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  • How to test DNS glue record?

    - by Sunnz
    Hello I have just set up a DNS server for my domain example.org with 2 name servers ns1.example.org and ns2.example.org. I have attempted to set up a glue record for ns1 and ns2 at my registrar. It seems to work for now when I do a dig example.org but when I do a whois example.org it lists ns1.example.org and ns2.example.org but not their IP address which should be set up as a glue record. So I am wondering how do I check for the existence of a glue record? Do I do it with whois? I have seen .com and .net whois records that have both the domain name as well as the IP address for the name servers, is .org different? What's the proper way to test this? Thanks.

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  • Make IP Address point to webroot instead of virtual hosts' documentroot

    - by Reuben L.
    I used to have a one-to-one domain name and IP. Recently I've paid for a second domain name and decided to host it on the same box and IP. As such, I added virtualhosts to point each domain name to a different document root (i.e. /var/www/webbie1 and /var/www/webbie2). The question I have is, can I still make the IP, e.g. http://XXX.XXX.XXX.XXX, point to the webroot, i.e. /var/www/? If so, how do I go about doing it? For a fuller picture, the box is on an Ubuntu server OS and I'm using apache2 as the app server. the changes I made to enable to virtual hosts were in the apache2.conf file with the <VirtualHost [IP address]> ... </VirtualHost> tags. Thanks.

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  • Ubuntu VPN Server (PPTPD) Configuration - Pass Traffic to Internet

    - by SnAzBaZ
    I am trying to configure PPTPD on my Ubuntu box to pass all VPN traffic through to it's internet connection, so I essentially want it to work like a Proxy. I think the problem is that no default gateway is being assigned to my PPTP client (Windows 7). I can connect to the VPN fine, I get an IP address and DNS servers but no default gateway. Do I need to configure a specific option to tell the VPN server to forward all traffic it receives down it's eth0 port and out to the internet. Thanks!

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  • Google Apps for Mail - MX entry related doubt

    - by niting
    I have signed up for google apps recently for my organisation. The google apps guide says that I need to edit the MX entry for my domain so that the mails get redirected to the google mail servers instead of my default mail server. But, I am having a doubt whether to edit the MX entry on my domain name provider or the hosting server. My domain name provider is godaddy.com and my server is ServInt. And, moreover, what difference does it make if I edit the MX entries on my hosting provider or my domain name provider. Thanks, niting

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  • Help me upgrade my pf.conf for OpenBSD 4.7

