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• PPP connection between PalmOS and Ubuntu (over ttyUSB0?) without crashy "visor" kernel module

  - by Chris Boyle

  I have a Palm Treo 680 which I'd like to use as a media remote, using Palm MPC. Almost the exact instructions on that page used to work perfectly for establishing a PPP connection over the USB cable; I think I last tried it in Ubuntu 9.04 (Jaunty). In Karmic, I find that /dev/ttyUSB{0,1} are not present by default, and when I modprobe visor to get them, the Palm immediately crashes and reboots, as seen in Ubuntu bug 522753 (it reboots again as long as the module is still loaded and USB is still connected). The usbserial module has the same result. From reading that bug and elsewhere, it appears that the visor module is abandoned, and jpilot and friends use some other approach to talk to PalmOS over USB these days, which might not even involve a ttyUSB device. My question is, therefore: How do I create a PPP connection between PalmOS and Karmic without crashing the Palm?

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• Implementing union of Set using basic java array

  - by lupindeterd

  Note: This is an assignment. Hi, Continuing with my Set implementation using Java basic array, I'm now struggling with the 3 to last function namely the union. import java.io.*; class Set { private int numberOfElements = 0; private String[] setElements = new String[5]; private int maxNumberOfElements = 5; // constructor for our Set class public Set(int numberOfE, int setE, int maxNumberOfE) { int numberOfElements = numberOfE; String[] setElements = new String[setE]; int maxNumberOfElements = maxNumberOfE; } // Helper method to shorten/remove element of array since we're using basic array instead of ArrayList or HashSet from collection interface :( static String[] removeAt(int k, String[] arr) { final int L = arr.length; String[] ret = new String[L - 1]; System.arraycopy(arr, 0, ret, 0, k); System.arraycopy(arr, k + 1, ret, k, L - k - 1); return ret; } int findElement(String element) { int retval = 0; for ( int i = 0; i < setElements.length; i++) { if ( setElements[i] != null && setElements[i].equals(element) ) { return retval = i; } retval = -1; } return retval; } void add(String newValue) { int elem = findElement(newValue); if( numberOfElements < maxNumberOfElements && elem == -1 ) { setElements[numberOfElements] = newValue; numberOfElements++; } } int getLength() { if ( setElements != null ) { return setElements.length; } else { return 0; } } String[] emptySet() { setElements = new String[0]; return setElements; } Boolean isFull() { Boolean True = new Boolean(true); Boolean False = new Boolean(false); if ( setElements.length == maxNumberOfElements ){ return True; } else { return False; } } Boolean isEmpty() { Boolean True = new Boolean(true); Boolean False = new Boolean(false); if ( setElements.length == 0 ) { return True; } else { return False; } } void remove(String newValue) { for ( int i = 0; i < setElements.length; i++) { if ( setElements[i].equals(newValue) ) { setElements = removeAt(i,setElements); } } } int isAMember(String element) { int retval = -1; for ( int i = 0; i < setElements.length; i++ ) { if (setElements[i] != null && setElements[i].equals(element)) { return retval = i; } } return retval; } void printSet() { for ( int i = 0; i < setElements.length; i++) { System.out.println("Member elements on index: "+ i +" " + setElements[i]); } } String[] getMember() { String[] tempArray = new String[setElements.length]; for ( int i = 0; i < setElements.length; i++) { if(setElements[i] != null) { tempArray[i] = setElements[i]; } } return tempArray; } Set union(Set x, Set y) { String[] newtemparray = new String[x.getLength]; newtemparray = x.getMember; return x; } } // This is the SetDemo class that will make use of our Set class class SetDemo { public static void main(String[] args) { //get input from keyboard BufferedReader keyboard; InputStreamReader reader; String temp = ""; reader = new InputStreamReader(System.in); keyboard = new BufferedReader(reader); try { System.out.println("Enter string element to be added" ); temp = keyboard.readLine( ); System.out.println("You entered " + temp ); } catch (IOException IOerr) { System.out.println("There was an error during input"); } /* ************************************************************************** * Test cases for our new created Set class. * ************************************************************************** */ Set setA = new Set(1,10,10); setA.add(temp); setA.add("b"); setA.add("b"); setA.add("hello"); setA.add("world"); setA.add("six"); setA.add("seven"); setA.add("b"); int size = setA.getLength(); System.out.println("Set size is: " + size ); Boolean isempty = setA.isEmpty(); System.out.println("Set is empty? " + isempty ); int ismember = setA.isAMember("sixb"); System.out.println("Element six is member of setA? " + ismember ); Boolean output = setA.isFull(); System.out.println("Set is full? " + output ); setA.printSet(); int index = setA.findElement("world"); System.out.println("Element b located on index: " + index ); setA.remove("b"); setA.emptySet(); int resize = setA.getLength(); System.out.println("Set size is: " + resize ); setA.printSet(); Set setB = new Set(0,10,10); Set SetA = setA.union(setB,setA); } } Ok the method in question will be the implementation of union. As such this: Set union(Set x, Set y) { String[] newtemparray = new String[x.getLength]; newtemparray = x.getMember; return x; } I got this error: symbol : variable getLength location: class Set String[] newtemparray = new String[x.getLength]; ^ d:\javaprojects\Set.java:122: cannot find symbol symbol : variable getMember location: class Set newtemparray = x.getMember; ^ 2 errors My approach for union would be: *) create temporary array of string with size of the object x length. *) store object x members to temporary array by looping the object and calling the getMember *) loop object y members and check if element exist against temporary array. *) discard if it exist/add if it is not there *) return obj x with the union array. thanks, lupin

