Protocol 27 Support

[Shaptic]

• xdr: regenerate for Protocol 27 CAP-0071

  • Bump XDR to stellar-xdr@68fa1ac (CAP-0071 address-bound/delegated Soroban credentials STELLAR_VALUE_EMPTY_TX_SET). goxdr and Ruby xdrgen cannot parse #ifdef, so CAP_0071 gates are resolved with 'stellar-xdr xfile preprocess' (rs-stellar-xdr findpaths: simplify simplepath/order_book.go and fix order_book_test.go #503) before codegen, driven by XDR_FEATURES. Regenerated xdr/, gxdr/, and xdr/xdr_views_generated.go.
  • randxdr: add IsDeepNestedDelegates preset to cap recursion through CAP-71 SorobanDelegateSignature.nestedDelegates, mirroring the existing IsDeepAuthorizedInvocationTree handling for subInvocations. Without it TestView_RandXDR_RawRoundTrip stack-overflows on unbounded random trees.

• go.mod: bump go-xdr to 0bf8f49 (raise DecodeDefaultMaxDepth to 1500)

  • Pulls in decoder: raise default max depth to 1500 and add DecodeUnlimitedDepth go-xdr#32 which lifts the default XDR decode depth from 250 → 1500 and adds the DecodeUnlimitedDepth sentinel. Necessary so the CAP-71 SorobanDelegateSignature delegate chain (which the protocol allows to nest arbitrarily, with only Soroban's runtime trap policing depth) can be decoded by stellar-core LCM consumers without stalling.

• ci: bump go-test timeout to 20m

  • The default per-test-binary timeout is 10m, which is borderline for this repo's race-cover suite (xdr/ alone takes ~230s with -race locally, longer on slower CI runners). CAP-71's added generated XDR pushed the run past 10m, killing the test job with SIGTERM before xdr/ and txnbuild/ finished.
  • 20m gives generous headroom and matches the conservative timeout other Stellar Go repos use for race+cover runs.

• txnbuild: cap CAP-71 nestedDelegates recursion in TestOperationCoverage

  • TestOperationCoverage generates 10,000 random gxdr.Operation values which now include InvokeHostFunctionOp.auth[].credentials carrying the new SorobanAddressCredentialsWithDelegates with the recursive nestedDelegates field. Without bounding, the random generator recurses unboundedly through SorobanDelegateSignature.nestedDelegates and the test hangs past go test's default 10-minute per-binary timeout, killing the CI test matrix.

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	github.com/​stellar/​go-xdr@​v0.0.0-20260423131911-a87d4d0789c3 ⏵ v0.0.0-20260529210834-0bf8f4956364	+1

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[Copilot]

Pull request overview

This PR updates the SDK for Stellar Protocol 27 by regenerating XDR artifacts for CAP-0071 (including new Soroban credential / authorization variants) and adjusting generation/test infrastructure to handle newly introduced recursive structures safely and within CI time limits.

Changes:

• Regenerate xdr/, gxdr/, and XDR “views” to include new Protocol 27/CAP-0071 types and enum arms.
• Add recursion-capping presets for CAP-71 delegate chains in randxdr and apply them to txnbuild coverage tests.
• Bump github.com/stellar/go-xdr and extend GitHub Actions go test timeout to reduce CI flakes/timeouts.

Reviewed changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
xdr/xdr_views_generated.go	Regenerated view types; adds CAP-0071-related views and new discriminants.
xdr/xdr_generated.go	Regenerated Go XDR types/unions/enums to include new Protocol 27/CAP-0071 definitions.
gxdr/xdr_generated.go	Regenerated goxdr-based types/enums/unions for the updated XDR schema.
xdr/Stellar-transaction.x	Updates XDR schema with Soroban delegate signature structures and new credential variants.
xdr/Stellar-ledger-entries.x	Extends EnvelopeType with ENVELOPE_TYPE_SOROBAN_AUTHORIZATION_WITH_ADDRESS.
xdr/Stellar-types.x	Minor schema formatting change as part of regeneration.
xdr/xdr_commit_generated.txt	Updates recorded upstream stellar-xdr commit used for generation.
randxdr/presets.go	Adds IsDeepNestedDelegates selector and applies it to canonical presets.
txnbuild/operation_test.go	Applies new preset to avoid runaway recursion during random operation generation.
Makefile	Updates XDR commit and adds a preprocessing step prior to codegen.
go.mod	Bumps github.com/stellar/go-xdr dependency.
go.sum	Updates module sums for the new go-xdr version.
.github/workflows/go.yml	Increases go test timeout to 20 minutes for race+cover runs.

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