    - by polemon
    I'm planning on upgrading my OpenBSD to 4.7 (from 4.6) and as you may or may not know, they changed the syntax for pf.conf. This is the relevant portion from the upgrade guide: pf(4) NAT syntax change As described in more detail in this mailing list post, PF's separate nat/rdr/binat (translation) rules have been replaced with actions on regular match/filter rules. Simple rulesets may be converted like this: nat on $ext_if from 10/8 -> ($ext_if) rdr on $ext_if to ($ext_if) -> 1.2.3.4 becomes match out on $ext_if from 10/8 nat-to ($ext_if) match in on $ext_if to ($ext_if) rdr-to 1.2.3.4 and... binat on $ext_if from $web_serv_int to any -> $web_serv_ext becomes match on $ext_if from $web_serv_int to any binat-to $web_serv_ext nat-anchor and/or rdr-anchor lines, e.g. for relayd(8), ftp-proxy(8) and tftp-proxy(8), are no longer used and should be removed from pf.conf(5), leaving only the anchor lines. Translation rules relating to these and spamd(8) will need to be adjusted as appropriate. N.B.: Previously, translation rules had "stop at first match" behaviour, with binat being evaluated first, followed by nat/rdr depending on direction of the packet. Now the filter rules are subject to the usual "last match" behaviour, so care must be taken with rule ordering when converting. pf(4) route-to/reply-to syntax change The route-to, reply-to, dup-to and fastroute options in pf.conf move to filteropts; pass in on $ext_if route-to (em1 192.168.1.1) from 10.1.1.1 pass in on $ext_if reply-to (em1 192.168.1.1) to 10.1.1.1 becomes pass in on $ext_if from 10.1.1.1 route-to (em1 192.168.1.1) pass in on $ext_if to 10.1.1.1 reply-to (em1 192.168.1.1) Now, this is my current pf.conf: # $OpenBSD: pf.conf,v 1.38 2009/02/23 01:18:36 deraadt Exp $ # # See pf.conf(5) for syntax and examples; this sample ruleset uses # require-order to permit mixing of NAT/RDR and filter rules. # Remember to set net.inet.ip.forwarding=1 and/or net.inet6.ip6.forwarding=1 # in /etc/sysctl.conf if packets are to be forwarded between interfaces. ext_if="pppoe0" int_if="nfe0" int_net="192.168.0.0/24" polemon="192.168.0.10" poletopw="192.168.0.12" segatop="192.168.0.20" table <leechers> persist set loginterface $ext_if set skip on lo match on $ext_if all scrub (no-df max-mss 1440) altq on $ext_if priq bandwidth 950Kb queue {q_pri, q_hi, q_std, q_low} queue q_pri priority 15 queue q_hi priority 10 queue q_std priority 7 priq(default) queue q_low priority 0 nat-anchor "ftp-proxy/*" rdr-anchor "ftp-proxy/*" nat on $ext_if from !($ext_if) -> ($ext_if) rdr pass on $int_if proto tcp to port ftp -> 127.0.0.1 port 8021 rdr pass on $ext_if proto tcp to port 2080 -> $segatop port 80 rdr pass on $ext_if proto tcp to port 2022 -> $segatop port 22 rdr pass on $ext_if proto tcp to port 4000 -> $polemon port 4000 rdr pass on $ext_if proto tcp to port 6600 -> $polemon port 6600 anchor "ftp-proxy/*" block pass on $int_if queue(q_hi, q_pri) pass out on $ext_if queue(q_std, q_pri) pass out on $ext_if proto icmp queue q_pri pass out on $ext_if proto {tcp, udp} to any port ssh queue(q_hi, q_pri) pass out on $ext_if proto {tcp, udp} to any port http queue(q_std, q_pri) #pass out on $ext_if proto {tcp, udp} all queue(q_low, q_hi) pass out on $ext_if proto {tcp, udp} from <leechers> queue(q_low, q_std) pass in on $ext_if proto tcp to ($ext_if) port ident queue(q_hi, q_pri) pass in on $ext_if proto tcp to ($ext_if) port ssh queue(q_hi, q_pri) pass in on $ext_if proto tcp to ($ext_if) port http queue(q_hi, q_pri) pass in on $ext_if inet proto icmp all icmp-type echoreq queue q_pri If someone has experience with porting the 4.6 pf.conf to 4.7, please help me do the correct changes. OK, this is how far I've got: I commented out nat-anchor and rdr-anchor, as describted in the guide: #nat-anchor "ftp-proxy/*" #rdr-anchor "ftp-proxy/*" And this is how I've "converted" the rdr rules: #nat on $ext_if from !($ext_if) -> ($ext_if) match out on $ext_if from !($ext_if) nat-to ($ext_if) #rdr pass on $int_if proto tcp to port ftp -> 127.0.0.1 port 8021 match in on $int_if proto tcp to port ftp rdr-to 127.0.0.1 port 8021 #rdr pass on $ext_if proto tcp to port 2080 -> $segatop port 80 match in on $ext_if proto tcp tp port 2080 rdr-to $segatop port 80 #rdr pass on $ext_if proto tcp to port 2022 -> $segatop port 22 match in on $ext_if proto tcp tp port 2022 rdr-to $segatop port 22 rdr pass on $ext_if proto tcp to port 4000 -> $polemon port 4000 match in on $ext_if proto tcp tp port 4000 rdr-to $polemon port 4000 rdr pass on $ext_if proto tcp to port 6600 -> $polemon port 6600 match in on $ext_if proto tcp tp port 6600 rdr-to $polemon port 6600 Did I miss anything? Is the anchor for ftp-proxy OK as it is now? Do I need to change something in the other pass in on... lines?

