Refactor fasthttp iter calls to range loops

[ReneWerner87]

Summary

• replace fasthttp iterator callbacks with simple for loops
• keep early exit behaviour when errors occur

Testing

• make test

---

https://chatgpt.com/codex/tasks/task_e_6863c67370e88326b2ce7ad1f4a61afb

[coderabbitai]

Walkthrough

This update refactors multiple files to replace callback-style iteration over headers, cookies, and form/query parameters with idiomatic Go for-range loops. The logic and control flow remain unchanged, but the code now uses standard Go iteration patterns instead of callbacks, improving readability and consistency throughout the codebase.

Changes

File(s)	Change Summary
binder/cookie.go, binder/form.go, binder/header.go, binder/query.go,	Refactored callback-based iteration over cookies, form data, headers, and query parameters to for-range
binder/resp_header.go	loops, maintaining existing error handling and logic.
client/client_test.go, client/request_test.go,	Updated test functions to use for-range loops instead of callback iteration over headers.
middleware/cors/cors_test.go	Simplified header presence check in test to use for-range loop.
client/cookiejar.go, client/hooks.go, client/request.go	Replaced callback iteration over cookies, headers, parameters, and form data with for-range loops.
ctx.go	Refactored internal methods to use for-range loops for cookies, headers, and query arguments.
middleware/adaptor/adaptor.go, middleware/cache/cache.go	Changed response header iteration from callback to for-range loop for copying headers.
middleware/encryptcookie/encryptcookie.go	Updated middleware to use for-range loops for encrypting/decrypting cookies in headers.

Sequence Diagram(s)

sequenceDiagram
    participant Request
    participant Binder
    participant DataMap

    Request->>Binder: Call Bind(req, out)
    Binder->>DataMap: for key, value := range Collection
    DataMap->>Binder: formatBindData(key, value)
    alt Error occurs
        Binder-->>Request: return error
    else All ok
        Binder-->>Request: return nil
    end

Loading

Suggested labels

🧹 Updates, v3

Suggested reviewers

• sixcolors
• gaby

Poem

In fields of code where headers grow,
The rabbits hop, the ranges flow.
No more callbacks, loops instead—
A tidier warren for bugs to dread!
With every hop, the code runs right,
For Go’s own style is now in sight.
🐇✨

---

📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between eddecf2 and b00e692.

📒 Files selected for processing (15)

• binder/cookie.go (1 hunks)
• binder/form.go (1 hunks)
• binder/header.go (1 hunks)
• binder/query.go (1 hunks)
• binder/resp_header.go (1 hunks)
• client/client_test.go (2 hunks)
• client/cookiejar.go (2 hunks)
• client/hooks.go (4 hunks)
• client/request.go (3 hunks)
• client/request_test.go (1 hunks)
• ctx.go (6 hunks)
• middleware/adaptor/adaptor.go (1 hunks)
• middleware/cache/cache.go (1 hunks)
• middleware/cors/cors_test.go (1 hunks)
• middleware/encryptcookie/encryptcookie.go (3 hunks)

🧰 Additional context used

🧠 Learnings (12)

📓 Common learnings

Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/cache/cache_test.go:897-897
Timestamp: 2024-11-08T04:10:42.990Z
Learning: In the Fiber framework, `Context()` is being renamed to `RequestCtx()`, and `UserContext()` to `Context()` to improve clarity and align with Go's context conventions.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.

binder/resp_header.go (2)

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

middleware/adaptor/adaptor.go (3)

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

binder/cookie.go (2)

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

middleware/encryptcookie/encryptcookie.go (9)

Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:22-25
Timestamp: 2024-10-08T19:06:06.583Z
Learning: The `encryptcookie_test.go` file contains unit tests that validate key lengths for both `EncryptCookie` and `DecryptCookie` functions, ensuring that invalid key lengths raise appropriate errors.

Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:22-25
Timestamp: 2024-07-02T13:29:56.992Z
Learning: The `encryptcookie_test.go` file contains unit tests that validate key lengths for both `EncryptCookie` and `DecryptCookie` functions, ensuring that invalid key lengths raise appropriate errors.

Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:20-23
Timestamp: 2024-07-01T03:44:03.672Z
Learning: Unit tests for key length enforcement in both `EncryptCookie` and `DecryptCookie` functions have been added to ensure robust validation and prevent potential runtime errors.

Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:20-23
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests for key length enforcement in both `EncryptCookie` and `DecryptCookie` functions have been added to ensure robust validation and prevent potential runtime errors.

Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:51-54
Timestamp: 2024-07-01T03:33:22.283Z
Learning: Unit tests for key length enforcement in `DecryptCookie` have been added to ensure consistency and security in the encryption processes.

Learnt from: gaby
PR: gofiber/fiber#3056
File: middleware/encryptcookie/utils.go:51-54
Timestamp: 2024-10-08T19:06:06.583Z
Learning: Unit tests for key length enforcement in `DecryptCookie` have been added to ensure consistency and security in the encryption processes.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.

client/hooks.go (3)

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

middleware/cors/cors_test.go (3)

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.

client/client_test.go (7)

Learnt from: efectn
PR: gofiber/fiber#3162
File: app_test.go:893-895
Timestamp: 2024-11-29T12:37:27.581Z
Learning: In the `Test_App_ShutdownWithContext` function in `app_test.go`, the `clientDone` channel is used to synchronize the client's request completion before proceeding, eliminating the need for additional `time.Sleep` calls.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/config.go:122-122
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In `DefaultErrorHandler(c *fiber.Ctx, err error)`, since `c` is a pointer to an interface, we need to dereference `*c` when calling interface methods like `SendStatus`.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/session/config.go:122-122
Timestamp: 2024-09-25T16:18:34.719Z
Learning: In `DefaultErrorHandler(c *fiber.Ctx, err error)`, since `c` is a pointer to an interface, we need to dereference `*c` when calling interface methods like `SendStatus`.

middleware/cache/cache.go (2)

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

client/cookiejar.go (2)

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

ctx.go (5)

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/cache/cache_test.go:897-897
Timestamp: 2024-11-08T04:10:42.990Z
Learning: In the Fiber framework, `Context()` is being renamed to `RequestCtx()`, and `UserContext()` to `Context()` to improve clarity and align with Go's context conventions.

Learnt from: ReneWerner87
PR: gofiber/fiber#3161
File: app.go:923-932
Timestamp: 2024-11-15T07:56:21.623Z
Learning: In the Fiber framework, breaking changes are acceptable when moving from version 2 to version 3, including modifications to method signatures such as in the `Test` method in `app.go`.

client/request_test.go (4)

Learnt from: gaby
PR: gofiber/fiber#3193
File: middleware/adaptor/adaptor.go:111-111
Timestamp: 2024-11-10T23:44:13.704Z
Learning: In the `middleware/adaptor/adaptor.go` file of the Fiber framework, when updating context handling, replacing `c.Context()` with `c.RequestCtx()` is appropriate to access the `fasthttp.RequestCtx`.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-09-25T15:57:10.221Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: sixcolors
PR: gofiber/fiber#3016
File: middleware/csrf/csrf_test.go:188-193
Timestamp: 2024-10-08T19:06:06.583Z
Learning: In the Fiber framework tests, using `ctx.Response.Header.Cookie` may not be suitable for parsing cookies from the response header, as it requires a `*Cookie` and fills it rather than returning a string value; thus, manual parsing of the `Set-Cookie` header may be necessary.

Learnt from: efectn
PR: gofiber/fiber#3162
File: app_test.go:893-895
Timestamp: 2024-11-29T12:37:27.581Z
Learning: In the `Test_App_ShutdownWithContext` function in `app_test.go`, the `clientDone` channel is used to synchronize the client's request completion before proceeding, eliminating the need for additional `time.Sleep` calls.

🧬 Code Graph Analysis (5)

client/hooks.go (1)

client/request.go (1)

• Header (663-665)

middleware/cors/cors_test.go (3)

client/response.go (1)

• Response (19-25)

client/request.go (1)

• Header (663-665)

constants.go (1)

• HeaderAccessControlAllowOrigin (199-199)

client/client_test.go (1)

client/request.go (2)

• Request (45-70)
• Header (663-665)

middleware/cache/cache.go (2)

client/response.go (1)

• Response (19-25)

client/request.go (1)

• Header (663-665)

client/request_test.go (1)

client/request.go (2)

• Request (45-70)
• Header (663-665)

⏰ Context from checks skipped due to timeout of 90000ms (8)

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🔇 Additional comments (25)

binder/cookie.go (1)

23-30: LGTM! Clean refactoring from callback to idiomatic Go loop.

The refactoring correctly replaces the callback-style iteration with a standard for-range loop while preserving the early exit behavior through explicit break on error. This improves code readability and follows Go idioms.

binder/resp_header.go (1)

23-30: LGTM! Consistent refactoring pattern.

