Getting stuck with BigInteger.toByteArray

I write code that gets data in printable hex representation, converts it to bytes and writes it down to the file (pictures in RTF are stored in this way, so to be precise, I extract pictures from RTF). And here I see the strange behaviour my string is "89504e47..." but file, converted to hex starts with "0089504e47". Could someone explain why BigInteger.toByteArray have added '0' to the byte array? I reproduced this on this simple code (identical to my app's code)
BigInteger temp = new BigInteger("89", 16);
System.out.println("byte: " + temp.toByteArray()[0]);output:
byte: 0

The javadoc for toByteArray says:
"Returns a byte array containing the two's-complement representation of this BigInteger. The byte array will be in big-endian byte-order: the most significant byte is in the zeroth element. The array will contain the minimum number of bytes required to represent this BigInteger, including at least one sign bit"
The byte that you see as zero is the one that contains the sign bit.
Kaj

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Try resetting PRAM and SMC.
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Need to check tls/ssl but getting stuck with "You must provide a value expression on the right-hand side of the '-' operator."

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or how to specify which part of the property its checking: thanks a ton
http://blog.whatsupduck.net/2014/10/checking-ssl-and-tls-versions-with-powershell.html
line with issues:
$ProtocolNames = [System.Security.Authentication.SslProtocols] | gm -static -MemberType Property | where-object{$_.Name -notin @("Default","None") | %{$_.Name}
You must provide a value expression on the right-hand side of the '-' operator.
At S:\scripts\test23.ps1:50 char:126
+ $ProtocolNames = [System.Security.Authentication.SslProtocols] | gm -static -MemberType Property | where-object{$_.Name - <<<< noti
n @("Default","None") | %{$_.Name}
+ CategoryInfo : ParserError: (:) [], ParseException
+ FullyQualifiedErrorId : ExpectedValueExpression
<#
.DESCRIPTION
Outputs the SSL protocols that the client is able to successfully use to connect to a server.
.NOTES
Copyright 2014 Chris Duck
http://blog.whatsupduck.net
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
.PARAMETER ComputerName
The name of the remote computer to connect to.
.PARAMETER Port
The remote port to connect to. The default is 443.
.EXAMPLE
Test-SslProtocols -ComputerName "www.google.com"
ComputerName : www.google.com
Port : 443
KeyLength : 2048
SignatureAlgorithm : rsa-sha1
Ssl2 : False
Ssl3 : True
Tls : True
Tls11 : True
Tls12 : True
#>
function Test-SslProtocols {
param(
[Parameter(Mandatory=$true,ValueFromPipelineByPropertyName=$true,ValueFromPipeline=$true)]
$ComputerName,
[Parameter(ValueFromPipelineByPropertyName=$true)]
[int]$Port = 443
begin {
$ProtocolNames = [System.Security.Authentication.SslProtocols] | gm -static -MemberType Property | where-object{$_.Name -notin @("Default","None") | %{$_.Name}
process {
$ProtocolStatus = [Ordered]@{}
$ProtocolStatus.Add("ComputerName", $ComputerName)
$ProtocolStatus.Add("Port", $Port)
$ProtocolStatus.Add("KeyLength", $null)
$ProtocolStatus.Add("SignatureAlgorithm", $null)
$ProtocolNames | %{
$ProtocolName = $_
$Socket = New-Object System.Net.Sockets.Socket([System.Net.Sockets.SocketType]::Stream, [System.Net.Sockets.ProtocolType]::Tcp)
$Socket.Connect($ComputerName, $Port)
try {
$NetStream = New-Object System.Net.Sockets.NetworkStream($Socket, $true)
$SslStream = New-Object System.Net.Security.SslStream($NetStream, $true)
$SslStream.AuthenticateAsClient($ComputerName, $null, $ProtocolName, $false )
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$ProtocolStatus["KeyLength"] = $RemoteCertificate.PublicKey.Key.KeySize
$ProtocolStatus["SignatureAlgorithm"] = $RemoteCertificate.PublicKey.Key.SignatureAlgorithm.Split("#")[1]
$ProtocolStatus.Add($ProtocolName, $true)
} catch {
$ProtocolStatus.Add($ProtocolName, $false)
} finally {
$SslStream.Close()
[PSCustomObject]$ProtocolStatus
Test-SslProtocols -ComputerName "www.google.com"

