Enum HttpError 

pub enum HttpError {
    ConnectTimeout,
    RequestTimeout,
    ConnectionFailed(String),
    ServerError(u16),
    ClientError(u16, String),
    Cancelled,
    TooManyRedirects,
    InvalidUrl(String),
    InvalidHeaderName(String),
    InvalidHeaderValue(String),
    JsonSerialize(String),
    JsonDeserialize(String),
    FormEncode(String),
    BodyTooLarge,
    ResponseBody(String),
    Request(Error),
    ClientBuild(String),
    Other(String),
}

HTTP 客户端错误

Variants

ConnectTimeout

连接超时

RequestTimeout

请求超时

ConnectionFailed(String)

连接失败

ServerError(u16)

服务器错误 (5xx)

ClientError(u16, String)

客户端错误 (4xx)

Cancelled

请求被取消

TooManyRedirects

重定向过多

InvalidUrl(String)

无效的 URL

InvalidHeaderName(String)

无效的请求头名称

InvalidHeaderValue(String)

无效的请求头值

JsonSerialize(String)

JSON 序列化错误

JsonDeserialize(String)

JSON 反序列化错误

FormEncode(String)

表单编码错误

BodyTooLarge

请求体过大

ResponseBody(String)

响应体读取错误

Request(Error)

底层请求错误

ClientBuild(String)

构建客户端失败

Other(String)

其他错误

Implementations

impl HttpError

pub fn is_retryable(&self) -> bool

判断错误是否可重试

可重试的错误类型：

• 连接超时/请求超时
• 连接失败（网络抖动）
• 服务器错误 (5xx)

pub fn is_client_error(&self) -> bool

判断是否为客户端错误（通常不应重试）

pub fn is_server_error(&self) -> bool

判断是否为服务器错误

pub fn status_code(&self) -> Option<u16>

获取 HTTP 状态码（如果有）

Trait Implementations

impl Debug for HttpError

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

Formats the value using the given formatter.

impl Display for HttpError

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

Formats the value using the given formatter.

impl Error for HttpError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for HttpError

fn from(err: Error) -> Self

Converts to this type from the input type.