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Fix base64 deserialization when JSON encoder escapes forward slashes (#1342)

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
This commit is contained in:
Copilot 2026-02-23 14:20:25 -05:00 • committed by GitHub
commit 774a1dba35
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1 changed files with 710 additions and 48 deletions
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17
src/ModelContextProtocol.Core/Protocol/ResourceContents.cs
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@ -80,6 +80,7 @@ public abstract class ResourceContents
string? uri = null;
string? mimeType = null;
ReadOnlyMemory<byte>? blob = null;
ReadOnlyMemory<byte>? decodedBlob = null;
string? text = null;
JsonObject? meta = null;
@ -105,7 +106,14 @@ public abstract class ResourceContents
break;
case "blob":
blob = reader.HasValueSequence ? reader.ValueSequence.ToArray() : reader.ValueSpan.ToArray();
if (!reader.ValueIsEscaped)
{
blob = reader.HasValueSequence ? reader.ValueSequence.ToArray() : reader.ValueSpan.ToArray();
}
else
{
decodedBlob = reader.GetBytesFromBase64();
}
break;
case "text":
@ -122,6 +130,13 @@ public abstract class ResourceContents
}
}
if (decodedBlob is not null)
{
var blobResource = BlobResourceContents.FromBytes(decodedBlob.Value, uri ?? string.Empty, mimeType);
blobResource.Meta = meta;
return blobResource;
}
if (blob is not null)
{
return new BlobResourceContents