2.1.2

Fixed

• Make SubscriptionStream initializer public (#975): The SubscriptionStream initializer was inadvertently scoped to package access, preventing adopters from writing custom conformances to the public SubscriptionNetworkTransport protocol. The initializer is now public. Fixes #3637. Thank you to @ahou8 for raising the issue.
• Fix \r\n in GraphQL descriptions generating invalid Swift comments (#961): GraphQL field descriptions containing \r\n (Windows CRLF) line endings caused codegen to emit invalid Swift — only the first line received the /// doc comment prefix and subsequent lines were emitted as uncommented text, breaking compilation. Fixes #3553. Thank you to @iPhoneNoobDeveloper for the contribution.

1.25.6

Fixed

• Fix \r\n in GraphQL descriptions generating invalid Swift comments (#965): GraphQL field descriptions containing \r\n (Windows CRLF) line endings caused codegen to emit invalid Swift — only the first line received the /// doc comment prefix and subsequent lines were emitted as uncommented text, breaking compilation. Backport of #961. Fixes #3553. Thank you to @iPhoneNoobDeveloper for the contribution.

2.1.1

Fixed

• Fix cache read failure for nested arrays of objects (#938): Reading nested arrays of objects (2D, 3D, etc.) from the normalized cache threw a JSONDecodingError.wrongType error. Reference resolution now handles array nesting at any depth. Fixes #3609. Thank you to @gurusekhar-ibm for raising the issue.
• Fix incorrect default mock value when first enum case is deprecated (#949): When deprecatedEnumCases was set to .exclude, the mock codegen incorrectly used the first enum case as the default value in convenience initializers — even if that case was deprecated and excluded from the generated enum, causing a compile error. Fixes #3634. Thank you to @cswelin for raising the issue.
• Fix recursive OneOf input object enum cases not marked indirect (#954): A @oneOf input object that directly references itself generated a Swift enum that failed to compile with Recursive enum is not marked 'indirect'. Self-referencing cases are now correctly marked indirect. Fixes #3633. Thank you to @ahou8 for raising the issue.

1.25.5

Fixed

• Fixed concurrency crash in compileGraphQLResult on Swift 6.3/macOS 26 (#929): Serialized async let calls in compileGraphQLResult to work around a Swift concurrency runtime crash triggered when code generation is used in an AsyncParsableCommand. See PR #942. Thank you to @m4p for the contribution.

2.1.0

New

• WebSocket Transport: Apollo iOS 2.0 now supports WebSocket connections using the graphql-transport-ws protocol for subscriptions, queries, and mutations. See the WebSocket Transport documentation for setup and usage details.
• Swift 6.2 MainActor default isolation support (#925): Added a markTypesNonisolated codegen option that emits nonisolated on all generated type declarations. This prevents compilation errors when SWIFT_DEFAULT_ACTOR_ISOLATION = MainActor is enabled. The option defaults to true when the codegen tool is compiled with Swift 6.2+.
• ApolloURLSession delegate injection (#899): Added support for injecting a custom URLSessionTaskDelegate into ApolloURLSession, enabling delegate callback handling. Thank you to @hammy-e for the contribution.

Fixed

• Fix concurrency issue in compileGraphQLResult (#929): Resolved a Swift compiler crash triggered by async let stack management during code generation in AsyncParsableCommand contexts. Thank you to @m4p for the contribution.

New

• WebSocket Transport: Apollo iOS 2.0 now supports WebSocket connections using the graphql-transport-ws protocol for subscriptions, queries, and mutations. See the WebSocket Transport documentation for setup and usage details.
• ApolloURLSession delegate injection (#899): Added support for injecting a custom URLSessionTaskDelegate into ApolloURLSession, enabling delegate callback handling. Thank you to @hammy-e for the contribution.
• Make JSONRequest.useGetForQueries mutable (#897): The useGetForQueries property on JSONRequest is now a var, allowing interceptors to mutate the request directly instead of copying it. Thank you to @nevil for the contribution.

Fixed

• Add preflight HTTP header for CSRF prevention (#900): Added the X-Apollo-Operation-Name header to requests to satisfy Apollo Router's CSRF prevention requirements.

Improved

• Use dictionary for objectType(forTypename:) lookup (#918): Replaced the generated switch statement in SchemaMetadata.objectType(forTypename:) with a static dictionary lookup, improving deserialization performance by ~75% for schemas with many types (4000+). Thank you to @erneestoc for the contribution.

1.25.4

Improvement

• Use dictionary instead of switch for objectType(forTypename:) lookup (#3631): The generated SchemaMetadata.objectType(forTypename:) method now uses a static dictionary for O(1) hash-based lookup instead of a switch statement that performed O(n) linear scanning. For schemas with many object types (~4300 types), this improves deserialization times by approximately 75%. See PR #926.

2.1.0-rc-1

New

• WebSocket Transport: Apollo iOS 2.0 now supports WebSocket connections using the graphql-transport-ws protocol for subscriptions, queries, and mutations. See the WebSocket Transport documentation for setup and usage details.
• ApolloURLSession delegate injection (#899): Added support for injecting a custom URLSessionTaskDelegate into ApolloURLSession, enabling delegate callback handling. Thank you to @hammy-e for the contribution.
• Make JSONRequest.useGetForQueries mutable (#897): The useGetForQueries property on JSONRequest is now a var, allowing interceptors to mutate the request directly instead of copying it. Thank you to @nevil for the contribution.

Fixed

• Add preflight HTTP header for CSRF prevention (#900): Added the X-Apollo-Operation-Name header to requests to satisfy Apollo Router's CSRF prevention requirements.

Improved

• Use dictionary for objectType(forTypename:) lookup (#918): Replaced the generated switch statement in SchemaMetadata.objectType(forTypename:) with a static dictionary lookup, improving deserialization performance by ~75% for schemas with many types (4000+). Thank you to @erneestoc for the contribution.

2.0.6

Fixed

• Fix HTTP method selection (#877): The APQ retry logic was overriding the HTTP method selected for all queries. Thank you to @3redrubies for raising the issue.
• Prevent crashes in Dictionary initialization with duplicate keys (#884): Dictionary initialization using literal elements now uses a safer internal initializer to prevent crashes when duplicate keys are used. In the event that duplicate keys are present, the value associated with the first key will override all other values. Thank you to @adysart for raising the issue.

2.0.5

• Fix data race in AsyncReadWriteLock (#862): This fixes issue #3616. Thank you to @AlexPan1992 for raising the issue.
• Set URLRequest.cachePolicy on GET requests (#859): Thank you to @samjdurante for the contribution.

2.0.4

Fixed

• Fix infinite loop bug in Test Mocks (#842): Thank you to @AlexPan1992 for raising the issue.
• Improve error description formatting for validation failure (#846): GraphQL validation errors encountered while running code generation are now formatted to be easier to read in logs. Thank you to @dfed for the contribution.
• Fix deadlock in AsyncReadWriteLock (#851): When under heavy loads, the AsyncReadWriteLock used by the ApolloStore could cause a deadlock. This is now resolved. Thank you to @marksvend for raising the issue.
• Fix cancellation error for single response operations (#855): When a single response operation was cancelled, a .noResults error was thrown instead of the expected CancellationError. This is now resolved. Thank you to @3redrubies for raising the issue.
• Fix multipart parsing error (#852): When a multipart message was received with characters after the closing boundary the multipart parser would emit a cannotParseChunkData parsing error. This is now resolved. Thank you to @ecant for raising the issue.