Subsystem: protocol-curr (Current-Protocol XDR Type Definitions)

Overview

The src/protocol-curr/xdr/ directory contains the canonical XDR (External Data Representation) type definitions for the current protocol version of stellar-core. These .x files define all on-wire and on-disk data structures used by the Stellar network. Corresponding .h files are auto-generated C++ headers from these XDR definitions via the xdrpp code generator. Never edit .h files directly; always modify the .x source files.

The directory is a git submodule pointing to the official Stellar XDR repository.

File Organization and Dependency Graph

The XDR files form a dependency DAG via %#include directives:

Stellar-types.x                  (base types, no dependencies)
├── Stellar-SCP.x                (consensus protocol types)
├── Stellar-contract.x           (smart contract value types)
│   └── Stellar-contract-config-setting.x  (Soroban config settings)
├── Stellar-contract-env-meta.x  (contract environment metadata)
├── Stellar-contract-meta.x      (contract metadata)