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• How can I create persistent SSH connection to "stream" commands over a period of time?

  - by Darth

  Say that I have an application running on one PC that is sending commands via SSH to another PC on the network (both machines running Linux). For example every time something happens on #1, I want to run a task on #2. In this setup, I have to create SSH connection on every single command. Is there any simple way to do this with basic unix tools without programming custom client/server application? Basically all I want is to establish a connection over SSH and then send one command after another.

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• xml validity with xsd with xsi:nillable element

  - by Laxmikanth Samudrala

  My XML file <tns:SampleInfoResponse xsi:schemaLocation="sampleNS test.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tns="sampleNS"> String String String String String String String String String String String String MY XSD file <xsd:schema targetNamespace="sampleNS" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="sampleNS" xmlns="http://www.w3.org/2001/XMLSchema"> parser is complaining on <tns:LSampleEnrlDetails/>, the XML file should be <tns:LSampleEnrlDetails xsi:nil="true"/> only for valid file ? By taking out the whole tag also the parser is complaining. I would like to know what possible cases for this tag makes the XML file valid according the above schema when i don't have the data to populate for tag

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• Server hard disk read speed and client download speed, is there a connection? [closed]

  - by Mywiki Witwiki

  Ok so a client's download speed is only as fast as a server's upload speed, and vice versa. Based on the answers to this post: Does upload speed depend upon download speed of the server? In other words, the data transfer rate between the two computers is only as fast as the speed of the "bottleneck". Let's pretend the two computers are in two different networks and both have 100Mbps internet connection. Ben wants a copy of a file in Mark's computer hard disk with 30Mbps read speed. Does this mean that Ben can download the file at a speed of around 30Mbps only, despite having an internet connection faster than 30Mbps?

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• Email not sent until application closes

  - by Tester101

  I have an application that uses SmtpClient to send E-Mail, but the E-Mails are not sent until the application closes. I have searched and searched to find a solution to the problem, but I am not able to find one. The system does have Symantec anti-virus installed, which could possibly be the problem. Does anybody have a solution to this problem? Here is the code I am using. public class EMail { private string server; public string Server {get{return this.server;}set{this.server = value;}} private string to; public string To {get{return this.to;}set{this.to = value;}} private string from; public string From {get{return this.from;}set{this.from = value;}} private string subject; public string Subject {get{return this.subject;}set{this.subject = value;}} private string body; public string Body {get{return this.body;}set{this.body = value;}} public EMail() {} public EMail(string _server, string _to, string _from, string _subject, string _body) { this.Server = _server; this.To = _to; this.From = _from; this.Subject = _subject; this.Body = _body; } public void Send() { System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage(this.From, this.To, this.Subject, this.Body); message.IsBodyHtml = true; System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient(this.Server); client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network; //I have tried this, but it still does not work. //client.ServicePoint.ConnectionLeaseTimeout = 0; try { client.Send(message); } catch(System.Exception ex) { System.Windows.Forms.MessageBox.Show(ex.ToString()); } message.Dispose(); } }

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• Returning new object, overwrite the existing one in Java