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  • How to pass parameters to a function?

    - by sbi
    I need to process an SVN working copy in a PS script, but I have trouble passing arguments to functions. Here's what I have: function foo($arg1, $arg2) { echo $arg1 echo $arg2.FullName } echo "0: $($args[0])" echo "1: $($args[1])" $items = get-childitem $args[1] $items | foreach-object -process {foo $args[0] $_} I want to pass $arg[0] as $arg1 to foo, and $arg[1] as $arg2. However, it doesn't work, for some reason $arg1 is always empty: PS C:\Users\sbi> .\test.ps1 blah .\Dropbox 0: blah 1: .\Dropbox C:\Users\sbi\Dropbox\Photos C:\Users\sbi\Dropbox\Public C:\Users\sbi\Dropbox\sbi PS C:\Users\sbi> Note: The "blah"parameter isn't passed as $arg1. I am absolutely sure this is something hilariously simple (I only just started with doing PS and still feel very clumsy), but I have banged my head against this for more than an hour now, and I can't find anything.

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  • Pass parameters to a script securely

    - by codeholic
    What is the best way to pass parameters to a forked script securely? E. g. passing parameters through command line operands is not secure, since someone who has an account on the host can run ps and see them. Unnamed pipe is quite secure, as far as I understand, isn't it? I mean, passing parameters to STDIN of the forked process. What about passing parameters in environment vars? Is it secure? What about passing parameters by other means I didn't mention?

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  • proxy pass redirection

    - by zam
    I am struggling with a redirection rule. I am now running my Redmine in webrick in port 3000 and proxy-pass it. The URL of my Redmine is xyz.example.com. I also want to redirect the Redmine using the URL: abc.example.com. I added the server alias but no redirection taking place. Here is my configuration: <VirtualHost *:80> ServerName xyz.example.com ServerAlias abc.examle.com ProxyPass / h://local:3000/ ProxyPassReverse / h://local:3000/ </VirtualHost>

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  • jquery get radiobuttonlist by name dynamically

    - by Cindy
    I have two radiobuttonlist and one checkboxlist on the page. Ideally based on the checkbox selected value, I want to enable/disable corresponding radibuttonlist with jquery function. But some how $("input[name*=" + columnName + "]") always return null. It can not find the radiobuttonlist by its name? $(function() { function checkBoxClicked() { var isChecked = $(this).is(":checked"); var columnName = "rblColumn" + $(this).parent().attr("alt"); if (isChecked) { $("input[name*=" + columnName + "]").removeAttr("disabled"); } else { $("input[name*=" + columnName + "]").attr("disabled", "disabled"); $("input[name*=" + columnName + "] input").each(function() { $(this).attr("checked", "") }); } } //intercept any check box click event inside the #list Div $(":checkbox").click(checkBoxClicked); }); <asp:Panel ID="TestPanel" runat="server"> <asp:CheckBoxList ID = "chkColumn" runat="server" RepeatDirection="Horizontal"> <asp:ListItem id = "Column1" runat="server" Text="Column 1" Value="1" alt="1" class="HeadColumn" /> <asp:ListItem id = "Column2" runat="server" Text="Column 2" Value="2" alt="2" class="HeadColumn"/> </asp:CheckBoxList> <table> <tr> <td> <asp:RadioButtonList ID = "rblColumn1" runat="server" RepeatDirection="Vertical" disabled="disabled"> <asp:ListItem id="liColumn1p" runat="server" /> <asp:ListItem id="liColumn1n" runat="server" /> </asp:RadioButtonList> </td> <td> <asp:RadioButtonList ID = "rblColumn2" runat="server" RepeatDirection="Vertical" disabled="disabled"> <asp:ListItem id="liColumn2p" runat="server" /> <asp:ListItem id="liColumn2n" runat="server" /> </asp:RadioButtonList> </td> </tr> </table> </asp:Panel> source: <div id="TestPanel"> <table id="chkColumn" border="0"> <tr> <td><span id="Column1" alt="1" class="HeadColumn"><input id="chkColumn_0" type="checkbox" name="chkColumn$0" /><label for="chkColumn_0">Column 1</label></span></td><td><span id="Column2" alt="2" class="HeadColumn"><input id="chkColumn_1" type="checkbox" name="chkColumn$1" /><label for="chkColumn_1">Column 2</label></span></td> </tr> </table> <table> <tr> <td> <table id="rblColumn1" class="myRadioButtonList" disabled="disabled" border="0"> <tr> <td><span id="liColumn1p"><input id="rblColumn1_0" type="radio" name="rblColumn1" value="" /></span></td> </tr><tr> <td><span id="liColumn1n"><input id="rblColumn1_1" type="radio" name="rblColumn1" value="" /></span></td> </tr> </table> </td> <td> <table id="rblColumn2" class="myRadioButtonList" disabled="disabled" border="0"> <tr> <td><span id="liColumn2p"><input id="rblColumn2_0" type="radio" name="rblColumn2" value="" /></span></td> </tr><tr> <td><span id="liColumn2n"><input id="rblColumn2_1" type="radio" name="rblColumn2" value="" /></span></td> </tr> </table> </td> </tr> </table> </div>

