pub struct Builder { /* private fields */ }
Expand description
Implementations§
Source§impl Builder
impl Builder
Sourcepub fn pool_idle_timeout<D>(&mut self, val: D) -> &mut Self
pub fn pool_idle_timeout<D>(&mut self, val: D) -> &mut Self
Set an optional timeout for idle sockets being kept-alive.
A Timer
is required for this to take effect. See Builder::pool_timer
Pass None
to disable timeout.
Default is 90 seconds.
§Example
use std::time::Duration;
use hyper_util::client::legacy::Client;
use hyper_util::rt::{TokioExecutor, TokioTimer};
let client = Client::builder(TokioExecutor::new())
.pool_idle_timeout(Duration::from_secs(30))
.pool_timer(TokioTimer::new())
.build_http();
Sourcepub fn pool_max_idle_per_host(&mut self, max_idle: usize) -> &mut Self
pub fn pool_max_idle_per_host(&mut self, max_idle: usize) -> &mut Self
Sets the maximum idle connection per host allowed in the pool.
Default is usize::MAX
(no limit).
Sourcepub fn http1_read_buf_exact_size(&mut self, sz: usize) -> &mut Self
pub fn http1_read_buf_exact_size(&mut self, sz: usize) -> &mut Self
Sets the exact size of the read buffer to always use.
Note that setting this option unsets the http1_max_buf_size
option.
Default is an adaptive read buffer.
Sourcepub fn http1_max_buf_size(&mut self, max: usize) -> &mut Self
pub fn http1_max_buf_size(&mut self, max: usize) -> &mut Self
Set the maximum buffer size for the connection.
Default is ~400kb.
Note that setting this option unsets the http1_read_exact_buf_size
option.
§Panics
The minimum value allowed is 8192. This method panics if the passed max
is less than the minimum.
Sourcepub fn http1_allow_spaces_after_header_name_in_responses(
&mut self,
val: bool,
) -> &mut Self
pub fn http1_allow_spaces_after_header_name_in_responses( &mut self, val: bool, ) -> &mut Self
Set whether HTTP/1 connections will accept spaces between header names and the colon that follow them in responses.
Newline codepoints (\r
and \n
) will be transformed to spaces when
parsing.
You probably don’t need this, here is what RFC 7230 Section 3.2.4. has to say about it:
No whitespace is allowed between the header field-name and colon. In the past, differences in the handling of such whitespace have led to security vulnerabilities in request routing and response handling. A server MUST reject any received request message that contains whitespace between a header field-name and colon with a response code of 400 (Bad Request). A proxy MUST remove any such whitespace from a response message before forwarding the message downstream.
Note that this setting does not affect HTTP/2.
Default is false.
Sourcepub fn http1_allow_obsolete_multiline_headers_in_responses(
&mut self,
val: bool,
) -> &mut Self
pub fn http1_allow_obsolete_multiline_headers_in_responses( &mut self, val: bool, ) -> &mut Self
Set whether HTTP/1 connections will accept obsolete line folding for header values.
You probably don’t need this, here is what RFC 7230 Section 3.2.4. has to say about it:
A server that receives an obs-fold in a request message that is not within a message/http container MUST either reject the message by sending a 400 (Bad Request), preferably with a representation explaining that obsolete line folding is unacceptable, or replace each received obs-fold with one or more SP octets prior to interpreting the field value or forwarding the message downstream.
A proxy or gateway that receives an obs-fold in a response message that is not within a message/http container MUST either discard the message and replace it with a 502 (Bad Gateway) response, preferably with a representation explaining that unacceptable line folding was received, or replace each received obs-fold with one or more SP octets prior to interpreting the field value or forwarding the message downstream.
A user agent that receives an obs-fold in a response message that is not within a message/http container MUST replace each received obs-fold with one or more SP octets prior to interpreting the field value.
Note that this setting does not affect HTTP/2.
Default is false.
Sourcepub fn http1_ignore_invalid_headers_in_responses(
&mut self,
val: bool,
) -> &mut Builder
pub fn http1_ignore_invalid_headers_in_responses( &mut self, val: bool, ) -> &mut Builder
Sets whether invalid header lines should be silently ignored in HTTP/1 responses.
This mimics the behaviour of major browsers. You probably don’t want this. You should only want this if you are implementing a proxy whose main purpose is to sit in front of browsers whose users access arbitrary content which may be malformed, and they expect everything that works without the proxy to keep working with the proxy.