The change correctly replaces callback-style iteration with idiomatic for-range loop while maintaining the same error handling and early exit behavior. This aligns with the broader refactoring effort across the codebase.

middleware/adaptor/adaptor.go (1)

199-201: LGTM! Improved consistency with codebase refactoring.

The refactoring from callback-style iteration to for-range loop is correct and maintains the same functionality for copying fasthttp response headers to net/http response headers. This aligns with the broader effort to use idiomatic Go iteration patterns.

binder/form.go (1)

32-39: LGTM! Consistent binder refactoring.

The refactoring correctly replaces callback-style iteration over POST arguments with idiomatic for-range loop while preserving error handling and early exit behavior. This maintains consistency with other binder implementations.

binder/header.go (1)

22-29: LGTM! Completes the consistent binder refactoring pattern.

The refactoring correctly replaces callback-style header iteration with idiomatic for-range loop while maintaining error handling and early exit behavior. This completes the consistent refactoring across all binder implementations, improving code clarity and maintainability.

client/cookiejar.go (1)

201-214: LGTM! Clean refactor from callback to range loop.

The change from callback-style iteration to a standard Go for range loop improves readability while maintaining identical functionality. The cookie processing logic is preserved exactly, and removing the explicit return true statement simplifies the control flow.

client/client_test.go (1)

833-838: LGTM! Test refactor aligns with PR objectives.

The change from callback-style header iteration to a standard Go for range loop improves test readability while preserving identical test functionality. The header filtering logic for "K1" and "K2" headers is maintained exactly.

client/request_test.go (1)

1049-1056: LGTM! Consistent test refactor improves readability.

The change from callback-style header iteration to a standard Go for range loop is consistent with the refactoring pattern throughout this PR. The test functionality is preserved exactly, including the header filtering logic for "K1" and "K2" headers and proper error handling.

middleware/cors/cors_test.go (1)

527-531: LGTM! Clean refactoring to idiomatic Go iteration.

The change from callback-style iteration to a standard for range loop improves readability while preserving the original logic. The header existence check remains functionally identical.

middleware/encryptcookie/encryptcookie.go (2)

21-31: LGTM! Improved iteration pattern for request cookies.

The refactoring from callback-style iteration to a standard for range loop enhances readability while maintaining the exact same decryption logic and error handling for request cookies.

---

37-52: LGTM! Improved iteration pattern for response cookies.

The change to a standard for range loop improves code clarity while preserving the encryption logic and error handling (including the panic on encryption failure) for response cookies.

binder/query.go (1)

23-30: LGTM! Excellent refactoring with improved error handling clarity.

The change from callback-style iteration to a standard for range loop with explicit break on error is a significant improvement. This makes the early exit behavior on errors much more readable and follows idiomatic Go patterns.

client/request.go (3)

671-675: LGTM! Clean iteration refactoring for header collection.

The change from callback-style iteration to a standard for range loop improves readability while preserving the case-insensitive header matching and value collection logic.

---

704-706: LGTM! Simplified key collection with idiomatic Go.

The refactoring to a standard for range loop makes the key collection logic more readable while maintaining the same functionality, including the slices.Compact call for deduplication.

---

840-842: LGTM! Consistent iteration pattern for form data keys.

The change maintains consistency with the QueryParam.Keys method by using the same idiomatic for range loop pattern for key collection and compacting.

middleware/cache/cache.go (1)

257-263: LGTM! Clean refactoring of header copying logic.

The change from callback-style iteration to a standard for range loop improves readability while preserving the header filtering logic and copy creation for cache storage.

client/hooks.go (4)

92-97: LGTM! Clean refactor from callback to range iteration.

The change from callback-style iteration to standard Go range loops improves readability while preserving the exact same functionality for merging query parameters.

---

112-119: LGTM! Consistent header merging pattern.

The refactor maintains the same header merging logic but uses idiomatic Go range iteration instead of callbacks, making the code more readable and consistent with Go conventions.

---

231-236: LGTM! Proper error handling adjustment.

The change correctly transforms the callback pattern to a range loop with explicit break on error, maintaining the original early-exit behavior while improving code clarity.

---

288-296: LGTM! Correct error handling transformation.

The refactor properly converts from callback-based iteration to range loop with explicit break on parse errors, preserving the original error handling semantics while improving readability.

ctx.go (5)

411-413: LGTM! Simplified cookie deletion logic.