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  • Losing jQuery functionality after postback

    - by David Lozzi
    I have seen a TON of people reporting this issue online, but no actual solutions. I'm not using AJAX or updatepanels, just a dropdown that posts back on selected index change. My HTML is <div id="myList"> <table id="ctl00_PlaceHolderMain_dlFields" cellspacing="0" border="0" style="border-collapse:collapse;"> <tr> <td> <tr> <td class="ms-formlabel" style="width: 175px; padding-left: 10px"> <span id="ctl00_PlaceHolderMain_dlFields_ctl00_lblDestinationField">Body</span> </td> <td class="ms-formbody" style="width: 485px"> <input name="ctl00$PlaceHolderMain$dlFields$ctl00$txtSource" type="text" id="ctl00_PlaceHolderMain_dlFields_ctl00_txtSource" class="ms-input" style="width:230px" /> <select name="ctl00$PlaceHolderMain$dlFields$ctl00$ddlSourceFields" id="ctl00_PlaceHolderMain_dlFields_ctl00_ddlSourceFields" class="ms-input"> <option value="Some Field Name 1">Some Field Name 1</option> <option value="Some Field Name 2">Some Field Name 2</option> <option value="Some Field Name 3">Some Field Name 3</option> <option value="Some Field Name 4">Some Field Name 4</option> </select> <a href="#" id="appendSelect">append</a> </td> </tr> </td> </tr><tr> <td> <tr> <td class="ms-formlabel" style="width: 175px; padding-left: 10px"> <span id="ctl00_PlaceHolderMain_dlFields_ctl01_lblDestinationField">Expires</span> </td> <td class="ms-formbody" style="width: 485px"> <input name="ctl00$PlaceHolderMain$dlFields$ctl01$txtSource" type="text" id="ctl00_PlaceHolderMain_dlFields_ctl01_txtSource" class="ms-input" style="width:230px" /> <select name="ctl00$PlaceHolderMain$dlFields$ctl01$ddlSourceFields" id="ctl00_PlaceHolderMain_dlFields_ctl01_ddlSourceFields" class="ms-input"> <option value="Some Field Name 1">Some Field Name 1</option> <option value="Some Field Name 2">Some Field Name 2</option> <option value="Some Field Name 3">Some Field Name 3</option> <option value="Some Field Name 4">Some Field Name 4</option> </select> <a href="#" id="appendSelect">append</a> </td> </tr> </td> </tr><tr> <td> <tr> <td class="ms-formlabel" style="width: 175px; padding-left: 10px"> <span id="ctl00_PlaceHolderMain_dlFields_ctl02_lblDestinationField">Title</span> </td> <td class="ms-formbody" style="width: 485px"> <input name="ctl00$PlaceHolderMain$dlFields$ctl02$txtSource" type="text" id="ctl00_PlaceHolderMain_dlFields_ctl02_txtSource" class="ms-input" style="width:230px" /> <select name="ctl00$PlaceHolderMain$dlFields$ctl02$ddlSourceFields" id="ctl00_PlaceHolderMain_dlFields_ctl02_ddlSourceFields" class="ms-input"> <option value="Some Field Name 1">Some Field Name 1</option> <option value="Some Field Name 2">Some Field Name 2</option> <option