  - by lupin

  Note: This is an assignment. Hi, Ok I have this method that will create a supposedly union of 2 sets. i mport java.io.*; class Set { public int numberOfElements; public String[] setElements; public int maxNumberOfElements; // constructor for our Set class public Set(int numberOfE, int setE, int maxNumberOfE) { this.numberOfElements = numberOfE; this.setElements = new String[setE]; this.maxNumberOfElements = maxNumberOfE; } // Helper method to shorten/remove element of array since we're using basic array instead of ArrayList or HashSet from collection interface :( static String[] removeAt(int k, String[] arr) { final int L = arr.length; String[] ret = new String[L - 1]; System.arraycopy(arr, 0, ret, 0, k); System.arraycopy(arr, k + 1, ret, k, L - k - 1); return ret; } int findElement(String element) { int retval = 0; for ( int i = 0; i < setElements.length; i++) { if ( setElements[i] != null && setElements[i].equals(element) ) { return retval = i; } retval = -1; } return retval; } void add(String newValue) { int elem = findElement(newValue); if( numberOfElements < maxNumberOfElements && elem == -1 ) { setElements[numberOfElements] = newValue; numberOfElements++; } } int getLength() { if ( setElements != null ) { return setElements.length; } else { return 0; } } String[] emptySet() { setElements = new String[0]; return setElements; } Boolean isFull() { Boolean True = new Boolean(true); Boolean False = new Boolean(false); if ( setElements.length == maxNumberOfElements ){ return True; } else { return False; } } Boolean isEmpty() { Boolean True = new Boolean(true); Boolean False = new Boolean(false); if ( setElements.length == 0 ) { return True; } else { return False; } } void remove(String newValue) { for ( int i = 0; i < setElements.length; i++) { if ( setElements[i] != null && setElements[i].equals(newValue) ) { setElements = removeAt(i,setElements); } } } int isAMember(String element) { int retval = -1; for ( int i = 0; i < setElements.length; i++ ) { if (setElements[i] != null && setElements[i].equals(element)) { return retval = i; } } return retval; } void printSet() { for ( int i = 0; i < setElements.length; i++) { if (setElements[i] != null) { System.out.println("Member elements on index: "+ i +" " + setElements[i]); } } } String[] getMember() { String[] tempArray = new String[setElements.length]; for ( int i = 0; i < setElements.length; i++) { if(setElements[i] != null) { tempArray[i] = setElements[i]; } } return tempArray; } Set union(Set x, Set y) { String[] newXtemparray = new String[x.getLength()]; String[] newYtemparray = new String[y.getLength()]; int len = newYtemparray.length + newXtemparray.length; Set temp = new Set(0,len,len); newXtemparray = x.getMember(); newYtemparray = x.getMember(); for(int i = 0; i < newYtemparray.length; i++) { temp.add(newYtemparray[i]); } for(int j = 0; j < newXtemparray.length; j++) { temp.add(newXtemparray[j]); } return temp; } Set difference(Set x, Set y) { String[] newXtemparray = new String[x.getLength()]; String[] newYtemparray = new String[y.getLength()]; int len = newYtemparray.length + newXtemparray.length; Set temp = new Set(0,len,len); newXtemparray = x.getMember(); newYtemparray = x.getMember(); for(int i = 0; i < newXtemparray.length; i++) { temp.add(newYtemparray[i]); } for(int j = 0; j < newYtemparray.length; j++) { int retval = temp.findElement(newYtemparray[j]); if( retval != -1 ) { temp.remove(newYtemparray[j]); } } return temp; } } // This is the SetDemo class that will make use of our Set class class SetDemo { public static void main(String[] args) { //get input from keyboard BufferedReader keyboard; InputStreamReader reader; String temp = ""; reader = new InputStreamReader(System.in); keyboard = new BufferedReader(reader); try { System.out.println("Enter string element to be added" ); temp = keyboard.readLine( ); System.out.println("You entered " + temp ); } catch (IOException IOerr) { System.out.println("There was an error during input"); } /* ************************************************************************** * Test cases for our new created Set class. * ************************************************************************** */ Set setA = new Set(0,10,10); setA.add(temp); setA.add("b"); setA.add("b"); setA.add("hello"); setA.add("world"); setA.add("six"); setA.add("seven"); setA.add("b"); int size = setA.getLength(); System.out.println("Set size is: " + size ); Boolean isempty = setA.isEmpty(); System.out.println("Set is empty? " + isempty ); int ismember = setA.isAMember("sixb"); System.out.println("Element sixb is member of setA? " + ismember ); Boolean output = setA.isFull(); System.out.println("Set is full? " + output ); //setA.printSet(); int index = setA.findElement("world"); System.out.println("Element b located on index: " + index ); setA.remove("b"); //setA.emptySet(); int resize = setA.getLength(); System.out.println("Set size is: " + resize ); //setA.printSet(); Set setB = new Set(0,10,10); setB.add("b"); setB.add("z"); setB.add("x"); setB.add("y"); Set setC = setA.union(setB,setA); System.out.println("Elements of setA"); setA.printSet(); System.out.println("Union of setA and setB"); setC.printSet(); } } The union method works a sense that somehow I can call another method on it but it doesn't do the job, i supposedly would create and union of all elements of setA and setB but it only return element of setB. Sample output follows: java SetDemo Enter string element to be added hello You entered hello Set size is: 10 Set is empty? false Element sixb is member of setA? -1 Set is full? true Element b located on index: 2 Set size is: 9 Elements of setA Member elements on index: 0 hello Member elements on index: 1 world Member elements on index: 2 six Member elements on index: 3 seven Union of setA and setB Member elements on index: 0 b Member elements on index: 1 z Member elements on index: 2 x Member elements on index: 3 y thanks, lupin

