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Add C# dotnet exact EXI codec implementation

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🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
ChiKyun Kim
2025-09-10 13:02:58 +09:00
parent 35af323ff0
commit 90dc39fbe8
34 changed files with 2839 additions and 14 deletions
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26
csharp/dotnet/V2G/V2GProtocol.cs
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@@ -8,6 +8,7 @@
* (at your option) any later version.
*/
using System;
using V2GDecoderNet.EXI;
namespace V2GDecoderNet.V2G
@@ -57,21 +58,26 @@ namespace V2GDecoderNet.V2G
return inputData ?? Array.Empty<byte>();
}
// Check for V2G Transfer Protocol header
if (inputData[0] == V2G_PROTOCOL_VERSION && inputData[1] == V2G_INV_PROTOCOL_VERSION)
// First, look for V2G Transfer Protocol header anywhere in the data
// Pattern: 0x01 0xFE 0x80 0x01 (V2GTP header for ISO/DIN/SAP)
for (int i = 0; i <= inputData.Length - 8; i++)
{
ushort payloadType = (ushort)((inputData[2] << 8) | inputData[3]);
if (payloadType == V2G_PAYLOAD_ISO_DIN_SAP || payloadType == V2G_PAYLOAD_ISO2)
if (inputData[i] == V2G_PROTOCOL_VERSION && inputData[i + 1] == V2G_INV_PROTOCOL_VERSION)
{
// Valid V2GTP header detected: skip 8-byte header
var exiBody = new byte[inputData.Length - 8];
Array.Copy(inputData, 8, exiBody, 0, exiBody.Length);
return exiBody;
ushort payloadType = (ushort)((inputData[i + 2] << 8) | inputData[i + 3]);
if (payloadType == V2G_PAYLOAD_ISO_DIN_SAP || payloadType == V2G_PAYLOAD_ISO2)
{
// Valid V2GTP header found: skip 8-byte header to get EXI body
int exiStart = i + 8;
var exiBody = new byte[inputData.Length - exiStart];
Array.Copy(inputData, exiStart, exiBody, 0, exiBody.Length);
return exiBody;
}
}
}
// Look for EXI start pattern anywhere in the data
// If no V2GTP header found, look for EXI start pattern anywhere in the data
for (int i = 0; i <= inputData.Length - 2; i++)
{
ushort pattern = (ushort)((inputData[i] << 8) | inputData[i + 1]);