<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr">My team and i are trying to integrate Avahi via DBUS in Go (golang.org). I have read through the documentation and i have worked with the python bindings as a guide, we have basic browsing working, however we seem to be running in to a few unexpected issues.<br></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr"><br></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr">The browser (http://avahi.org/download/ServiceBrowser.introspect.xml) only seems to signal back on its first run. This makes sense for efficiencies sake, however in cases of things such as unit tests, this means that the code that tests various lookups fail on subsequent runs. Given that we are following a light form of TDD this is becomming a real issue. </div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr"><br></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr">Is there anyway to clear the Browser's cache or make it repeat values? Or perhaps have some way to know when a session is over and the next request will require a full update, not just a differential? Code example at EOF.</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr"><br></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr">Thanks!</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr"><br></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr">Glenn Martin</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr"><br></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr"><br></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr">// The following is a messy excerpt from the code we are presently using to test. Many of the constants are stolen from the python bindings found here: <span style="color: rgb(128, 128, 128); font-style: italic; font-family: 'Eco Coding'; font-size: 12pt; white-space: pre-wrap; background-color: rgb(216, 213, 185);" id="yui_3_16_0_1_1441131540137_4343" class=""><a href="http://git.0pointer.net/avahi.git/tree/avahi-python/avahi/__init__.py" id="yui_3_16_0_1_1441131540137_4341">http://git.0pointer.net/avahi.git/tree/avahi-python/avahi/__init__.py</a></span></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4085"> </span>sysbus, err := dbus.SystemBusPrivate()</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4088"> </span>if err != nil {</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4091"> </span>return err</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4094"> </span>}</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4097" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4100"> </span>defer sysbus.Close()</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4103" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4106"> </span>if err = sysbus.Auth(nil); err != nil {</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4109"> </span>return err</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4112"> </span>}</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4115"> </span>if err = sysbus.Hello(); err != nil {</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4118"> </span>return err</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4121"> </span>}</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4124" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4127"> </span>logs.Infof("SysBus => %+ v", sysbus)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4130" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4133"> </span>/* Lets get our Service object */</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4136"> </span>avahiObject := sysbus.Object(DBUS_NAME, DBUS_PATH_SERVER)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4139" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4142"> </span>logs.Infof("Avahi Object => %+v", avahiObject)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4145" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4148"> </span>/* Were gonna need this for resolution later. */</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4151"> </span>var items []serviceBrowserRecord = []serviceBrowserRecord{}</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4154" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4157"> </span>/* Now lets listen to our ServiceBrowser and Listen in to its wisdom */</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4160"> </span>c := avahiObject.Call("ServiceBrowserNew", 0, IF_UNSPEC, PROTO_UNSPEC, service, "local", uint32(0))</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4163"> </span>if c.Err != nil {</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4166"> </span>panic(c.Err)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4169"> </span>}</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4172"> </span>logs.Infof("Browser Object Response => %+v", c)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4175" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4178"> </span>browserObject := sysbus.Object(DBUS_INTERFACE_SERVICE_BROWSER, c.Body[0].(dbus.ObjectPath))</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4181" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4184"> </span>defer browserObject.Call("Free", 0)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4187" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4190"> </span>logs.Infof("Browser Object => %+v", browserObject)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4193" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4196"> </span>browserMatchingRule := fmt.Sprintf("type='signal',path='%s',interface='%s',sender='%s'", c.Body[0].(dbus.ObjectPath), DBUS_INTERFACE_SERVICE_BROWSER, DBUS_INTERFACE_SERVICE_BROWSER)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4199" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4202"> </span>sysbus.BusObject().Call(DBUS_OFD_ADD_MATCH, 0, browserMatchingRule)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4205" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4208"> </span>ch := make(chan *dbus.Signal, 10)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4211" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4214"> </span>sysbus.Signal(ch)</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><br id="yui_3_16_0_1_1441131540137_4217" class=""></div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4220"> </span>breakIt := false</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4223"> </span>for v := range ch {</div><div id="yui_3_16_0_1_1441131540137_3709" dir="ltr" class=""><span class="" style="white-space:pre-wrap;" id="yui_3_16_0_1_1441131540137_4226"> </span>logs.Infof("SIG => %+v",v)</div><div dir="ltr" id="yui_3_16_0_1_1441131540137_4228" class="">}</div></div></body></html>