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Diffstat (limited to 'source/namedbresp.doc')
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diff --git a/source/namedbresp.doc b/source/namedbresp.doc deleted file mode 100644 index a54c0702758..00000000000 --- a/source/namedbresp.doc +++ /dev/null @@ -1,100 +0,0 @@ -/* - Unix SMB/Netbios documentation. - Version 0.1 - Copyright (C) Luke Leighton Andrew Tridgell 1996 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - - Document name: namedbresp.doc - - Revision History: - - 0.0 - 02jul96 : lkcl@pires.co.uk - created - - 0.1 - 22jul96 Andrew.Tridgell@anu.edu.au - tridge's comments on first revision -*/ - -module namedbresp deals with the maintenance of the list of expected -responses - creating, finding and removal. - -module nameresp deals with the initial transmission, re-transmission -and time-out of netbios response records. - - -/************************************************************************* - find_response_record() - *************************************************************************/ - -this function is responsible for matching the unique response transaction -id with an expected response record. as a side-effect of this search, -it will find the subnet (or the WINS pseudo-subnet) that samba expected -the response to come from. - - -/************************************************************************* - make_response_queue_record() - *************************************************************************/ - -this function is responsible for creating a response record, which will -be queued awaiting a response. - -the number of retries is set to 3, and the retry period set to 1 second. -if no response is received, then the packet is re-transmitted, which is -why so much information is stored in the response record. - -the number of expected responses queued is kept, so listen_for_packets() -knows it must time-out after 1 second if one or more responses are -expected. - - -/************************************************************************* - remove_response_record() - *************************************************************************/ - -this function is responsible for removing a response record from the -expected response queue. the number of expected responses is decreased. - - -/************************************************************************* - add_response_record() - *************************************************************************/ - -this function is responsible for adding the response record created by -make_response_queue_record() into the appropriate response record queue. - - ------------------ -NOTE FROM TRIDGE: - -namedbresp.c is interesting because it implements a novel way of -getting most of the advantages of a multi-threaded nmbd daemon without -the portability problems. - -The NBT specs (rfc1001/1002) talk about the 16 bit IDs in the packets -as being used to ensure that packets are unique, and to stop packets -from being confused. It suggests incrementing the ID by 1 each time. - -Instead Luke uses these IDs to identify individual threads of control -in nmbd. So when nmbd sends out a NBT packet as part of some complex -processing, it adds to a linked list the information required to -continue the processing when the reply comes in (or it times -out). When a reply arrives this list can be searched to find the -matching query and the next step in the processing can be carried out. - -This is really good stuff, and allows for much more complex behaviour -than was possible with the old nmbd. ----------------- |