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• How to find out all versions of iPad from user-agent string?

  - by User11091981

  I wanted to find out all the version's of iPad (excluding iPhone, iPod) from user agent string, currently while testing I got the following string Mozilla/5.0 (iPad; CPU OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3 Question: Will the following code works fine for all the iPad's? String userAgentStr = request.getHeader("User-agent"); if (userAgentStr.contains("iPad")) { //do my logic } EDIT: I am using Dolphin browser from iPad but I am getting the following UA string: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en_US) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8C148 Safari/6533.18.5 Similarly iBrowser from iPad UA string is: Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Mobile/9B206 So my above code is breaking...

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• How can I put text from a multi-line text box into one string?

  - by Kevin van Zanten

  Dear reader, I'm faced with a bit of an issue. The scenario is that I have a multi-line text box and I want to put all that text into one single string, without any new lines in it. This is what I have at the moment: string[] values = tbxValueList.Text.Split('\n'); foreach (string value in values) { if (value != "" && value != " " && value != null && value != "|") { valueList += value; } } The problem is that no matter what I try and what I do, there is always a new line (at least I think?) in my string, so instead of getting: "valuevaluevalue" I get: "value value value". I've even tried to replace with string.Replace and regex.Replace, but alas to no avail. Please advise. Yours sincerely, Kevin van Zanten

