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Ensure that Content-Length zero is specified in empty request

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Douman 2019-03-02 12:55:31 +03:00
parent 6d11ee683f
commit 42f030d3f4
2 changed files with 90 additions and 3 deletions
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2
CHANGES.md
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@ -12,6 +12,8 @@
* Ignored the `If-Modified-Since` if `If-None-Match` is specified. #680
* Do not remove `Content-Length` on `Body::Empty` and insert zero value if it is missing for `POST` and `PUT` methods.
## [0.7.18] - 2019-01-10
### Added

91
src/client/writer.rs
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@ -16,9 +16,9 @@ use flate2::write::{GzEncoder, ZlibEncoder};
use flate2::Compression;
use futures::{Async, Poll};
use http::header::{
HeaderValue, CONNECTION, CONTENT_ENCODING, CONTENT_LENGTH, DATE, TRANSFER_ENCODING,
self, HeaderValue, CONNECTION, CONTENT_ENCODING, CONTENT_LENGTH, DATE, TRANSFER_ENCODING,
};
use http::{HttpTryFrom, Version};
use http::{Method, HttpTryFrom, Version};
use time::{self, Duration};
use tokio_io::AsyncWrite;
@ -223,7 +223,19 @@ fn content_encoder(buf: BytesMut, req: &mut ClientRequest) -> Output {
let transfer = match body {
Body::Empty => {
req.headers_mut().remove(CONTENT_LENGTH);
match req.method() {
//Insert zero content-length only if user hasn't added it.
//We don't really need it for other methods as they are not supposed to carry payload
&Method::POST | &Method::PUT | &Method::PATCH => {
req.headers_mut()
.entry(CONTENT_LENGTH)
.expect("CONTENT_LENGTH to be valid header name")
.or_insert(header::HeaderValue::from_static("0"));
},
_ => {
req.headers_mut().remove(CONTENT_LENGTH);
}
}
return Output::Empty(buf);
}
Body::Binary(ref mut bytes) => {
@ -410,3 +422,76 @@ impl CachedDate {
self.next_update.nsec = 0;
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_content_encoder_empty_body() {
let mut req = ClientRequest::post("http://google.com").finish().expect("Create request");
let result = content_encoder(BytesMut::new(), &mut req);
match result {
Output::Empty(buf) => {
assert_eq!(buf.len(), 0);
let content_len = req.headers().get(CONTENT_LENGTH).expect("To set Content-Length for empty POST");
assert_eq!(content_len, "0");
},
_ => panic!("Unexpected result, should be Output::Empty"),
}
req.set_method(Method::GET);
let result = content_encoder(BytesMut::new(), &mut req);
match result {
Output::Empty(buf) => {
assert_eq!(buf.len(), 0);
assert!(!req.headers().contains_key(CONTENT_LENGTH));
},
_ => panic!("Unexpected result, should be Output::Empty"),
}
req.set_method(Method::PUT);
let result = content_encoder(BytesMut::new(), &mut req);
match result {
Output::Empty(buf) => {
assert_eq!(buf.len(), 0);
let content_len = req.headers().get(CONTENT_LENGTH).expect("To set Content-Length for empty PUT");
assert_eq!(content_len, "0");
},
_ => panic!("Unexpected result, should be Output::Empty"),
}
req.set_method(Method::DELETE);
let result = content_encoder(BytesMut::new(), &mut req);
match result {
Output::Empty(buf) => {
assert_eq!(buf.len(), 0);
assert!(!req.headers().contains_key(CONTENT_LENGTH));
},
_ => panic!("Unexpected result, should be Output::Empty"),
}
req.set_method(Method::PATCH);
let result = content_encoder(BytesMut::new(), &mut req);
match result {
Output::Empty(buf) => {
assert_eq!(buf.len(), 0);
let content_len = req.headers().get(CONTENT_LENGTH).expect("To set Content-Length for empty PATCH");
assert_eq!(content_len, "0");
},
_ => panic!("Unexpected result, should be Output::Empty"),
}
}
}