Reading response data in hexa

Question

after i send this packet
byte[] data2 = { 0x00, 0x0E, 0x00, 0x01, 0x00, 0x00, 0x00, 0x08, 0x4A, 0x43, 0x50, 0x55, 0x7C, 0x47, 0x45, 0x54 };
stream.Write(data2, 0, data2.Length);
System.Threading.Thread.Sleep(1000);

i'm trying to get some informations from server response.

data2 = new Byte[1024];
bytes = stream.Read(data2, 0, data2.Length);
string responseData = System.Text.Encoding.ASCII.GetString(data2, 0, bytes);
string response = find_str_from_to2(responseData, "galexu", "0|A|CC|");
string intohex = convertAsciiTextToHex(response);

static String convertAsciiTextToHex(String i_asciiText)
{
StringBuilder sBuffer = new StringBuilder();
for (int i = 0; i < i_asciiText.Length; i++)
{
sBuffer.Append(Convert.ToInt32(i_asciiText[i]).ToString("x"));
}
return sBuffer.ToString().ToUpper();
}

the problem is that if the responseData is encoded as: ASCII, UTF-8... etc it doesn't get the real information from the server response.

any ideas?

thank you.

Vulpes · Answer

If you change the format in the above method from X2 to X1 then it will suppress the leading zero if the character code is less than 0x10 but still return 2 hex digits otherwise.

andrei hooba · Answer

thank you. i tought this wouldn't be necessary but.. i need it to contain only 1 number for ex.: test[3]=05; i need only the '5' number..

Vulpes · Answer

I was thinking before that the server would probably be in Romania or thereabouts but if it's in Germany then it would make sense for a Western European encoding to be used. ISO-8859-1 is a single byte encoding which is the same as Unicode for characters 0 - 255. To get the hex representation of the bytes into a string array you could use this method: static String[] convertAsciiTextToHexArray(String i_asciiText) { string[] hex = new string[i_asciiText.Length]; for(int i = 0; i return hex; } and call with: string[] test = convertAsciiTextToHexArray(response); foreach(string t in test) Console.Write({0}  t);

andrei hooba · Answer

As 852: 000000050000010200001314200001314200000315400005208000001C9000001C900004B2200000 2141000000050000000200000000000027100000012D800000002004025803100000000000000001 0700000003411361D3000000004014715B25140000000043D7600000000003000000000000000000 0E000100000008 as 28592: 0000000500000102000013880000138800000310D00005208000001900000019000004A17E000002 3900000005000000020000000000002710000001F4000000020040DF310000000000000000860000 000341136115500000000401509815400000000439E6000000000030000000000000000000E00010 0000008 the server is situated in germany. AS ISO-8859-1 it seems to be OK. just for not opening a new thread how can i split these data now into a string[] test to be like: test[0]= 00; test[1]=00; test[2]=00; test[3]=05; ...

Vulpes · Answer

That method looks fine to me as well. So it looks like you're using the wrong encoding. Looking at those you've tried Default seems the closest overall though Windows 1250 was the only one that got past 0x88. There are a couple of other Eastern European encodings which might be worth trying 852 and 28592. Do you know anything about the server such as where it's sited?

andrei hooba · Answer

static string find_str_from_to2(string sMain string sFrom string sTo) { int iBegSubstr = sMain.IndexOf(sFrom); if (iBegSubstr == -1) return -1; iBegSubstr += sFrom.Length; int iEndSubstr = sMain.IndexOf(sTo iBegSubstr); if (iEndSubstr == -1) return -1; return sMain.Substring(iBegSubstr iEndSubstr - iBegSubstr); } As ASCII: 00000005000001020000133F0000133F0000033F000052080000013F0000013F00004C2C0000003F 000000050000000200000000000027100000013F0000000200403F3100000000000000003F000000 034113613F00000000403F3F3F00000000433F6000000000030000000000000000000E0001000000 08 As UTF-8: 0000000500000102000013FFFD000013FFFD000003FFFD00005208000001FFFD000001FFFD00004C 2C000000FFFD00000005000000020000000000002710000001FFFD000000020040FFFD3100000000 00000000FFFD00000003411361FFFD0000000040558FFFD0000000043FFFD6000000000030000000 000000000000E000100000008 As Default: 00000005000001020000132C60000132C6000003E800005208000001900000019000004C2C000000 C800000005000000020000000000002710000001F4000000020040DF310000000000000000202000 000003411361E00000000040D52DCC0000000004317E6000000000030000000000000000000E0001 00000008 As GetEncoding(1250): 0000000500000102000013880000138800000310D00005208000001900000019000004C900000012 C00000005000000020000000000002710000001F4000000020040DF3100000000000000002020000 00003411361155000000004015098154000000004317E6000000000030000000000000000000E000 100000008 but it should be like: 00000005000001020000138800001388000003E800005208000001900000019000004C2C000000C8 00000005000000020000000000002710000001F4000000020040DF31000000000000000086000000 03411361E00000000040D598C000000000439E6000000000030000000000000000000E0001000000 08 these data

Vulpes · Answer

Provided that your find_str_from_to2 method does what it says on the tin your code looks OK to me. Can you give an example of what you actually get and what it should be?