function available in Python's hashlib. The default is 'hmac-sha256'. This is ignored if 'key' is empty. keyfile : filepath The file containing a key. If this is set, `key` will be initialized to the contents of the file. zCMessage signing is disabled. This is insecure and not recommended!Nrc) rr_check_packersrnonerr]getpidpidrr/rwarningrs r2rzSession.__init__sP ""6""" IIbMM  9;; x  LL U       r3c t|}|D]!}t||t||"t |_|j|j|S)aCreate a copy of this Session Useful when connecting multiple times to a given kernel. This prevents a shared digest_history warning about duplicate digests due to multiple connections to IOPub in the same process. .. versionadded:: 5.1 )rtraitssetattrrsetdigest_historyupdate)r~ new_sessionnames r2clonez Session.cloneDsw!d4jjll KKMM < >>r3cp|j}|xjdz c_|jdtjd|S)Nr_) message_countrr]r )r~message_numbers r2rzSession.msg_idXsB+ a,????~???r3c|j|jdddgi} |}n/#t$r"}d|jd|}t ||d}~wwxYwt |t st dt|z |}||ksJn7#t$r*}d|jd |jd |}t ||d}~wwxYwd ti} |}t |d trd }t |dS#t$rfd |_fd|_YdSwxYw)z#check packers for datetime support.arhizpacker 'z(' could not serialize a simple message: Nz,message packed to %r, but bytes are requiredz unpacker 'z'' could not handle output from packer 'z': tz!Shouldn't deserialize to datetimec4t|Sr)r )rOrs r2z(Session._check_packers..s$$|A"7"7r3c|Srrc)rHrs r2rz(Session._check_packers..sFF1IIr3) rr ExceptionrrBr&r5rrrsr) r~msg_listrFrEmsgunpacked msg_datetimerrs @@r2rzSession._check_packers^sy!T# )T(^^FF ) ) )UT[UURSUUCS//q ( ) &%(( \KdSYllZ[[ [ )vf~~Hx''''' ) ) ))T]))[))%&)) S//q (  )VXX  .vdd<0011H(3-22 &9 oo% & & . . .7777DI----DKKKK .s? $ AA  AB C&%C  C$AD&&EErrcDt|j||j|jS)z#Create a header for a message type.)rrrr)r~rs r2rzSession.msg_headers$+x MMMr3Ncontent dict | Noneparentdict[str, t.Any] | Nonermetadatac"i}|||n|}||d<|d|d<|d|d<|int||d<|in||d<|j|d<||d||S)zReturn the nested message dict. This format is different from what is sent over the wire. The serialize/deserialize methods converts this nested message dict to the wire format, which is a list of message parts. Nrrr parent_headerr&r*)rrr*copyr)r~rr&r(rr*r"s r2r"z Session.msgs.4n***&H x(H  ,J%+^rr9O9OO&GI-,,..J    O " "8 , , , r3r!r(c|jdS|j}|D]}|||S)zSign a message with HMAC digest. If no auth, return b''. Parameters ---------- msg_list : list The [p_header,p_parent,p_content] part of the message list. Nr3)rr-r hexdigestr.)r~r!rms r2signz Session.signs\ 9 3 INN    A HHQKKKK{{}}##%%%r3r"relist[bytes] | bytes | None list[bytes]c8|di}||j}nt|tr||}n`t|t rnJt|t r|d}ntdt|z||d||d||d|g}g}t|tr| |n|| || t||}| || ||S)a2Serialize the message components to bytes. This is roughly the inverse of deserialize. The serialize/deserialize methods work with full message lists, whereas pack/unpack work with the individual message parts in the message list. Parameters ---------- msg : dict or Message The next message dict as returned by the self.msg method. Returns ------- msg_list : list The list of bytes objects to be sent with the format:: [ident1, ident2, ..., DELIM, HMAC, p_header, p_parent, p_metadata, p_content, buffer1, buffer2, ...] In this list, the ``p_*`` entities are the packed or serialized versions, so if JSON is used, these are utf8 encoded JSON strings. r&Nr%zContent incorrect type: %srr,r*)getrr&r'rr5r+r.rArr(extendappendDELIMr1)r~r"rer& real_messageto_send signatures r2 serializezSession.serializesy6'')R(( ?iGG  & & Jii((GG  ' ' J   % % JnnV,,GG84==HII I IIc(m $ $ IIc/* + + IIc*o & &    eT " " " NN5 ! ! ! !   