Mercurial > libervia-backend

annotate src/plugins/plugin_exp_pipe.py @ 1723:5632c5350296

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core: avoid initialisation blocking when a long callback is added to backend.initialised (could prevent sessions starting)
author Goffi <goffi@goffi.org>
date Mon, 07 Dec 2015 13:10:44 +0100
parents dbd7c79aab2b
children d17772b0fe22
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for managing pipes (experimental)
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 from sat.core.i18n import _, D_
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21 from sat.core.constants import Const as C
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22 from sat.core.log import getLogger
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23 log = getLogger(__name__)
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24 from sat.tools import xml_tools
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25 from twisted.words.xish import domish
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26 from twisted.words.protocols.jabber import jid
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27 from twisted.internet import defer
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28
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29 NS_PIPE = 'http://salut-a-toi.org/protocol/pipe'
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30 SECURITY_LIMIT=30
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31
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32 PLUGIN_INFO = {
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33 "name": "Pipe Plugin",
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34 "import_name": "EXP-PIPE",
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35 "type": "EXP",
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36 "protocols": ["EXP-PIPE"],
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37 "dependencies": ["XEP-0166"],
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38 "main": "Exp_Pipe",
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39 "handler": "no",
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40 "description": _("""Jingle Pipe Transfer experimental plugin""")
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41 }
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42
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43 CONFIRM = D_(u"{peer} wants to send you a pipe stream, do you accept ?")
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44 CONFIRM_TITLE = D_(u"Pipe stream")
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45
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46 class Exp_Pipe(object):
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47 """This non standard jingle application works with named pipes"""
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48
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49 def __init__(self, host):
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50 log.info(_("Plugin Pipe initialization"))
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51 self.host = host
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52 self._j = host.plugins["XEP-0166"] # shortcut to access jingle
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53 self._j.registerApplication(NS_PIPE, self)
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54 host.bridge.addMethod("pipeOut", ".plugin", in_sign='sss', out_sign='', method=self._pipeOut)
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55
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56 # jingle callbacks
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57
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58 def _pipeOut(self, peer_jid_s, filepath, profile_key=C.PROF_KEY_NONE):
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59 profile = self.host.memory.getProfileName(profile_key)
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60 self.pipeOut(jid.JID(peer_jid_s), filepath, profile)
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61
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62 def pipeOut(self, peer_jid, filepath, profile):
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63 """send a file using EXP-PIPE
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64
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65 @param peer_jid(jid.JID): recipient
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66 @param filepath(unicode): absolute path to the named pipe to send
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67 @param profile_key: %(doc_profile_key)s
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68 @return: an unique id to identify the transfer
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69 """
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70 self._j.initiate(peer_jid,
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71 [{'app_ns': NS_PIPE,
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72 'senders': self._j.ROLE_INITIATOR,
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73 'app_kwargs': {'filepath': filepath,
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74 },
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75 }],
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76 profile=profile)
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77
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78 def jingleSessionInit(self, session, content_name, filepath, profile=C.PROF_KEY_NONE):
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79 content_data = session['contents'][content_name]
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80 application_data = content_data['application_data']
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81 assert 'file_path' not in application_data
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82 application_data['file_path'] = filepath
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83 desc_elt = domish.Element((NS_PIPE, 'description'))
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84 return desc_elt
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85
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86 def jingleRequestConfirmation(self, action, session, content_name, desc_elt, profile):
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87 """This method request confirmation for a jingle session"""
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88 content_data = session['contents'][content_name]
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89 if content_data['senders'] not in (self._j.ROLE_INITIATOR, self._j.ROLE_RESPONDER):
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90 log.warning(u"Bad sender, assuming initiator")
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91 content_data['senders'] = self._j.ROLE_INITIATOR
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92
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93 def gotConfirmation(data):
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94 if data.get('cancelled', False):
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95 return False
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96 application_data = content_data['application_data']
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97 dest_path = application_data['file_path'] = data['path']
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98 content_data['file_obj'] = open(dest_path, 'w+')
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99 finished_d = content_data['finished_d'] = defer.Deferred()
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100 args = [session, content_name, content_data, profile]
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101 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args)
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102 return True
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103
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104 d = xml_tools.deferDialog(self.host,
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105 _(CONFIRM).format(peer=session['peer_jid'].full()),
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
106 _(CONFIRM_TITLE),
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
107 type_=C.XMLUI_DIALOG_FILE,
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
108 options={C.XMLUI_DATA_FILETYPE: C.XMLUI_DATA_FILETYPE_DIR},
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
109 action_extra={'meta_from_jid': session['peer_jid'].full(),
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
110 'meta_type': "PIPE",
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
111 },
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
112 security_limit=SECURITY_LIMIT,
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
113 profile=profile)
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
114
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
115 d.addCallback(gotConfirmation)
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
116 return d
401
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
117
1669
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
118 def jingleHandler(self, action, session, content_name, desc_elt, profile):
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
119 content_data = session['contents'][content_name]
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
120 application_data = content_data['application_data']
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
121 if action in (self._j.A_ACCEPTED_ACK, self._j.A_SESSION_INITIATE):
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
122 pass
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
123 elif action == self._j.A_SESSION_ACCEPT:
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
124 assert not 'file_obj' in content_data
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
125 filepath = application_data['file_path']
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
126 content_data['file_obj'] = open(filepath, 'r') # XXX: we have to be sure that filepath is well opened, as reading can block it
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
127 finished_d = content_data['finished_d'] = defer.Deferred()
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
128 args = [session, content_name, content_data, profile]
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
129 finished_d.addCallbacks(self._finishedCb, self._finishedEb, args, None, args)
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
130 else:
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
131 log.warning(u"FIXME: unmanaged action {}".format(action))
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
132 return desc_elt
401
b2caa2615c4c jp roster name manegement + Pipe transfer
Goffi <goffi@goffi.org>
parents:
diff changeset
133
1669
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
134 def _finishedCb(self, dummy, session, content_name, content_data, profile):
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
135 log.info(u"Pipe transfer completed")
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
136 self._j.contentTerminate(session, content_name, profile=profile)
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
137 content_data['file_obj'].close()
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
138
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
139 def _finishedEb(self, failure, session, content_name, content_data, profile):
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
140 log.warning(u"Error while streaming pipe: {}".format(failure))
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
141 content_data['file_obj'].close()
697effba0310 plugin pipe: rewritten plugin as a jingle application. The current implentation can, in some cases, block the backend, and is experimental only. Improvments are needed in the future.
Goffi <goffi@goffi.org>
parents: 1409
diff changeset
142 self._j.contentTerminate(session, content_name, reason=self._j.REASON_FAILED_TRANSPORT, profile=profile)