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• C# Persistent WebClient

  - by Nullstr1ng

  I have a class written in C# (Windows Forms) It's a WebClient class which I intent to use in some website and for Logging In and navigation. Here's the complete class pastebin.com (the class has 197 lines so I just use pastebin. Sorry if I made a little bit harder for you to read the class, also below this post) The problem is, am not sure why it's not persistent .. I was able to log in, but when I navigate to other page (without leaving the domain), I was thrown back to log in page. Can you help me solving this problem? one issue though is, the site I was trying to connect is "HTTPS" protocol. I have not yet tested this on just a regular HTTP. Thank you in advance. /* * Web Client v1.2 * --------------- * Date: 12/17/2010 * author: Jayson Ragasa */ using System; using System.Collections; using System.Collections.Specialized; using System.Collections.Generic; using System.Text; using System.IO; using System.Net; using System.Web; namespace Nullstring.Modules.WebClient { public class WebClientLibrary { #region vars string _method = string.Empty; ArrayList _params; CookieContainer cookieko; HttpWebRequest req = null; HttpWebResponse resp = null; Uri uri = null; #endregion #region properties public string Method { set { _method = value; } } #endregion #region constructor public WebClientLibrary() { _method = "GET"; _params = new ArrayList(); cookieko = new CookieContainer(); } #endregion #region methods public void ClearParameter() { _params.Clear(); } public void AddParameter(string key, string value) { _params.Add(string.Format("{0}={1}", WebTools.URLEncodeString(key), WebTools.URLEncodeString(value))); } public string GetResponse(string URL) { StringBuilder response = new StringBuilder(); #region create web request { uri = new Uri(URL); req = (HttpWebRequest)WebRequest.Create(URL); req.Method = "GET"; req.GetLifetimeService(); } #endregion #region get web response { resp = (HttpWebResponse)req.GetResponse(); Stream resStream = resp.GetResponseStream(); int bytesReceived = 0; string tempString = null; int count = 0; byte[] buf = new byte[8192]; do { count = resStream.Read(buf, 0, buf.Length); if (count != 0) { bytesReceived += count; tempString = Encoding.UTF8.GetString(buf, 0, count); response.Append(tempString); } } while (count > 0); } #endregion return response.ToString(); } public string GetResponse(string URL, bool HasParams) { StringBuilder response = new StringBuilder(); #region create web request { uri = new Uri(URL); req = (HttpWebRequest)WebRequest.Create(URL); req.MaximumAutomaticRedirections = 20; req.AllowAutoRedirect = true; req.Method = this._method; req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"; req.KeepAlive = true; req.CookieContainer = this.cookieko; req.UserAgent = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.224 Safari/534.10"; } #endregion #region build post data { if (HasParams) { if (this._method.ToUpper() == "POST") { string Parameters = String.Join("&", (String[])this._params.ToArray(typeof(string))); UTF8Encoding encoding = new UTF8Encoding(); byte[] loginDataBytes = encoding.GetBytes(Parameters); req.ContentType = "application/x-www-form-urlencoded"; req.ContentLength = loginDataBytes.Length; Stream stream = req.GetRequestStream(); stream.Write(loginDataBytes, 0, loginDataBytes.Length); stream.Close(); } } } #endregion #region get web response { resp = (HttpWebResponse)req.GetResponse(); Stream resStream = resp.GetResponseStream(); int bytesReceived = 0; string tempString = null; int count = 0; byte[] buf = new byte[8192]; do { count = resStream.Read(buf, 0, buf.Length); if (count != 0) { bytesReceived += count; tempString = Encoding.UTF8.GetString(buf, 0, count); response.Append(tempString); } } while (count > 0); } #endregion return response.ToString(); } #endregion } public class WebTools { public static string EncodeString(string str) { return HttpUtility.HtmlEncode(str); } public static string DecodeString(string str) { return HttpUtility.HtmlDecode(str); } public static string URLEncodeString(string str) { return HttpUtility.UrlEncode(str); } public static string URLDecodeString(string str) { return HttpUtility.UrlDecode(str); } } } UPDATE Dec 22GetResponse overload public string GetResponse(string URL) { StringBuilder response = new StringBuilder(); #region create web request { //uri = new Uri(URL); req = (HttpWebRequest)WebRequest.Create(URL); req.Method = "GET"; req.CookieContainer = this.cookieko; } #endregion #region get web response { resp = (HttpWebResponse)req.GetResponse(); Stream resStream = resp.GetResponseStream(); int bytesReceived = 0; string tempString = null; int count = 0; byte[] buf = new byte[8192]; do { count = resStream.Read(buf, 0, buf.Length); if (count != 0) { bytesReceived += count; tempString = Encoding.UTF8.GetString(buf, 0, count); response.Append(tempString); } } while (count 0); } #endregion return response.ToString(); } But still I got thrown back to login page. UPDATE: Dec 23 I tried listing the cookie and here's what I get at first, I have to login to a webform and this I have this Cookie JSESSIONID=368C0AC47305282CBCE7A566567D2942 then I navigated to another page (but on the same domain) I got a different Cooke? JSESSIONID=9FA2D64DA7669155B9120790B40A592C What went wrong? I use the code updated last Dec 22

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• How to convert a gi-normous integer (in string format) to hex format? (C#)

  - by eviljack

  Given a potentially huge integer value (in c# string format), I want to be able to generate it's hex equivalent. Normal methods don't apply here as we are talking arbitrarily large numbers, 50 digits or more. The techniques I've seen which use a technique like this: // Store integer 182 int decValue = 182; // Convert integer 182 as a hex in a string variable string hexValue = decValue.ToString("X"); // Convert the hex string back to the number int decAgain = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber); won't work because the integer to convert is too large. For example I need to be able to convert a string like this: 843370923007003347112437570992242323 to it's hex equivalent. these don't work: http://stackoverflow.com/questions/1139957/c-convert-int-to-hex-and-back-again http://stackoverflow.com/questions/74148/how-to-convert-numbers-between-hex-and-decimal-in-c

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• Is there a simpler way to convert a byte array to a 2-byte-size hexadecimal string?