NN5 ! ! !uIIl++ y!!!|$$$r3stream*zmq.sugar.socket.Socket | ZMQStream | None msg_or_typedict[str, t.Any] | strbytes | list[bytes] | Nonebufferslist[bytes] | Nonetrackrc t|tjsd}t|tjjr(|Jtj|j}t|t tfr|} |p| dg}n| ||||| } |j r@tj |j kr$td| dS|gn|}t!|D]}\} } t| t"r| } n5 t#| } n$#t$$r}d}t%||d}~wwxYwt'| dr| jst+d| | fz~|jrt/| |j} || |}||t5d |D}||jk}|r|r|r|s||dd }n(|rt:}||| nt:}|jrz Session.send..Vs///!s1vv///r3T)r-rDr-tracker) r&rSocketasyncioshadow underlyingrr'r5r" check_pidr]r r rr r- memoryviewrAhasattrrFrB adapt_versionrr<r6maxcopy_thresholdsend_multipartDONEdebugr)r~r=r?r&r(rerBrDrr*r"idxr`viewrEemsgr:longestr-rKs r2sendz Session.sendsn&#*-- E fck0 1 1 :%%%Z&&v'899F kGT? 3 3 C7B!7!7GG((! C > bikkTX55 LL !SUX Y Y Y4""W!'** R RHC#z** 11%c??DD 111MD#D//q01 t\** R4? R !CsCj!PQQQ   1T/00C..e,,w//w///00,,  g %  ++G%t+LLGG  G  ! !' ! 5 5 5 5G : # M#    M' " " " M' " " " I s/D?? E  EE zmq.sugar.socket.Socketflagsintr-cg}t|tr|g}||||t|||dd||t|t jjr$t j |j }| |||dS)a0Send a raw message via ident path. This method is used to send a already serialized message. Parameters ---------- stream : ZMQStream or Socket The ZMQ stream or socket to use for sending the message. msg_list : list The serialized list of messages to send. This only includes the [p_header,p_parent,p_metadata,p_content,buffer1,buffer2,...] portion of the message. ident : ident or list A single ident or a list of idents to use in sending. Nrr\rJ) r&r5r6r7r8r1rrMrLrNrOrV)r~r=r!r_r-rer:s r2send_rawzSession.send_rawls. eU # # GE   NN5 ! ! !utyy!A#//000x   fck0 1 1 :Z&&v'899Fgu488888r3socketmode2tuple[list[bytes] | None, dict[str, t.Any] | None]ct|tr|j}t|tjjr$tj|j} |||}n3#tj $r!}|j tj krYd}~dSd}~wwxYw| ||\}} || |||fS#t$r}|d}~wwxYw)aYReceive and unpack a message. Parameters ---------- socket : ZMQStream or Socket The socket or stream to use in receiving. Returns ------- [idents], msg [idents] is a list of idents and msg is a nested message dict of same format as self.msg returns. rJN)NN)r&r-)r&rrcrrMrLrNrOrecv_multipartZMQErrorerrnoEAGAINfeed_identities deserializer )r~rcrdr&r-r!rEidentss r2recvz Session.recvs( fi ( ( #]F fck0 1 1 :Z&&v'899F ,,T,==HH|   w#*$$"zzzzz   //$?? 4++HgD+QQQ Q   G s6!A99B)B$#B$$B)C C1*C,,C1list[bytes] | list[zmq.Message]3tuple[list[bytes], list[bytes] | list[zmq.Message]]c|r[tjtjt|}|t }|d|||dzdfStjtjt j|}d}t|D]\}}|jt krd}n|rd}t||d|||dzd}}d|D|fS)aeSplit the identities from the rest of the message. Feed until DELIM is reached, then return the prefix as idents and remainder as msg_list. This is easily broken by setting an IDENT to DELIM, but that would be silly. Parameters ---------- msg_list : a list of Message or bytes objects The message to be split. copy : bool flag determining whether the arguments are bytes or Messages Returns ------- (idents, msg_list) : two lists idents will always be a list of