value="Some Field Name 3">Some Field Name 3</option> <option value="Some Field Name 4">Some Field Name 4</option> </select> <a href="#" id="appendSelect">append</a> </td> </tr> </td> </tr> </table></div> The above Div tag is static, and the table is generated from a DataList object. On postback the datalist reloads using a new dataset, for example <div id="myList"> <table id="ctl00_PlaceHolderMain_dlFields" cellspacing="0" border="0" style="border-collapse:collapse;"> <tr> <td> <tr> <td class="ms-formlabel" style="width: 175px; padding-left: 10px"> <span id="ctl00_PlaceHolderMain_dlFields_ctl00_lblDestinationField">Notes</span> </td> <td class="ms-formbody" style="width: 485px"> <input name="ctl00$PlaceHolderMain$dlFields$ctl00$txtSource" type="text" id="ctl00_PlaceHolderMain_dlFields_ctl00_txtSource" class="ms-input" style="width:230px" /> <select name="ctl00$PlaceHolderMain$dlFields$ctl00$ddlSourceFields" id="ctl00_PlaceHolderMain_dlFields_ctl00_ddlSourceFields" class="ms-input"> <option value="Some Field Name 1">Some Field Name 1</option> <option value="Some Field Name 2">Some Field Name 2</option> <option value="Some Field Name 3">Some Field Name 3</option> <option value="Some Field Name 4">Some Field Name 4</option> </select> <a href="#" id="appendSelect">append</a> </td> </tr> </td> </tr><tr> <td> <tr> <td class="ms-formlabel" style="width: 175px; padding-left: 10px"> <span id="ctl00_PlaceHolderMain_dlFields_ctl01_lblDestinationField">URL</span> </td> <td class="ms-formbody" style="width: 485px"> <input name="ctl00$PlaceHolderMain$dlFields$ctl01$txtSource" type="text" id="ctl00_PlaceHolderMain_dlFields_ctl01_txtSource" class="ms-input" style="width:230px" /> <select name="ctl00$PlaceHolderMain$dlFields$ctl01$ddlSourceFields" id="ctl00_PlaceHolderMain_dlFields_ctl01_ddlSourceFields" class="ms-input"> <option value="Some Field Name 1">Some Field Name 1</option> <option value="Some Field Name 2">Some Field Name 2</option> <option value="Some Field Name 3">Some Field Name 3</option> <option value="Some Field Name 4">Some Field Name 4</option> </select> <a href="#" id="appendSelect">append</a> </td> </tr> </td> </tr> </table></div> After the postback and the datalist is reloaded, my JQuery doesn't work anymore. No errors, nothing. I don't see any actual changes in the objects in the HTML that should cause this. How do I fix this? Any workarounds or bandaides I can apply? My JQuery is below <script type='text/javascript'> $(document).ready(function () { $('#myList a').live("click", function () { var $selectValue = $(this).siblings('select').val(); var $thatInput = $(this).siblings('input'); var val = $thatInput.val() + ' |[' + $selectValue + ']|'; $thatInput.val(jQuery.trim(val)); }) }); </script> Thanks!!