This option will prevent Hyper’s client from returning an error encountered when parsing a header, except if the error was caused by the character NUL (ASCII code 0), as Chrome specifically always reject those.
The ignorable errors are:
- empty header names;
- characters that are not allowed in header names, except for
\0
and\r
; - when
allow_spaces_after_header_name_in_responses
is not enabled, spaces and tabs between the header name and the colon; - missing colon between header name and colon;
- characters that are not allowed in header values except for
\0
and\r
.
If an ignorable error is encountered, the parser tries to find the next
line in the input to resume parsing the rest of the headers. An error
will be emitted nonetheless if it finds \0
or a lone \r
while
looking for the next line.
Sourcepub fn http1_writev(&mut self, enabled: bool) -> &mut Builder
pub fn http1_writev(&mut self, enabled: bool) -> &mut Builder
Set whether HTTP/1 connections should try to use vectored writes, or always flatten into a single buffer.
Note that setting this to false may mean more copies of body data, but may also improve performance when an IO transport doesn’t support vectored writes well, such as most TLS implementations.
Setting this to true will force hyper to use queued strategy which may eliminate unnecessary cloning on some TLS backends
Default is auto
. In this mode hyper will try to guess which
mode to use
Sourcepub fn http1_title_case_headers(&mut self, val: bool) -> &mut Self
pub fn http1_title_case_headers(&mut self, val: bool) -> &mut Self
Set whether HTTP/1 connections will write header names as title case at the socket level.
Note that this setting does not affect HTTP/2.
Default is false.
Sourcepub fn http1_preserve_header_case(&mut self, val: bool) -> &mut Self
pub fn http1_preserve_header_case(&mut self, val: bool) -> &mut Self
Set whether to support preserving original header cases.
Currently, this will record the original cases received, and store them
in a private extension on the Response
. It will also look for and use
such an extension in any provided Request
.
Since the relevant extension is still private, there is no way to interact with the original cases. The only effect this can have now is to forward the cases in a proxy-like fashion.
Note that this setting does not affect HTTP/2.
Default is false.
Sourcepub fn http1_max_headers(&mut self, val: usize) -> &mut Self
pub fn http1_max_headers(&mut self, val: usize) -> &mut Self
Set the maximum number of headers.
When a response is received, the parser will reserve a buffer to store headers for optimal performance.
If client receives more headers than the buffer size, the error “message header too large” is returned.
The headers is allocated on the stack by default, which has higher performance. After setting this value, headers will be allocated in heap memory, that is, heap memory allocation will occur for each response, and there will be a performance drop of about 5%.
Note that this setting does not affect HTTP/2.
Default is 100.
Sourcepub fn http09_responses(&mut self, val: bool) -> &mut Self
pub fn http09_responses(&mut self, val: bool) -> &mut Self
Set whether HTTP/0.9 responses should be tolerated.
Default is false.
Sourcepub fn timer<M>(&mut self, timer: M) -> &mut Self
pub fn timer<M>(&mut self, timer: M) -> &mut Self
Provide a timer to be used for h2
See the documentation of h2::client::Builder::timer
for more
details.
Sourcepub fn pool_timer<M>(&mut self, timer: M) -> &mut Self
pub fn pool_timer<M>(&mut self, timer: M) -> &mut Self
Provide a timer to be used for timeouts and intervals in connection pools.
Sourcepub fn retry_canceled_requests(&mut self, val: bool) -> &mut Self
pub fn retry_canceled_requests(&mut self, val: bool) -> &mut Self
Set whether to retry requests that get disrupted before ever starting to write.
This means a request that is queued, and gets given an idle, reused connection, and then encounters an error immediately as the idle connection was found to be unusable.
When this is set to false
, the related ResponseFuture
would instead
resolve to an Error::Cancel
.
Default is true
.
Sourcepub fn set_host(&mut self, val: bool) -> &mut Self
pub fn set_host(&mut self, val: bool) -> &mut Self
Set whether to automatically add the Host
header to requests.
If true, and a request does not include a Host
header, one will be
added automatically, derived from the authority of the Uri
.
Default is true
.
Sourcepub fn build_http<B>(&self) -> Client<HttpConnector, B>
pub fn build_http<B>(&self) -> Client<HttpConnector, B>
Build a client with this configuration and the default HttpConnector
.