bytes, each of which is a ZMQ identity. msg_list will be a list of bytes or zmq.Messages of the form [HMAC,p_header,p_parent,p_content,buffer1,buffer2,...] and should be unpackable/unserializable via self.deserialize at this point. NrTFzDELIM not in msg_listc6g|]}t|jSrcr5)rYr0s r2rIz+Session.feed_identities..s 333qE!'NN333r3) rcastListr5indexr8rrr-rB)r~r!r-rYfailedr0r"rms r2rkzSession.feed_identitiess2  >vafUmX66H..''CDSD>8C!GII#66 6vafS[18< > >  % % ' ' ' ' ' ? >r3cPt|j}tt|dz||jz }||krt |_dSt jtt|j|}|j |dS)z_cull the digest history Removes a randomly selected 10% of the digest history N) rHrrTr`ryrrandomsampletuplesorteddifference_update)r~r n_to_cullto_culls r2r{zSession._cull_digest_historys d)**GrM**Gd6N,NOO   "%%%D  F-fT-@&A&A B BINN --g66666r3chd}i}|sztjtjtj|}d|d|D}tjtjt |}|||dz}tjtjt |}|j|d}|sd}t|||jvrtd|z|r| || |dd} t|| sd|z}t|t||ksd |z}t|||d} t| |d <| d |d <| d |d <t||d |d<||d|d<|r||d|d<n |d|d<d|ddD} | rP| djCtjtjtj|}d|ddD} | |d<|jrt%j|t'|S)aUnserialize a msg_list to a nested message dict. This is roughly the inverse of serialize. The serialize/deserialize methods work with full message lists, whereas pack/unpack work with the individual message parts in the message list. Parameters ---------- msg_list : list of bytes or Message objects The list of message parts of the form [HMAC,p_header,p_parent, p_metadata,p_content,buffer1,buffer2,...]. content : bool (True) Whether to unpack the content dict (True), or leave it packed (False). copy : bool (True) Whether msg_list contains bytes (True) or the non-copying Message objects in each place (False). Returns ------- msg : dict The nested message dict with top-level keys [header, parent_header, content, buffers]. The buffers are returned as memoryviews. c6g|]}t|jSrcrs)rYr"s r2rIz'Session.deserialize..!s"!P!P!Ps% "2"2!P!P!Pr3NrzUnsigned MessagezDuplicate Signature: %rrzInvalid Signature: %rz1malformed message, must have at least %i elementsrrrr<r,r*r\r&c,g|]}t|Src)rQrYbs r2rIz'Session.deserialize..@s777Q:a==777r3cPg|]#}tt|j$Src)rQr5rs r2rIz'Session.deserialize..Ds(HHHaz%..11HHHr3rB)rrtrurrr5rrBrr|r1rrHrArrshaperXrr) r~r!r&r-minlenmessagemsg_list_beginningr;r"checkrrBs r2rlzSession.deserializes< >vafS[18<O!P!P!P vafUmX66H)HVWW,==H6!&-22 9   I &( oo%D/// !:Y!FGGG ,  +++IIhqsm,,E!)U33 &- 9 oo%8}}&&ENCC.. 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" "F WXMMMMW  YN w W N222222h$M @@@X@ %.%.%.%.NNNNN $*.*.,0 4 & & & &$-1>>>>>H,0*.,0&**.,0xxxxx|,0 #9#9#9#9#9PK )))))XGK(>(>(>(>(>T ( ( ( ( 7 7 7 7  KKKKKZ11111111r3)r!r"r#r")r!r"r#r5)rHrIr#r")rOr"r#r5rr)rkr"r#rl)r#r) rr+rr+rr+rrr#r)rrr#r)Qr __future__rrrr?rzr]rQrrtypingrrCbinasciirrrr zmq.asynciortornado.ioloopr traitletsr r r r r rrrrrrrtraitlets.config.configurablerr traitlets.logrtraitlets.utils.importstringrzmq.eventloop.zmqstreamr_versionradapterrjsonutilrrrr DEFAULT_PROTOCOLrRrrr*rrrGrNrSrMrrrr8MessageTrackerrWrardsession_aliases session_flagsrorsrurrrrhrcr3r2rs  #"""""  ''''''''!!!!!!                            LKKKKKKK$$$$$$444444------&&&&&&KKKKKKKKKKKK)l    (   8:::: , s L L L L$$$$    LLNNr::;  CB//0*    % % % %-----(---B        >    (f 1f 1f 1f 1f 1lf 1f 1f 1f 1f 1r3