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  • jQuery Autocomplete using extraParams to pass additional GET variables

    - by paperclip
    I am referring specifically to the jQuery Autocomplete v1.1 plugin by Jörn Zaefferer [source: http://bassistance.de/jquery-plugins/jquery-plugin-autocomplete/] as there seems to be quite a few variations of this plugin. I'm trying to pass additional parameters to the server when the user starts typing because I have multiple fields that I want autocomplete to provide suggestions for. In addition to the query, I want to send the input name attribute to the server but I can't seem to use $(this).attr('name') within the extraParams. My jQuery: $('.ajax-auto input').autocomplete('search.php', { extraParams: { search_type: function(){ return $(this).attr('name'); } } }) This is my HTML. <form method="post" action="#" id="update-form" autocomplete="off"> <ol> <li class="ajax-auto"> <label for="form-initials">Initials</label> <input type="text" id="form-initials" name="initials" /> </li> <li class="ajax-auto"> <label for="form-company">Company</label> <input type="text" id="form-company" name="company" /> </li> </ol> </form> Any suggestions?

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  • WCF how to pass token for authentication?

    - by Kevin
    I have a WCF service which would like to support basicHttpBinding and webHttpBinding. When the client successfully login, server will generate a token for client to pass to server on all the request make later. Question is how the client can pass the token to server? I don't want to add an extra parameter on every web method to hold the token.

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  • storing user info/pass in web.config authentication

    - by Tomaszewski
    Hello, I am trying to write a simple internal app with some simple authentication. I'm also trying to make this quick and learn about the forms authentication via web.config. So i have my authentication working if I hard code my 'user name' and 'password' into C# code and do a simple conditional. However, I'm having a tough time storing the a user/pass to be checked against in the web.config file. The MSDN manual says to put this into the web.config: <authentication mode="Forms"> <forms loginUrl="login.aspx"> <credentials passwordFormat="SHA1"> <user name="user1" password="27CE4CA7FBF00685AF2F617E3F5BBCAFF7B7403C" /> <user name="user2" password="D108F80936F78DFDD333141EBC985B0233A30C7A" /> <user name="user3" password="7BDB09781A3F23885CD43177C0508B375CB1B7E9"/> </credentials> </forms> </authentication> However, the minute I add 'credentials' into the 'authentication' section, I get this error: Server Error in '/' Application. Configuration Error Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. Parser Error Message: Unrecognized element 'credentials'. Source Error: Line 44: <authentication mode="Forms"> Line 45: <forms loginUrl="login.aspx" /> Line 46: <credentials> Line 47: Line 48: </credentials> Source File: C:\inetpub\wwwroot\asp\projects\passwordCatalog\passwordCatalog\web.config Line: 46 So my question is, how and where would I add the following in the web.config file? <credentials passwordFormat="SHA1"> <user name="johndoe" password="mypass123" /> </credentials>

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  • How to I pass @selector as a parameter?

    - by erotsppa
    For the method [NSThread detachNewThreadSelector:@selector(method:) toTarget:self withObject:(id)SELECTOR]; How do I pass in a @selector? I tried casting it to (id) to make it compile but it crashes in runtime. More specifically, I have a method like this +(void)method1:(SEL)selector{ [NSThread detachNewThreadSelector:@selector(method2:) toTarget:self withObject:selector]; } it crashes, how do I pass in the selector without crashing? So that the new thread can call the selector when the thread is ready?

