Struct ExpectHandler 

pub struct ExpectHandler {
    pub max_content_length: usize,
    pub required_content_type: Option<String>,
}

Handler for HTTP Expect header processing.

Fields

max_content_length: usize

Maximum Content-Length to accept (0 = unlimited)

required_content_type: Option<String>

Required Content-Type prefix (empty = any)

Implementations

impl ExpectHandler

pub fn new() -> Self

Create a new ExpectHandler with default settings.

pub fn with_max_content_length(self, max: usize) -> Self

Set the maximum Content-Length to accept.

pub fn with_required_content_type(self, content_type: impl Into<String>) -> Self

Set the required Content-Type prefix.

pub fn check_expect(request: &Request) -> ExpectResult

Check if a request has an Expect header and what it contains.

Returns:

• ExpectResult::NoExpectation - No Expect header, proceed normally
• ExpectResult::ExpectsContinue - Expect: 100-continue present
• ExpectResult::UnknownExpectation - Unknown expectation value

pub fn expects_continue(request: &Request) -> bool

Check if the request expects 100-continue.

This is a convenience method that returns true only for valid Expect: 100-continue headers.

pub fn validate_content_length(&self, request: &Request) -> Result<(), Response>

Validate Content-Length against maximum limit.

Returns Ok(()) if Content-Length is within limits or not specified, or Err(Response) with 413 Payload Too Large if exceeded.

pub fn validate_content_type(&self, request: &Request) -> Result<(), Response>

Validate Content-Type against required type.

Returns Ok(()) if Content-Type matches or no requirement is set, or Err(Response) with 415 Unsupported Media Type if mismatched.

pub fn validate_all(&self, request: &Request) -> Result<(), Response>

Run all configured validations.

Returns Ok(()) if all validations pass, or the first error response.

pub fn expectation_failed(detail: impl Into<String>) -> Response

Create a 417 Expectation Failed response.

pub fn unauthorized(detail: impl Into<String>) -> Response

Create a 401 Unauthorized response.

pub fn forbidden(detail: impl Into<String>) -> Response

Create a 403 Forbidden response.

pub fn payload_too_large(detail: impl Into<String>) -> Response

Create a 413 Payload Too Large response.

pub fn unsupported_media_type(detail: impl Into<String>) -> Response

Create a 415 Unsupported Media Type response.

Trait Implementations

impl Clone for ExpectHandler

fn clone(&self) -> ExpectHandler

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ExpectHandler

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ExpectHandler

fn default() -> ExpectHandler

Returns the “default value” for a type.