V2 version:
function Test-SslProtocols {
param(
[Parameter(
Mandatory=$true,
ValueFromPipelineByPropertyName=$true,
ValueFromPipeline=$true
)]$ComputerName,
[Parameter(
ValueFromPipelineByPropertyName=$true
)][int]$Port = 443
begin {
$protocols=[enum]::GetNames([System.Security.Authentication.SslProtocols])|?{$_ -notmatch 'none|default'}
process {
foreach($protocol in $protocols){
$ProtocolStatus = @{
ComputerName=$ComputerName
Port=$Port
KeyLength=$null
SignatureAlgorithm=$null
Protocol=$protocol
Active=$false
$Socket = New-Object System.Net.Sockets.Socket('Internetwork','Stream', 'Tcp')
$Socket.Connect($ComputerName, $Port)
try {
$NetStream = New-Object System.Net.Sockets.NetworkStream($Socket, $true)
$SslStream = New-Object System.Net.Security.SslStream($NetStream, $true)
$SslStream.AuthenticateAsClient($ComputerName, $null, $protocol, $false )
$RemoteCertificate = [System.Security.Cryptography.X509Certificates.X509Certificate2]$SslStream.RemoteCertificate
$protocolstatus.Active=$true
$ProtocolStatus.KeyLength = $RemoteCertificate.PublicKey.Key.KeySize
$ProtocolStatus.SignatureAlgorithm = $RemoteCertificate.PublicKey.Key.SignatureAlgorithm.Split("#")[1]
catch {
Write-Host 'Failed'
finally {
New-Object PsObject -Property $ProtocolStatus
$SslStream.Close()
Test-SslProtocols -ComputerName www.google.com
¯\_(ツ)_/¯

My ipod touch get restart by itself and just get stuck with the apple logo, What can i do?

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~/Library/Containers/com.apple.mail
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Desperate user need help. My GPIB instrument get stuck with my labview program frequently

Hello to all labview users,
i am a beginner in using labview. I am currently writting a labview program to automatically control a digital control rotator HD201e and a network analyzer 8720a to work with the anechoic chamber. The program receives an initial position, amount of increment and # of steps. My program will then ask the controller to rotate to the initial position and at the meantime, the program will monitor the position of the rotator to ensure the requested position is reached. After that, at the position, the program will ask the NA to perform a reading of the measurement. Once the reading is done, the program will ask the controller to rotate to the next position and does a reading of the measurement and so on.
My program seems to be able to perform the tasks; however, the dig.controller part seems to get stuck around 50% of the time when running the program. Sometimes, even the controller receives the requested position (can be seen from the lcd screen of the controller), the rotator just simply would not rotate; also, sometimes, the controller just simply does not respond when sending the command of moving a position, as in the debug mode (the one with a lightbulb), i see that i got "ok" on all the blocks in the writing portion ofthe program, but the controller just doesnt seem to receive the position (as seen no new position received from the lcd screen) and the cursor on the lcd screen blinks weirdly, due to that problem, my program will then get stuck in an infinite loop.....
Usually, that problem occurs after few positions have been reached.....
so, when that happens, i have to stop my program and re-run it. that means the program will have to re-do the measurement that were read previously....
sometimes i have to stop and re-run my program several times to get all the measurement of all the positions done.....so...that bug renders that program to be an unefficient program.
I have been trying to resolve that bug for weeks...but no success....i have tried to put some wait time between each block....result is not much different...
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Any advice and or opinion would be greatly appreciated....
PS: i attached the controller part of my program and the overall program
desperate happyguy......
Happy guy
~ currently final year undergraduate in Electrical Engr. Graduating soon! Yes!
~ currently looking for jobs : any position related to engineering, labview, programming, tech support would be great.
~ humber learner of LabVIEW lvl: beginner-intermediate
Attachments:
HD201_Controld.jpg ‏231 KB
AChamber_Measurements_v1d.jpg ‏857 KB
AChamber_Measurements_v1d3.jpg ‏463 KB

hi xseadog
i got what you meant about the gpib reference
actually, that final frame works because the gpib reference is already done inside that subvi.
but my problem doesnt arise from that. most of the time ive seen, it arises between the writing frame and the while loop frame. as i mentionned, sometimes. the controller just simply doesnt rotate even i can see the requested position display on the controller lcd screen; also sometimes, just the controller is stuck without acknowledging the write position command. but in labview...while in debug mode. it is shown ok on the block.
Happy guy
~ currently final year undergraduate in Electrical Engr. Graduating soon! Yes!
~ currently looking for jobs : any position related to engineering, labview, programming, tech support would be great.
~ humber learner of LabVIEW lvl: beginner-intermediate
Attachments:
HD-201 RPosd.jpg ‏39 KB

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Async call gets stuck with pending status

Hi,
I am working on Tasklayer where need to invoke Async. call, the .bpel file has Invoke activity and below that it has pick activity with branches one for OnMessage and another is also OnMessage but, this is for fault. Now, when it invokes the Async. what i see in the instance is that the OnMessage activity gets stuck in Pending status, it doesn't proceed further. Kindly let me know if any one has faced similar issue.
Thanks & Regards,
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Hi Sanjay,
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Try:
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Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
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Go to Settings > General > Reset and tap Reset All Settings.
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Safe Mode - About

Getting stuck with BigInteger.toByteArray

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