wake on lan - Writing Magic Packet in C++ -


i want send magic packet wake specific pc(specific mac address) connected mbed through lan . have found following code in code project.

my mac address : 00-c0-9f-bd-e4-3a (sample).....how can declare , fill in array.* have little knowledge in programming. please ignore mistake or miss interpretation.

byte magicp[102];

...

//fill in magic packet 102 bytes of data  //header  //fill 6 bytes 0xff  (int i=0;i<6;i++)     magicp[i] = 0xff; //first 6 bytes (these must repeated!!)  //fill bytes 6-12  (i=0;i<6;i++) {     //get 2 charachters mac address , convert int fill      //magic packet      magicp[i+6] = hexstrtoint(macaddr.mid(i*2,2)); }  //fill remaining 90 bytes (15 time repeat)  (i=0;i<15;i++) memcpy(&magicp[(i+2)*6],&magicp[6],6);

...

here have found code: http://www.codeproject.com/kb/ip/wol.aspx

i'm afraid not providing enough of code give unambiguous answer (a link might help), think don't have fill in magicp[] - code doing you. appears have provide hexadecimal mac address input in macaddr variable, string of 12 hexadecimal digits (e.g. "023fdca889fa").

edit: after reading link, consider hunch confirmed. code snippet shows how magicp[] array (which holds packet payload) constructed based on provided macaddr, in order illustrate theoretical explanation preceding it. somewhere there needs definition std::string macaddr; enter mac address, , passed calculation method.

i suggest download full source linked project (or other open wol program), give better understanding on how pieces fit together.


Comments

Post a Comment

Popular posts from this blog

asp.net - repeatedly call AddImageUrl(url) to assemble pdf document -

i'm using abcpdf , i'm curious if can recursively call addimageurl() function assemble pdf document compile multiple urls? something like: int pagecount = 0; int theid = thedoc.addimageurl("http://stackoverflow.com/search?q=abcpdf+footer+page+x+out+of+", true, 0, true); //assemble document while (thedoc.chainable(theid)) { thedoc.page = thedoc.addpage(); theid = thedoc.addimagetochain(theid); } pagecount = thedoc.pagecount; console.writeline("1 document page count:" + pagecount); //flatten document (int = 1; <= pagecount; i++) { thedoc.pagenumber = i; thedoc.flatten(); } //now try again theid = thedoc.addimageurl("http://stackoverflow.com/questions/1980890/pdf-report-generation", true, 0, true); //assemble document while (thedoc.chainable(theid)) { thedoc.page = thedoc.addpage(); theid = thedoc.addimagetoc...
Read more

java - Android recognize cell phone with keyboard or not? -

in android app, want detect user's device if device has keyboard(like motorola milestone) , show corresponding user interface. guys know how that? ! regards justicepenny http://developer.android.com/reference/android/content/res/configuration.html public int keyboard the kind of keyboard attached device. 1 of: keyboard_nokeys, keyboard_qwerty, keyboard_12key. that's it!
Read more

iphone - How would you achieve a LED Scrolling effect? -

how achieve led scrolling effect example below? led sign - led ticker emulator iphone , ipad http://img.skitch.com/20101201-rsfh4p1bajb1wp94k466pdpiuj.preview.jpg sometimes remunerates comment in other posts :) have put code you, should implement font '8pin matrix' realistic feeling. uilabel *label; - (void)viewdidload { [super viewdidload]; label = [[uilabel alloc]initwithframe:cgrectmake(10, 50, 300, 20)]; label.font = [uifont fontwithname:@"courier-bold" size:16.0]; label.backgroundcolor = [uicolor blackcolor]; label.textcolor = [uicolor greencolor]; label.linebreakmode = uilinebreakmodecharacterwrap; // otherwise "…" label.text = @"this led text scrolled "; // blanks space between [self.view addsubview:label]; [nstimer scheduledtimerwithtimeinterval:0.12f target:self selector:@selector(scrolllabel) use...
Read more