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Added FrozenClientRequest for easier retrying HTTP calls (#1064)

Browse Source 
* Initial commit

* Added extra_headers

* Added freeze() method to ClientRequest which produces a 'read-only' copy of a request suitable for retrying the send operation

* Additional methods for FrozenClientRequest

* Fix

* Increased crates versions

* Fixed a unit test. Added one more unit test.

* Added RequestHeaderWrapper

* Small fixes

* Renamed RequestHeadWrapper->RequestHeadType

* Updated CHANGES.md files

* Small fix

* Small changes

* Removed *_extra methods from Connection trait

* Added FrozenSendBuilder

* Added FrozenSendBuilder

* Minor fix

* Replaced impl Future with concrete Future implementation

* Small renaming

* Renamed Send->SendBody
This commit is contained in:
Dmitry Pypin
2019-09-09 21:29:32 -07:00
committed by Nikolay Kim
parent 5e8f1c338c
commit 8873e9b39e
14 changed files with 828 additions and 184 deletions
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90
actix-http/src/h1/encoder.rs
View File

@@ -4,6 +4,7 @@ use std::io::Write;
use std::marker::PhantomData;
use std::str::FromStr;
use std::{cmp, fmt, io, mem};
use std::rc::Rc;
use bytes::{BufMut, Bytes, BytesMut};
@@ -15,7 +16,7 @@ use crate::http::header::{
HeaderValue, ACCEPT_ENCODING, CONNECTION, CONTENT_LENGTH, DATE, TRANSFER_ENCODING,
};
use crate::http::{HeaderMap, Method, StatusCode, Version};
use crate::message::{ConnectionType, Head, RequestHead, ResponseHead};
use crate::message::{ConnectionType, Head, RequestHead, ResponseHead, RequestHeadType};
use crate::request::Request;
use crate::response::Response;
@@ -43,6 +44,8 @@ pub(crate) trait MessageType: Sized {
fn headers(&self) -> &HeaderMap;
fn extra_headers(&self) -> Option<&HeaderMap>;
fn camel_case(&self) -> bool {
false
}
@@ -128,12 +131,21 @@ pub(crate) trait MessageType: Sized {
_ => (),
}
// merging headers from head and extra headers. HeaderMap::new() does not allocate.
let empty_headers = HeaderMap::new();
let extra_headers = self.extra_headers().unwrap_or(&empty_headers);
let headers = self.headers().inner.iter()
.filter(|(name, _)| {
!extra_headers.contains_key(*name)
})
.chain(extra_headers.inner.iter());
// write headers
let mut pos = 0;
let mut has_date = false;
let mut remaining = dst.remaining_mut();
let mut buf = unsafe { &mut *(dst.bytes_mut() as *mut [u8]) };
for (key, value) in self.headers().inner.iter() {
for (key, value) in headers {
match *key {
CONNECTION => continue,
TRANSFER_ENCODING | CONTENT_LENGTH if skip_len => continue,
@@ -235,6 +247,10 @@ impl MessageType for Response<()> {
&self.head().headers
}
fn extra_headers(&self) -> Option<&HeaderMap> {
None
}
fn encode_status(&mut self, dst: &mut BytesMut) -> io::Result<()> {
let head = self.head();
let reason = head.reason().as_bytes();
@@ -247,31 +263,36 @@ impl MessageType for Response<()> {
}
}
impl MessageType for RequestHead {
impl MessageType for RequestHeadType {
fn status(&self) -> Option<StatusCode> {
None
}
fn chunked(&self) -> bool {
self.chunked()
self.as_ref().chunked()
}
fn camel_case(&self) -> bool {
RequestHead::camel_case_headers(self)
self.as_ref().camel_case_headers()
}
fn headers(&self) -> &HeaderMap {
&self.headers
self.as_ref().headers()
}
fn extra_headers(&self) -> Option<&HeaderMap> {
self.extra_headers()
}
fn encode_status(&mut self, dst: &mut BytesMut) -> io::Result<()> {
dst.reserve(256 + self.headers.len() * AVERAGE_HEADER_SIZE);
let head = self.as_ref();
dst.reserve(256 + head.headers.len() * AVERAGE_HEADER_SIZE);
write!(
Writer(dst),
"{} {} {}",
self.method,
self.uri.path_and_query().map(|u| u.as_str()).unwrap_or("/"),
match self.version {
head.method,
head.uri.path_and_query().map(|u| u.as_str()).unwrap_or("/"),
match head.version {
Version::HTTP_09 => "HTTP/0.9",
Version::HTTP_10 => "HTTP/1.0",
Version::HTTP_11 => "HTTP/1.1",
@@ -488,9 +509,11 @@ fn write_camel_case(value: &[u8], buffer: &mut [u8]) {
#[cfg(test)]
mod tests {
use bytes::Bytes;
//use std::rc::Rc;
use super::*;
use crate::http::header::{HeaderValue, CONTENT_TYPE};
use http::header::AUTHORIZATION;
#[test]
fn test_chunked_te() {
@@ -515,6 +538,8 @@ mod tests {
head.headers
.insert(CONTENT_TYPE, HeaderValue::from_static("plain/text"));
let mut head = RequestHeadType::Owned(head);
let _ = head.encode_headers(
&mut bytes,
Version::HTTP_11,
@@ -551,21 +576,16 @@ mod tests {
Bytes::from_static(b"\r\nContent-Length: 100\r\nDate: date\r\nContent-Type: plain/text\r\n\r\n")
);
let mut head = RequestHead::default();
head.set_camel_case_headers(false);
head.headers.insert(DATE, HeaderValue::from_static("date"));
head.headers
.insert(CONTENT_TYPE, HeaderValue::from_static("plain/text"));
head.headers
.append(CONTENT_TYPE, HeaderValue::from_static("xml"));
let _ = head.encode_headers(
&mut bytes,
Version::HTTP_11,
BodySize::Stream,
ConnectionType::KeepAlive,
&ServiceConfig::default(),
);
assert_eq!(
bytes.take().freeze(),
Bytes::from_static(b"\r\nTransfer-Encoding: chunked\r\nDate: date\r\nContent-Type: xml\r\nContent-Type: plain/text\r\n\r\n")
);
head.set_camel_case_headers(false);
let mut head = RequestHeadType::Owned(head);
let _ = head.encode_headers(
&mut bytes,
Version::HTTP_11,
@@ -578,4 +598,30 @@ mod tests {
Bytes::from_static(b"\r\ntransfer-encoding: chunked\r\ndate: date\r\ncontent-type: xml\r\ncontent-type: plain/text\r\n\r\n")
);
}
#[test]
fn test_extra_headers() {
let mut bytes = BytesMut::with_capacity(2048);
let mut head = RequestHead::default();
head.headers.insert(AUTHORIZATION, HeaderValue::from_static("some authorization"));
let mut extra_headers = HeaderMap::new();
extra_headers.insert(AUTHORIZATION,HeaderValue::from_static("another authorization"));
extra_headers.insert(DATE, HeaderValue::from_static("date"));
let mut head = RequestHeadType::Rc(Rc::new(head), Some(extra_headers));
let _ = head.encode_headers(
&mut bytes,
Version::HTTP_11,
BodySize::Empty,
ConnectionType::Close,
&ServiceConfig::default(),
);
assert_eq!(
bytes.take().freeze(),
Bytes::from_static(b"\r\ncontent-length: 0\r\nconnection: close\r\nauthorization: another authorization\r\ndate: date\r\n\r\n")
);
}
}