vb.net - cannot receive UDP Packet from microcontroller -



vb.net - cannot receive UDP Packet from microcontroller -

i'm working on udp communication pc <-> arm lm3s6965 (luminary) through ethernet. on pc there vb.net application simulates udp server/client.

when packet sent pc arm lm3s6965, packet received without errors, when arm lm3s6965 sends udp packet pc, packet lost somewhere (the application doesn’t receive it).

the unusual thing wireshark captures these packets coming pc , seems valid.

turning off firewall in windows did not help. know topic might wrong forum, can explain why wireshark captures these packets, application doesn’t? arm lm3s6965 (192.168.0.100), pc (192.168.0.116), sending , receiving goes through port number 3040, , sending broadcast message vb.net application received arm lm3s6965 micro controller.

here vb.net code:

public const mnport int16 = 3040 'port number send/recieve info on public const msbroadcastaddress string = "255.255.255.255" 'sends info local listening clients, send info on wan you'll need come in public (external) ip address of other client public udpreceivingclient udpclient 'client handling incoming info public udpsendingclient udpclient 'client sending info public receivingthread thread 'create separate thread hear incoming data, helps prevent form freezing public mbiclosing boolean = false 'used close clients if form closing public sub initializesender() udpsendingclient = new udpclient(msbroadcastaddress, mnport) udpsendingclient.enablebroadcast = true end sub public sub initializereceiver() udpreceivingclient = new udpclient(mnport) 'dim start threadstart = new threadstart(addressof mt_receiver) 'receivingthread = new thread(start) 'receivingthread.isbackground = true 'receivingthread.start() end sub public sub mt_send_udp(byval lbtxbuffer() byte) seek udpsendingclient.send(lbtxbuffer, lbtxbuffer.length) grab ex exception msgbox(ex.tostring) end seek seek udpreceivingclient.beginreceive(addressof mt_rx_callback, nothing) grab ex exception msgbox(ex.tostring) end seek end sub public sub mt_rx_callback(byval ir iasyncresult) dim endpoint ipendpoint = new ipendpoint(ipaddress.any, 3040) dim lbdata() byte dim llret uint16 if mbiclosing = false llret = udpreceivingclient.available lbdata = udpreceivingclient.endreceive(ir, endpoint) if llret > 0 mt_validate_msg(lbdata) end if udpreceivingclient.beginreceive(addressof mt_rx_callback, nothing) end if end sub private sub frmsearchudp_formclosing(byval sender object, byval e system.windows.forms.formclosingeventargs) handles me.formclosing mbiclosing = true udpreceivingclient.close() udpsendingclient.close() frmmain.timer.enabled = true end sub private sub frmsearchudp_load(byval sender object, byval e system.eventargs) handles me.load initializesender() initializereceiver() end sub

more comment, it's long ...

no196: 42.430628 192.168.0.168 -> 255.255.255.255 (from pc hardware) udp ... source port: 63162 (63162) destination port: tomato-springs (3040)

this looks nice , works obviously, hardware send response.

no197: 42.431017 192.168.0.100 -> 255.255.255.255 (from hardware pc) source port: tomato-springs (3040) destination port: 63162 (63162)

why pc should receive packet? destination port 63162 hear port 3040.

vb.net embedded microcontroller udpclient

-

Comments

Post a Comment

Popular posts from this blog

formatting - SAS SQL Datepart function returning odd values -

formatting - SAS SQL Datepart function returning odd values - i'm having massive problem project can't seem right. i'm trying modify info variable in datetime format. first info 30mar12:00:00:00. i've been advised utilize code below returns value 30mar60:5:30:00. want date component , have no thought how info got exported in format wasn't in microsoft access. i've tried several mods code 1 time again comes blank or sends error message. proc sql; update dataset set date = datepart(date); quit; any advice appreciated. i'm guessing variable date numeric , formatted datetime. 1 time you've carried out conversion, alter format date9. sas datetime value number of seconds since 01 jan 1960, whereas dates number of days since 01 jan 1960. both stored numbers, using right format display value key. illustration below. data _null_; a='30mar12:00:00:00'dt; b=datepart(a); c=b; format b datetime. c date9.; set b c; run; ...
Read more

c++ - Apple Mach-O Linker Error(Duplicate Symbols For Architecture armv7) -

c++ - Apple Mach-O Linker Error(Duplicate Symbols For Architecture armv7) - here error: duplicate symbol _objc_metaclass_$_bfapplinkreturntorefererview in: /users/user/documents/facebooksdk/facebooksdk.framework/facebooksdk(bfapplinkreturntorefererview.o) /users/user/desktop/project/project/project/assets/facebook/editor/ios/facebooksdk/facebooksdk.a(bfapplinkreturntorefererview.o) ld: 889 duplicate symbols architecture armv7 clang: error: linker command failed exit code 1 (use -v see invocation) i have searched find solution of error couldn't. there tons of similar error this, 1 hasn't been asked yet. problem shows when add together "-objc" "other linker flags". need add together utilize admob service. problem? how can solve this? i faced same issue while integrating facebook-ios-sdk. because using 3rd party library had bolts.framework linked against it. solution found incorporate facebook-ios-sdk source code hosted on github. ...
Read more

php - Yii 2: Unable to find a class into the extension 'yii2-admin' -

php - Yii 2: Unable to find a class into the extension 'yii2-admin' - extension's github project: https://github.com/mdmsoft/yii2-admin i'm using advanced template of yii2, i've backend , frontend , common folders advanced folder. the advanced folder on same level of vendor folder. i've others extensions , working then installed yii2-admin composer php composer.phar require mdmsoft/yii2-admin "*" installation worked well. into vendor folder i've mdmsoft folder yii2-admin subfolder it. this actual content of v endor/yiisoft/extensions.php (modified composer installation, haven't manually touched it) <?php $vendordir = dirname(__dir__); homecoming array ( 'yiisoft/yii2-jui' => array ( 'name' => 'yiisoft/yii2-jui', 'version' => '2.0.0.0', 'alias' => array ( '@yii/jui' => $vendordir . '/yiisoft/yii2-jui', ...
Read more