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  1. I would like to programmatically check to see if a given tracker has information on the torrent I specify. This requires that the SHA-1 Info Hash of a torrent be encoded to make valid requests. I read from: http://nakkaya.com/2009/12/03/bittorrent-tracker-protocol/ If you don't pay attention to the spec and send this directly to tracker you will get an error this should be in URL Encoded form. Padding every two chars with % sign also doesn't work, been there done that don't waste your time. Any hex in the hash that corresponds to a unreserved character should be replaced, a-z A-Z 0-9 -_.~ Partition the hex in to chunks of two and check if the hex corresponds to any of these values, if they do replace them with the unreserved char. So that a hash such as, 123456789abcdef123456789abcdef123456789a becomes, %124Vx%9a%bc%de%f1%23Eg%89%ab%cd%ef%124Vx%9a notice that hex 34 became 4 which is what it is in ASCII. You can test the correctness of your hashes using the tracker url but don't request from announce request from file, http://some.tracker.com/file?info_hash=hash If you get a torrent back that means you have the correct hash. I have tried the above and failed. Here's my code: $testStr = "123456789abcdef123456789abcdef123456789a" ConsoleWrite(_EncodeHash($testStr) & @CRLF) Func _EncodeHash($sString) If (Not IsString($sString)) Or $sString = "" Then Return SetError(1, 0, 0) Local $aArray = StringRegExp($sString, "(?s).{1," & 2 & "}", 3), $sEncodedHash For $i = 0 To UBound($aArray) -1 If StringInStr($sString, Chr(Dec($aArray[$i]))) Then $sEncodedHash &= Chr(Dec($aArray[$i])) Else $sEncodedHash &= "%" & $aArray[$i] EndIf Next Return $sEncodedHash EndFuncIf you follow the first link in my post there is an example but I'm unfamiliar with the language being used. Thanks for any help.
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