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  • how to pass datetime in session value to next page

    - by SmartDev
    Hi , I have textbox which is a date field . i need to store that in a session and pass that value to another page . im using sessions for that . can anyone tell how to convert it to date time and pass in a session . Example: Session["startdate"] = Convert.ToDateTime(textbox1.Text); is this the rite way. Thanks Sachin

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  • Amazon S3 Change file download name

    - by Daveo
    I have files stored on S3 with a GUID as the key name. I am using a pre signed URL to download as per S3 REST API I store the original file name in my own Database. When a user clicks to download a file from my web application I want to return their original file name, but currently all they get is a GUID. How can I achieve this? My web app is in salesforce so I do not have much control to do response.redirects all download the file to the web server then rename it due to governor limitations. Is there some HTML redirect, meta refresh, Javascript I can use? Is there some way to change the download file name for S3 (the only thing I can think of is coping the object to a new name, downloading it, then deleting it). I want to avoid creating a bucket per user as we will have a lot of users and still no guarantee each file with in each bucket will have a unique name Any other solutions?

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  • How to pass variable value to gpg commands

    - by trainee
    $importkey = system('gpg --import newkey.asc . $username'); need to pass the file name as a variable.so that file name with its contents can be import in gnupg keyring. $gpg = system('gpg --recipient userid --output filename --armor --encrypt filename to encrypt', $retvalue); how can i pass the recipient email id(userid) and the filename as variable to gpg commands thanks!

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  • Liquid templates - accessing members by name

    - by egarcia
    I'm using Jekyll to create a new blog. It uses Liquid underneath. Jekyll defines certain "variables": site, content, page, post and paginator. These "variables" have several "members". For instance, post.date will return the date of a post, while post.url will return its url. My question is: can I access a variable's member using another variable as the member name? See the following example: {% if my_condition %} {% assign name = 'date' %} {% else %} {% assign name = 'url' %} {% endif %} I have a variable called name which is either 'date' or 'url'. How can I make the liquid equivalent of post[name] in ruby? The only way I've found is using a for loop to iterate over all the pairs (key-value) of post. Beware! It is quite horrible: {% for property in post %} {% if property[0] == name %} {{ property[1] }} {% endif %} {% endfor %} Argh! I hope there is a better way. Thanks.

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  • Autocorrelation returns random results with mic input (using a high pass filter)