  - by Tom Brito

  Is there a simpler way of implement this? Or a implemented method in JDK or other lib? /** * Convert a byte array to 2-byte-size hexadecimal String. */ public static String to2DigitsHex(byte[] bytes) { String hexData = ""; for (int i = 0; i < bytes.length; i++) { int intV = bytes[i] & 0xFF; // positive int String hexV = Integer.toHexString(intV); if (hexV.length() < 2) { hexV = "0" + hexV; } hexData += hexV; } return hexData; } public static void main(String[] args) { System.out.println(to2DigitsHex(new byte[] {8, 10, 12})); } the output is: "08 0A 0C" (without the spaces)

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• Is there any way to limit my Internet connection to a per program basis?

  - by Igoru

  My Linux connection is REALLY free. I live in Brazil, so where I live I can only have 1 Mbit/s. Yes I know it's sad, but it's not the point. Everytime I'm updating my Ubuntu 9.04 or downloading something, it does eat all my bandwidth. Like, while update-manager is downloading the packages, I can see by netspeed applet in my panel that the incoming traffic goes to 110 kB/s. And then, my Emesene suddenly goes disconnected, and I can't navigate. As you can imagine, I can't use my Internet connection again until the packages are all downloaded or I cancel the update in the middle. As I said, same thing happens when I'm dowloading something, but less intrusive and immediate. The question is: is there any way to limit that APT/downloads traffic to some way I can still use my other Internet services, or to reserve some bandwidth for common navigation tasks (like we have on Windows, but I forgot this thing's name, it's like "something packages".

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• Zimbra Relaying from Postfix connection timed out sending multiple emails?

  - by liamTc

  I have a web server setup with postfix which is relaying email to a zimbra server. This working fine however I have attempted to send a few thousand emails and now the connection from postfix to zimbra is timing out. All of the emails have been deferred on the postfix queue. If I try to send individual emails from postfix to zimbra it works fine. But if I try to flush the postfix queue all of the emails time out. In mail.log the emails look like this: postfix/error[2494]: 32B0950C04: to=, relay=none, delay=19431, delays=19402/29/0/0.01, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to mail.server.com[123.45.678.91]:25: Connection timed out) I have also noticed that in the above message it says "relay=none" for these emails that are failing. But the emails that do send say "relay=domainname.com". How I can resolve this, by sending the emails in the queue and avoiding this from happening again?

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• On Mac OS X how can I monitor what is using my internet connection?

  - by Jon Hopkins

  I've got a relatively limited broadband connection (I live miles from the nearest exchange) and from time to time net access (but nothing else) slows to a near crawl. I know from a bit of monitoring software that the connection is being fairly heavily used which would explain it but I don't know what's using it. There are certainly plenty of things which might (these days there are dozens of apps that will either regularly or infrequently check data or download updates) but how can I find out? I'm happy to pay (a small amount of) money if needed, though in that case I'd rather it were a recommendation that me just Googling for something.

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• How to setup a tunneled connection to a NAS?

  - by Jan

  Hi there, While looking into alternatives for Dropbox I explored the idea of a NAS. It would be easy to hook up the NAS to a broadband connection and have the users access the files. However, - The data needs to be encrypted on the NAS itself (in case it gets stolen). - The connection to the NAS needs to be secure (VPN?). - The drive needs to appear as a drive under windows (so no https). Any ideas? Thanks in advance, I can't seem to find the final solution! Jan

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• MVC2 IModelBinder and parsing a string to an object - How do I do it?

  - by burnt_hand

  I have an object called Time public class Time{ public int Hour {get;set;} public int Minute {get;set;} public static Time Parse(string timeString){ //reads the ToString()'s previous output and returns a Time object } override protected string ToString(){ //puts out something like 14:50 (as in 2:50PM) } } So what I want is for the automatic model binding on the Edit or Create action to set this Time instance up from a string (i.e. feed the Parse method with the string and return the result). The reason I am doing this is that I will have a DropDownList with selectable times. The value of each option will be the parser readable string. Can anyone provide an example BindModel method from the IModelBinder interface?

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• How to use Dbmapper to generate JPA entity classes from DB script?

