feat: CON-1700 Support flexible outcalls and pay-as-you-go pricing in pocket-ic

[eichhorl]

Replica Changes

The option to choose pay-as-you-go pricing for non- and fully-replicated outcalls is now gated behind the same feature flag that is already gating flexible outcalls (which use pay-as-you-go pricing by default).

Pocket-ic Changes

Added

• Add a function and the type to mock the responses of the committee nodes of a pending flexible canister HTTP outcall.
• Add the replication field on CanisterHttpRequest describing how a pending canister HTTP outcall is replicated across the nodes of its subnet: FullyReplicated, NonReplicated, or Flexible with the outcall's total_requests, min_responses, and max_responses.
• Add the pricing_version field on CanisterHttpRequest, reporting whether a pending canister HTTP outcall is priced with the Legacy or the PayAsYouGo pricing model.
• Enabling beta features (IcpConfig::beta_features passed to PocketIcBuilder::with_icp_config) now also enables the pay-as-you-go pricing model, which covers both the flexible_http_request management canister endpoint (whose outcalls are always priced that way) and the pricing_version field of http_request (through which a fully replicated or non-replicated outcall can select it).

Changed

• Mocked canister HTTP responses report the cycles their node actually spent on the outcall, instead of reporting no spend at all.
• Mocking a canister HTTP response whose reject message exceeds 1 KiB now fails. Such a response is not one any node could have reported.
• A node that cannot pay for gossiping its mocked reject reports an out-of-cycles reject instead of the mocked one, matching what a node of a real subnet does under pay-as-you-go pricing.

[Copilot]

Pull request overview

Adds flexible HTTP outcall mocking and pay-as-you-go pricing support across the replica, PocketIC server, client API, and tests.

Changes:

• Gates pay-as-you-go pricing with the flexible-outcalls feature flag.
• Adds flexible response mocking plus replication and pricing metadata.
• Accounts for mocked response costs and validates reject-message limits.

Reviewed changes

Copilot reviewed 25 out of 26 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
rs/types/types/src/canister_http.rs	Gates selectable pricing versions.
rs/types/management_canister_types/src/lib.rs	Re-exports pricing constants.
rs/types/management_canister_types/src/http.rs	Defines gated pricing versions.
rs/tests/networking/canister_http_correctness_test.rs	Updates context construction.
rs/state_machine_tests/src/lib.rs	Supports per-node response receipts.
rs/pocket_ic_server/src/state_api/state.rs	Adds mock-validation errors.
rs/pocket_ic_server/src/state_api/routes.rs	Adds the flexible-mocking route.
rs/pocket_ic_server/src/pocket_ic.rs	Implements metadata, pricing, and flexible mocking.
rs/pocket_ic_server/src/beta_features.rs	Enables flexible HTTP requests.
rs/pocket_ic_server/CHANGELOG.md	Documents server changes.
rs/pocket_ic_server/Cargo.toml	Adds the pricing dependency.
rs/pocket_ic_server/BUILD.bazel	Adds the Bazel pricing dependency.
rs/https_outcalls/client/src/client.rs	Enables pay-as-you-go request processing.
rs/execution_environment/src/execution_environment/tests.rs	Tests pricing feature gating.
rs/execution_environment/src/execution_environment.rs	Passes pricing-gate state into requests.
packages/pocket-ic/tests/tests.rs	Adds comprehensive integration coverage.
packages/pocket-ic/test_canister/src/canister.rs	Adds raw and flexible outcall methods.
packages/pocket-ic/test_canister/canister.did	Exposes the new test methods.
packages/pocket-ic/src/nonblocking.rs	Adds the asynchronous flexible-mocking API.
packages/pocket-ic/src/lib.rs	Adds the synchronous flexible-mocking API.
packages/pocket-ic/src/common/rest.rs	Defines new REST request and metadata types.
packages/pocket-ic/HOWTO.md	Documents flexible outcalls and pricing.
packages/pocket-ic/CHANGELOG.md	Records client-facing changes.
packages/pocket-ic/Cargo.toml	Adds the test serialization dependency.
packages/pocket-ic/BUILD.bazel	Adds corresponding test dependencies.
Cargo.lock	Locks the added dependencies.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[zeropath-ai]

✅ No security or compliance issues detected. Reviewed everything up to 6391b16.

Security Overview

• 🔎 Scanned files: 26 changed file(s)
• 🔗 Scan Link: https://zeropath.com/app/repositories/f5e9d2bb-29a4-4b64-902a-391d65fd8b2d?scanId=c775eea0-80f4-4be8-8348-b9697bf2c3f5&codeScanTypes=PrScan&tab=issues

Detected Code Changes

Change Type	Relevant files
Enhancement	► packages/pocket-ic/BUILD.bazel     Add dependency on rs/types/management_canister_types
Enhancement	► packages/pocket-ic/CHANGELOG.md     Document added features for mockable/managed HTTP interfaces and pricing/versioning
Enhancement	► packages/pocket-ic/Cargo.toml     Add serde_bytes as workspace dependency
Enhancement	► packages/pocket-ic/HOWTO.md     Add section on Flexible canister HTTP outcalls and pay-as-you-go pricing details
Enhancement	► packages/pocket-ic/src/common/rest.rs     Introduce CanisterHttpReplication and CanisterHttpPricingVersion enums     Extend RawCanisterHttpRequest with replication and pricing_version     Extend CanisterHttpRequest with replication and pricing_version     Add RawMockFlexibleCanisterHttpResponse and MockFlexibleCanisterHttpResponse types     Add conversions between Raw and Strongly-Typed representations
Enhancement	► packages/pocket-ic/src/lib.rs     Expose MockFlexibleCanisterHttpResponse in API surface     Update PocketIc docs to mention mock_flexible_canister_http_response
Enhancement	► packages/pocket-ic/src/nonblocking.rs     Add mock_flexible_canister_http_response method (async) and documentation notes
Enhancement	► packages/pocket-ic/test_canister/canister.did     Add canister_http_raw and flexible_canister_http entry points (Raw/Raw result types)
Enhancement	► packages/pocket-ic/test_canister/src/canister.rs     Update canister to map errors with Into and add canister_http_raw and flexible_canister_http helpers
Enhancement	► packages/pocket-ic/tests/tests.rs     Extend tests to include flexible canister HTTP outcalls with new types, pricing versions, and transforms     Add numerous test scenarios for flexible outcalls, timeouts, partial responses, and per-replica pricing behavior
Enhancement	► (General) Various tests and test helpers to cover flexible canister HTTP outcalls, pricing versions, and transforms