    - by Niall
    Hello, Sorry to ask a similar question to the one i asked before (FFT Problem (Returns random results)), but i've looked up pitch detection and autocorrelation and have found some code for pitch detection using autocorrelation. Im trying to do pitch detection of a users singing. Problem is, it keeps returning random results. I've got some code from http://code.google.com/p/yaalp/ which i've converted to C++ and modified (below). My sample rate is 2048, and data size is 1024. I'm detecting pitch of both a sine wave and mic input. The frequency of the sine wave is 726.0, and its detecting it to be 722.950820 (which im ok with), but its detecting the pitch of the mic as a random number from around 100 to around 1050. I'm now using a High pass filter to remove the DC offset, but it's not working. Am i doing it right, and if so, what else can i do to fix it? Any help would be greatly appreciated! double* doHighPassFilter(short *buffer) { // Do FFT: int bufferLength = 1024; float *real = malloc(bufferLength*sizeof(float)); float *real2 = malloc(bufferLength*sizeof(float)); for(int x=0;x<bufferLength;x++) { real[x] = buffer[x]; } fft(real, bufferLength); for(int x=0;x<bufferLength;x+=2) { real2[x] = real[x]; } for (int i=0; i < 30; i++) //Set freqs lower than 30hz to zero to attenuate the low frequencies real2[i] = 0; // Do inverse FFT: inversefft(real2,bufferLength); double* real3 = (double*)real2; return real3; } double DetectPitch(short* data) { int sampleRate = 2048; //Create sine wave double *buffer = malloc(1024*sizeof(short)); double amplitude = 0.25 * 32768; //0.25 * max length of short double frequency = 726.0; for (int n = 0; n < 1024; n++) { buffer[n] = (short)(amplitude * sin((2 * 3.14159265 * n * frequency) / sampleRate)); } doHighPassFilter(data); printf("Pitch from sine wave: %f\n",detectPitchCalculation(buffer, 50.0, 1000.0, 1, 1)); printf("Pitch from mic: %f\n",detectPitchCalculation(data, 50.0, 1000.0, 1, 1)); return 0; } // These work by shifting the signal until it seems to correlate with itself. // In other words if the signal looks very similar to (signal shifted 200 data) than the fundamental period is probably 200 data // Note that the algorithm only works well when there's only one prominent fundamental. // This could be optimized by looking at the rate of change to determine a maximum without testing all periods. double detectPitchCalculation(double* data, double minHz, double maxHz, int nCandidates, int nResolution) { //-------------------------1-------------------------// // note that higher frequency means lower period int nLowPeriodInSamples = hzToPeriodInSamples(maxHz, 2048); int nHiPeriodInSamples = hzToPeriodInSamples(minHz, 2048); if (nHiPeriodInSamples <= nLowPeriodInSamples) printf("Bad range for pitch detection."); if (1024 < nHiPeriodInSamples) printf("Not enough data."); double *results = new double[nHiPeriodInSamples - nLowPeriodInSamples]; //-------------------------2-------------------------// for (int period = nLowPeriodInSamples; period < nHiPeriodInSamples; period += nResolution) { double sum = 0; // for each sample, find correlation. (If they are far apart, small) for (int i = 0; i < 1024 - period; i++) sum += data[i] * data[i + period]; double mean = sum / 1024.0; results[period - nLowPeriodInSamples] = mean; } //-------------------------3-------------------------// // find the best indices int *bestIndices = findBestCandidates(nCandidates, results, nHiPeriodInSamples - nLowPeriodInSamples - 1); //note findBestCandidates modifies parameter // convert back to Hz double *res = new double[nCandidates]; for (int i=0; i < nCandidates;i++) res[i] = periodInSamplesToHz(bestIndices[i]+nLowPeriodInSamples, 2048); double pitch2 = res[0]; free(res); free(results); return pitch2; } /// Finds n "best" values from an array. Returns the indices of the best parts. /// (One way to do this would be to sort the array, but that could take too long. /// Warning: Changes the contents of the array!!! Do not use result array afterwards. int* findBestCandidates(int n, double* inputs,int length) { //int length = inputs.Length; if (length < n) printf("Length of inputs is not long enough."); int *res = new int[n]; double minValue = 0; for (int c = 0; c < n; c++) { // find the highest. double fBestValue = minValue; int nBestIndex = -1; for (int i = 0; i < length; i++) { if (inputs[i] > fBestValue) { nBestIndex = i; fBestValue = inputs[i]; } } // record this highest value res[c] = nBestIndex; // now blank out that index. if(nBestIndex!=-1) inputs[nBestIndex] = minValue; } return res; } int hzToPeriodInSamples(double hz, int sampleRate) { return (int)(1 / (hz / (double)sampleRate)); } double periodInSamplesToHz(int period, int sampleRate) { return 1 / (period / (double)sampleRate); } Thanks, Niall. Edit: Changed the code to implement a high pass filter with a cutoff of 30hz (from What Are High-Pass and Low-Pass Filters?, can anyone tell me how to convert the low-pass filter using convolution to a high-pass one?) but it's still returning random results. Plugging it into a VST host and using VST plugins to compare spectrums isn't an option to me unfortunately.

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  • Specify Windows Service Name on install with Setup Project

    - by sympatric greg
    Objective: In support of a Windows Service that may have multiple instances on a single machine, use a Setup Project to create an MSI capable of: Receiving user input for Service Name Installing service Serializing Service Name from 1 (so that the proper name can be used in logging and uninstall) My initial hope was to set Service Name in App.config (and then retrieve it during uninstall upon instantiation of the ServiceInstaller. This seems to have been naive, because it is not accessible during the install. If MyInstaller extends Installer, it can call base.Install(); however, my attempts to write to app.config (within MyInstaller.Install() and after base.Install()) are inneffective. So while the service can be installed with a custom Service Name, that name is not serialized and the installer is most displeased upon uninstall. How should this be done?

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