  - by Sourabh

  I am tring to use http://code.google.com/p/dbmapper/ and I am not sure how to run it frmo the command prompt. The sample usesege is like below Usage: com.moonspider.dbmap.GenerateConfig -type (-t) [String] The type to generate, either 'jpa' or 'gorm' (experimental) (jpa) -destinationDirectory (-d) [String] Destination directory -url [String] The url of the database -pkg (-package) [String] The target package () -user (-u) [String] Database user (sa) -password (-p) [String] Database password () -globalExtends (-extends) [String] Class for all Java classes to extend -globalImplements (-implements) [String] Class for all Java classes to implement -driver [String] Database drive class -extension (-ext) [String] File extension for the generated code (java) -hibernate [String] Generate hibernate.cfg.xml to this directory -jaxb [flag] Enable xml binding generation -schema [String] Specify the non-default schema to use How to run com.moonspider.dbmap.GenerateConfig from command line ?

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• Is it possible to dynamically set a static string during compile?

  - by LonnieBest

  I'm trying to dynamically create a connection string during compile time: public static string ConnectionString { get { string connectionString = @"Data Source=" + myLibrary.common.GetExeDir() + @"\Database\db.sdf;"; return connectionString; } } I keep running into type initialisation errors. I was trying to avoid having to set the connection string for all applications that user my code library. The location of the database is different for each project that uses the library. I have code that can determine the correction string, but was wanting run it during compile time. Is this even possible?

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• How should I troubleshoot a problematic wireless connection on Linux?

  - by Gearoid Murphy

  I recently purchased a netgear 150 usb wireless dongle for use with my 11.10 Xubuntu amd64 system. Using the network-manager interface, I can see local wireless networks and enter the authentication details for my local wireless lan. Unfortunately, the connection does not seem to work, I keep getting notifications that my wireless has disconnected (but none indicating that I've connected). When I examine syslog, it seems to indicate that I've successfully associated with the wireless switch and that dhcp has successfully acquired an ip address but the log shows that the dhcp process keeps sending requests, eventually dropping the connection. 'ifconfig wlan0' never shows the dhcp address logged in syslog. I suspect that the problem lies with the usb dongle, my configuration or the wireless switch but I am not certain how to isolate the problem, can anyone provide some insight on how I should go about homing in on the cause of this problem or verifying the functionality of the individual components, thanks.

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• Why is my connection to Playstation Network so unreliable? [closed]

  - by jammus

  Hello friends. I'm 28 and my girlfriend is 24. Our home internet connection is pretty reliable, it's almost always up and can get fairly high download speeds. However, my experience with the Playstation Network is pretty frustrating. I'm always getting kicked off or getting quite high latency. Are there any tips or tricks that you might help my on-line gaming run more smoothly? I'm using a wireless connection for the PS3, is this likely to affect things?

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• Missing parameter error after running MySql query

  - by annelie

  Hello, I'm completely new to MySql and haven't used SqlDataSource with UpdateParameters before, so I'm probably missing something very obvious. When trying to update a record, the update does happen but then throws an error saying "'id' parameter is missing at the statement". So the query works and the database gets updated as it should, but an error is thrown afterwards. These are the update parameters: <UpdateParameters> <asp:Parameter Name="business_name" Type="string" Size="256" /> <asp:Parameter Name="addr_line_1" Type="string" Size="256" /> <asp:Parameter Name="addr_line_2" Type="string" Size="256" /> <asp:Parameter Name="addr_line_3" Type="string" Size="256" /> <asp:Parameter Name="postcode" Type="string" Size="32" /> <asp:Parameter Name="county" Type="string" Size="128" /> <asp:Parameter Name="town_city" Type="string" Size="256" /> <asp:Parameter Name="tl_url" Type="string" Size="256" /> <asp:Parameter Name="customer_id" Type="string" Size="16" /> <asp:Parameter Name="region_id" Type="Int16" /> <asp:Parameter Name="description" Type="string" Size="1024" /> <asp:Parameter Name="approval_status" Type="string" Size="1" /> <asp:Parameter Name="tl_user_name" Type="string" Size="256" /> <asp:Parameter Name="phone" Type="string" Size="50" /> <asp:Parameter Name="uploaders_own" Type="Int16" /> </UpdateParameters> Here's the update statement: UPDATE myTable SET business_name = ?, addr_line_1 = ?, addr_line_2 = ?, addr_line_3 = ?, postcode = ?, county = ?, town_city = ?, tl_url = ?, customer_id = ?, region_id = ?, description = ?, approval_status = ?, tl_user_name = ?, phone = ?, uploaders_own = ? WHERE id = " + id Here's the stack trace: [InvalidOperationException: 'id' parameter is missing at the statement] CoreLab.MySql.r.a() +775 CoreLab.MySql.r.a(Int32& A_0, ArrayList& A_1) +448 CoreLab.MySql.x.e() +398 CoreLab.MySql.x.o() +89 CoreLab.MySql.MySqlCommand.a(CommandBehavior A_0, IDisposable A_1, Int32 A_2, Int32 A_3) +1306 CoreLab.Common.DbCommandBase.ExecuteDbDataReader(CommandBehavior behavior) +310 System.Data.Common.DbCommand.ExecuteReader() +12 CoreLab.Common.DbCommandBase.ExecuteNonQuery() +64 System.Web.UI.WebControls.SqlDataSourceView.ExecuteDbCommand(DbCommand command, DataSourceOperation operation) +386 System.Web.UI.WebControls.SqlDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) +325 System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) +92 System.Web.UI.WebControls.DetailsView.HandleUpdate(String commandArg, Boolean causesValidation) +837 System.Web.UI.WebControls.DetailsView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) +509 System.Web.UI.WebControls.DetailsView.OnBubbleEvent(Object source, EventArgs e) +95 System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37 System.Web.UI.WebControls.DetailsViewRow.OnBubbleEvent(Object source, EventArgs e) +113 System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37 System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +118 System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +135 System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10 System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13 System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565 Does anyone know what I'm doing wrong? Thanks, Annelie

