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## Summary - add validated protocol-version, capability, and session identifier types - define explicit `ClientToHost` and `HostToClient` JSON envelopes for connection negotiation and session open/close acknowledgements - reject invalid states and unknown fields during decoding, with explicit wire-format and round-trip coverage ## Why This establishes the transport-neutral encoding shape needed to build and test the new code-mode host incrementally. Cell, tool callback, and failure-domain messages are intentionally deferred until their actors and behavior tests establish the required semantics. This is additive protocol scaffolding and does not change the current production code-mode implementation. ## Validation
20 lines
682 B
Rust
20 lines
682 B
Rust
use serde::Deserialize;
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use serde::Serialize;
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use super::Capability;
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use super::SupportedProtocolVersions;
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/// Explains why connection negotiation was rejected before any session opened.
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#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
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#[serde(deny_unknown_fields, tag = "type", rename_all_fields = "camelCase")]
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pub enum HandshakeRejectReason {
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#[serde(rename = "noCompatibleVersion")]
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NoCompatibleVersion {
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supported_versions: SupportedProtocolVersions,
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},
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#[serde(rename = "missingRequiredCapability")]
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MissingRequiredCapability { capability: Capability },
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#[serde(rename = "invalidHello")]
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InvalidHello { message: String },
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}
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