pub struct Headers { /* fields omitted */ }
A map of header fields on requests and responses.
Creates a new, empty headers map.
Set a header field to the corresponding value.
The field is determined by the type of the value being set.
Access the raw value of a header.
Prefer to use the typed getters instead.
Example:
let raw_content_type = headers.get_raw("content-type");
Set the raw value of a header, bypassing any typed headers.
Note: This will completely replace any current value for this
header name.
Example:
headers.set_raw("content-length", vec![b"5".to_vec()]);
Append a value to raw value of this header.
If a header already contains a value, this will add another line to it.
If a header doesnot exist for this name, a new one will be created with
the value.
Example:
headers.append_raw("x-foo", b"bar".to_vec());
headers.append_raw("x-foo", b"quux".to_vec());
Remove a header set by set_raw
Get a reference to the header field's value, if it exists.
Get a mutable reference to the header field's value, if it exists.
Returns a boolean of whether a certain header is in the map.
Example:
let has_type = headers.has::<ContentType>();
Removes a header from the map, if one existed.
Returns true if a header has been removed.
Returns an iterator over the header fields.
Returns the number of headers in the map.
Remove all headers from the map.
Performs copy-assignment from source
. Read more
Formats the value using the given formatter. Read more
Extends a collection with the contents of an iterator. Read more
Formats the value using the given formatter. Read more
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
type Owned = T
Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
Converts the given value to a String
. Read more
type Error = !
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
type Error = <U as TryFrom<T>>::Error
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
impl<T> Typeable for T where T: Any, | |
Get the TypeId
of this object.