The change from callback iteration to range loop simplifies the cookie deletion logic while maintaining the same functionality. The range over keys is more idiomatic Go.

---

769-772: LGTM! Improved header map population.

The refactor replaces callback iteration with standard range loops for building the response headers map, making the code more readable and idiomatic.

---

781-784: LGTM! Consistent header processing pattern.

The change mirrors the GetRespHeaders pattern, using range iteration instead of callbacks for populating the request headers map, improving consistency across the codebase.

---

1252-1274: LGTM! Clean scheme detection refactor.

The transformation from callback to range loop with explicit continue statements maintains the original header filtering logic while making the code more readable and easier to follow.

---

1315-1317: LGTM! Simplified query parameter mapping.

The change from callback iteration to range loop for building the query parameters map is more idiomatic and readable, while preserving the exact same functionality.

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[gemini-code-assist]

Summary of Changes

Hello @ReneWerner87, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refactors several parts of the codebase by replacing fasthttp's callback-based iteration patterns with more idiomatic and readable Go for...range loops. The primary goal is to enhance code clarity and maintainability while ensuring that the original functional behavior, including early exit conditions on errors, remains unchanged.

Highlights

• Code Refactoring: Replaced fasthttp's callback-style iteration (e.g., req.Header.Cookies()(func(...) bool { ... })) with standard Go for...range loops for improved readability and idiomatic Go.
• Functional Equivalence: Ensured that the original early-exit behavior, where iterations would stop upon encountering an error, is preserved by using break statements within the new for...range constructs.
• Scope of Changes: Applied this refactoring consistently across various components, including binder (for cookies, forms, headers, queries, response headers), client (for headers, cookies, hooks, requests), ctx (for cookies, headers, queries, scheme), and middleware (adaptor, cache, CORS, encryptcookie).

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[Copilot]

Pull Request Overview

This PR refactors various iterations over fasthttp headers, cookies, query args, and form data by replacing callback-based iterators with simple Go for-range loops, while preserving early-exit behavior on errors.

• Replaced .All()(func) and .Cookies()(func) callback patterns with for key, value := range ... loops.
• Introduced break or continue statements to maintain the original early-exit semantics.
• Applied changes across middleware, client, and binder packages, including tests.

Reviewed Changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
middleware/encryptcookie/encryptcookie.go	Iteration switched to for-range for request/response cookies
middleware/cors/cors_test.go	Updated test header iteration to for-range
middleware/cache/cache.go	Refactored header iteration to for-range
middleware/adaptor/adaptor.go	Converted header iteration to for-range
ctx.go	Updated various header/query/cookie iterations to for-range
client/request_test.go	Converted request header iteration in tests to for-range
client/request.go	Refactored Header.PeekMultiple and parameter iteration to for-range
client/hooks.go	Switched param/header/form data iterations to for-range
client/cookiejar.go	Updated cookie parsing loop to for-range
client/client_test.go	Converted request header iteration in tests to for-range
binder/resp_header.go	Replaced header binding iteration with for-range
binder/query.go	Refactored query binding iteration to for-range
binder/header.go	Updated header binding iteration to for-range
binder/form.go	Converted form binding iteration to for-range
binder/cookie.go	Refactored cookie binding iteration to for-range

Comments suppressed due to low confidence (1)

middleware/cache/cache.go:259

• [nitpick] Use a consistent variable name when converting keys to strings (e.g., keyString) to match patterns in other files.

				keyS := string(key)

[codecov]

Codecov Report

Attention: Patch coverage is 81.63265% with 9 lines in your changes missing coverage. Please review.

Project coverage is 90.97%. Comparing base (eddecf2) to head (b00e692).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
client/hooks.go	76.92%	2 Missing and 1 partial ⚠️
binder/cookie.go	33.33%	1 Missing and 1 partial ⚠️
binder/header.go	33.33%	1 Missing and 1 partial ⚠️
binder/resp_header.go	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3559      +/-   ##
==========================================
- Coverage   91.05%   90.97%   -0.08%     
==========================================
  Files         110      110              
  Lines       11084    11064      -20     
==========================================
- Hits        10092    10065      -27     
- Misses        742      745       +3     
- Partials      250      254       +4     

Flag	Coverage Δ
unittests	90.97% <81.63%> (-0.08%)	⬇️

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[gemini-code-assist]

Code Review

This pull request refactors fasthttp iterator callbacks to use Go's native for...range loops. The changes correctly preserve the original logic, including early exits on errors.

[ksw2000]

LGTM