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• To remove garbage characters from a string using regex...

  - by Harjit Singh

  Hi I want to remove characters from a string other then a-z, and A-Z. Created following function for the same and it works fine. public String stripGarbage(String s) { String good = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz"; String result = ""; for (int i = 0; i < s.length(); i++) { if (good.indexOf(s.charAt(i)) >= 0) { result += s.charAt(i); } } return result; } Can anyone tell me a better way to achieve the same. Probably regex may be better option. Regards Harry

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• How do I ignore the UTF-8 Byte Order Marker in String comparisons?

  - by Skrud

  I'm having a problem comparing strings in a Unit Test in C# 4.0 using Visual Studio 2010. This same test case works properly in Visual Studio 2008 (with C# 3.5). Here's the relevant code snippet: byte[] rawData = GetData(); string data = Encoding.UTF8.GetString(rawData); Assert.AreEqual("Constant", data, false, CultureInfo.InvariantCulture); While debugging this test, the data string appears to the naked eye to contain exactly the same string as the literal. When I called data.ToCharArray(), I noticed that the first byte of the string data is the value 65279 which is the UTF-8 Byte Order Marker. What I don't understand is why Encoding.UTF8.GetString() keeps this byte around. How do I get Encoding.UTF8.GetString() to not put the Byte Order Marker in the resulting string?

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• Java Inheritance - Getting a Parameter from Parent Class

  - by Aaron

  I'm trying to take one parameter from the parent class of Car and add it to my array (carsParked), how can i do this? Parent Class public class Car { protected String regNo; //Car registration number protected String owner; //Name of the owner protected String carColor; /** Creates a Car object * @param rNo - registration number * @param own - name of the owner **/ public Car (String rNo, String own, String carColour) { regNo = rNo; owner = own; carColor = carColour; } /** @return The car registration number **/ public String getRegNo() { return regNo; } /** @return A String representation of the car details **/ public String getAsString() { return "Car: " + regNo + "\nColor: " + carColor; } public String getColor() { return carColor; } } Child Class public class Carpark extends Car { private String location; // Location of the Car Park private int capacity; // Capacity of the Car Park - how many cars it can hold private int carsIn; // Number of cars currently in the Car Park private String[] carsParked; /** Constructor for Carparks * @param loc - the Location of the Carpark * @param cap - the Capacity of the Carpark */ public Carpark (String locations, int room) { location = locations; capacity = room; } /** Records entry of a car into the car park */ public void driveIn() { carsIn = carsIn + 1; } /** Records the departure of a car from the car park */ public void driveOut() { carsIn = carsIn - 1; } /** Returns a String representation of information about the carpark */ public String getAsString() { return location + "\nCapacity: " + capacity + " Currently parked: " + carsIn + "\n*************************\n"; } }

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