bluetooth - Unable to establish connection using Windows 7 and C# -


intro

i getting follow error: system.argumentexception unhandled

hresult=-2147024809

message=the iasyncresult object not returned corresponding asynchronous method on class.

parameter name: asyncresult

source=system

paramname=asyncresult

stacktrace:

at system.net.sockets.socket.endconnect(iasyncresult asyncresult)    @ inthehand.net.bluetooth.msft.socketbluetoothclient.endconnect(iasyncresult asyncresult)    @ inthehand.net.sockets.bluetoothclient.endconnect(iasyncresult asyncresult)    @ myapp_1.frmmt.connectmethod(iasyncresult balanceasyncresult) in c:\xxx\source\workspaces\mt\mt_1\mtx_1\mty_1\form1.cs:line 194    @ system.net.lazyasyncresult.complete(intptr usertoken)    @ system.net.contextawareresult.completecallback(object state)    @ system.threading.executioncontext.runinternal(executioncontext executioncontext, contextcallback callback, object state, boolean preservesyncctx)    @ system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state, boolean preservesyncctx)    @ system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state)    @ system.net.contextawareresult.complete(intptr usertoken)    @ system.net.lazyasyncresult.protectedinvokecallback(object result, intptr usertoken)    @ system.net.sockets.socket.connectcallback()    @ system.net.sockets.socket.registeredwaitcallback(object state, boolean timedout)    @ system.threading._threadpoolwaitortimercallback.performwaitortimercallback(object state, boolean timedout)

connection:

 bluetoothclient myclient = new bluetoothclient();  char[] pinchar = new char[] { 'm', 'y', 'p', 'i', 'n' }; string pinstring = new string(pinchar); comments.appendtext("device address: " + device.deviceaddress + newline); ispaired = bluetoothsecurity.pairrequest(device.deviceaddress, pinstring); comments.appendtext("ispaired?: " + ispaired.tostring() + newline);  // true! comments.appendtext("isauthenticated?: " + device.authenticated + newline);  // true! if (ispaired) {      if (device.authenticated)      {         //asyncconnection method         btclient.beginconnect(device.deviceaddress, bluetoothservice.serialport, new asynccallback(connectmethod), device);         comments.appendtext("balance connected? : " + btclient.connected + newline); // false!      } }             else             {                 // pairing failed                 comments.appendtext("balance pairing failed :( (" + pinstring + ")" + newline);  // never here!             }

*** fyi - have tried connecting via endpoint using mac address , guid.

asynch method:

private void connectmethod(iasyncresult myasyncresult) {     messagebox.show(myasyncresult.tostring());  // show off method      if (myasyncresult.iscompleted)  // true!     {         //  error thrown         myclient.endconnect(balanceasyncresult);  // error here on line 194         // stream mystream = myclient.getstream();  // fails same error         messagebox.show("connected? : " + myclient.connected);  // never here or if myclient.connected false!      } }

possible related info:

manufacturer says:

bluetooth version: 1.2

protocols: l2cap, sdp, rfcomm

bluetooth profile: generic access, service discovery, serial port profile (spp)

role of bt option: client or server peripherals

any appreciated!


-

Comments

Post a Comment

Popular posts from this blog

css - SVG using textPath a symbol not rendering in Firefox -

using textpath within symbol doesn't render in firefox. renders fine in latest chrome , ie, when try reference symbol, svg text doesn't render in firefox (37.0.1) - first box appears empty. code below (no external dependencies), there should 2 boxes word test flowing vertically in centre of each. edit: thought issue somehow involved flexbox layout, until paul pointed out issue exists without flexbox layout. the html is: <div> <svg id="not_working" viewbox="0 0 250 1200" preserveaspectratio="xmidymid meet"> <symbol id="test_symbol1" preserveaspectratio="xmidymid meet" viewbox="0 0 250 1200"> <path id="test_symbol_path" d="m 100 1200 l 100 0" /> <text font-size="100" fill="red"> <textpath text-anchor="middle" startoffset="50%" xlink:href="#test_symbol_path...
Read more

Java 8 + Maven Javadoc plugin: Error fetching URL -

i attempting generate javadoc links javadoc dependencies. have tried various means generate javadoc not produce qualified class names references classes dependencies. wanted links java doc simplified class names. however, java api classnames, no links , have qualified class names. working java 8. have following configuration: <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-javadoc-plugin</artifactid> <version>2.10.2</version> <configuration> <reportoutputdirectory>${project.basedir}/target</reportoutputdirectory> <destdir>javadoc</destdir> <windowtitle>epiphany</windowtitle> <doctitle>epiphany</doctitle> <show>private</show> <detectlinks>false</detectlinks> <detectoffline...
Read more

order - Notification for user in user account opencart -

thanks helps or points me in right direction. i want show pending notification user in account page after login. notification show when order status pending. after changing other status admin remove notification. this notification show like: your order id: order status: , [ button custom url] if multiple order show multiple order id. open cart version 1.5.6.3 custom theme. $this->load->model('account/order'); $results = $this->model_account_order->getorders(); foreach ($results $result) { $product_total = $this->model_account_order->gettotalorderproductsbyorderid($result['order_id']); $voucher_total = $this->model_account_order->gettotalordervouchersbyorderid($result['order_id']); if( $result['status'] =! 5){ // 5 order status means completed $this->data['orders'][] = array( 'order_id' => $result['order_id'], ...
Read more