1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
use crate::conn::{Error, Headers, Payload, Result};
use futures_util::{
stream::{self, Stream},
StreamExt,
};
use hyper::{
body::Bytes,
client::{Client, HttpConnector},
header, Body, Method, Request, Response,
};
#[cfg(feature = "tls")]
use hyper_openssl::HttpsConnector;
#[cfg(unix)]
use hyperlocal::UnixConnector;
#[cfg(unix)]
use hyperlocal::Uri as DomainUri;
use url::Url;
use std::{iter::IntoIterator, path::PathBuf};
#[derive(Clone, Debug)]
pub enum Transport {
Tcp {
client: Client<HttpConnector>,
host: Url,
},
#[cfg(feature = "tls")]
#[cfg_attr(docsrs, doc(cfg(feature = "tls")))]
EncryptedTcp {
client: Client<HttpsConnector<HttpConnector>>,
host: Url,
},
#[cfg(unix)]
Unix {
client: Client<UnixConnector>,
path: PathBuf,
},
}
impl Transport {
pub fn remote_addr(&self) -> &str {
match &self {
Self::Tcp { ref host, .. } => host.as_ref(),
#[cfg(feature = "tls")]
Self::EncryptedTcp { ref host, .. } => host.as_ref(),
#[cfg(unix)]
Self::Unix { ref path, .. } => path.to_str().unwrap_or_default(),
}
}
pub fn make_uri(&self, ep: &str) -> Result<hyper::Uri> {
match self {
Transport::Tcp { host, .. } => format!("{host}{ep}").parse().map_err(Error::InvalidUri),
#[cfg(feature = "tls")]
Transport::EncryptedTcp { host, .. } => {
format!("{host}{ep}").parse().map_err(Error::InvalidUri)
}
#[cfg(unix)]
Transport::Unix { path, .. } => Ok(DomainUri::new(path, ep).into()),
}
}
pub async fn request(&self, req: Request<Body>) -> Result<Response<Body>> {
log::trace!("sending request {} {}", req.method(), req.uri());
match self {
Transport::Tcp { ref client, .. } => client.request(req),
#[cfg(feature = "tls")]
Transport::EncryptedTcp { ref client, .. } => client.request(req),
#[cfg(unix)]
Transport::Unix { ref client, .. } => client.request(req),
}
.await
.map_err(Error::from)
}
pub async fn request_string(&self, req: Request<Body>) -> Result<String> {
let body = self.request(req).await.map(|resp| resp.into_body())?;
body_to_string(body).await
}
}
pub(crate) async fn body_to_string(body: Body) -> Result<String> {
let bytes = hyper::body::to_bytes(body).await?;
String::from_utf8(bytes.to_vec()).map_err(Error::from)
}
pub(crate) fn build_request<B>(
method: Method,
uri: hyper::Uri,
body: Payload<B>,
headers: Option<Headers>,
) -> Result<Request<Body>>
where
B: Into<Body>,
{
let builder = hyper::http::request::Builder::new();
let req = builder.method(method).uri(&uri);
let mut req = req.header(header::HOST, "");
if let Some(h) = headers {
for (k, v) in h.into_iter() {
req = req.header(k, v);
}
}
if body.is_none() {
return Ok(req.body(Body::empty())?);
}
let mime = body.mime_type();
if let Some(c) = mime {
req = req.header(header::CONTENT_TYPE, &c.to_string());
}
req.body(body.into_inner().unwrap().into())
.map_err(Error::from)
}
pub(crate) async fn get_response_string(response: Response<Body>) -> Result<String> {
body_to_string(response.into_body()).await
}
pub(crate) fn stream_response(response: Response<Body>) -> impl Stream<Item = Result<Bytes>> {
stream_body(response.into_body())
}
pub(crate) fn stream_json_response(response: Response<Body>) -> impl Stream<Item = Result<Bytes>> {
stream_json_body(response.into_body())
}
fn stream_body(body: Body) -> impl Stream<Item = Result<Bytes>> {
async fn unfold(mut body: Body) -> Option<(Result<Bytes>, Body)> {
body.next()
.await
.map(|chunk| (chunk.map_err(Error::from), body))
}
stream::unfold(body, unfold)
}
static JSON_WHITESPACE: &[u8] = b"\r\n";
fn stream_json_body(body: Body) -> impl Stream<Item = Result<Bytes>> {
async fn unfold(mut body: Body) -> Option<(Result<Bytes>, Body)> {
let mut chunk = Vec::new();
while let Some(chnk) = body.next().await {
match chnk {
Ok(chnk) => {
chunk.extend(chnk.to_vec());
if chnk.ends_with(JSON_WHITESPACE) {
break;
}
}
Err(e) => {
return Some((Err(Error::from(e)), body));
}
}
}
if chunk.is_empty() {
return None;
}
Some((Ok(Bytes::from(chunk)), body))
}
stream::unfold(body, unfold)
}