sark_core/http/response/
fixed.rs

1use http::StatusCode;
2use o3::buffer::{Owned, Shared};
3
4use super::wire_emit::{ContentLength, DATE_LEN, HeadWrite, Out, PLACEHOLDER_DATE};
5use super::{HeadInner, HeadersInner, InlineHeaderValue};
6
7#[derive(Clone, Debug)]
8pub struct FixedResponseInner<'req> {
9    pub(super) status: StatusCode,
10    pub(super) head: HeadInner<'req>,
11    pub(super) body: Shared,
12    pub(super) body_len_ascii: InlineHeaderValue,
13}
14
15pub type FixedResponse = FixedResponseInner<'static>;
16
17impl<'req> FixedResponseInner<'req> {
18    pub fn direct<B>(
19        status: StatusCode,
20        static_headers: &'static [u8],
21        headers: HeadersInner<'req>,
22        body: B,
23    ) -> Self
24    where
25        B: Into<Shared>,
26    {
27        let body = body.into();
28        Self {
29            status,
30            head: HeadInner::new(static_headers, headers),
31            body_len_ascii: InlineHeaderValue::from_decimal(body.len()),
32            body,
33        }
34    }
35
36    pub fn status(&self) -> StatusCode {
37        self.status
38    }
39
40    pub fn body_ref(&self) -> &[u8] {
41        self.body.as_ref()
42    }
43
44    pub fn has_content_encoding(&self) -> bool {
45        self.head.headers().has_content_encoding()
46    }
47
48    pub fn wire_headers(&self) -> Shared {
49        let mut out = Owned::with_capacity(self.head.wire_len());
50        self.head.write_into(&mut out);
51        out.freeze()
52    }
53
54    pub fn write_preserialized(
55        out: &mut [u8],
56        template: &[u8],
57        date_offset: Option<usize>,
58        date: &[u8; 29],
59    ) -> Option<usize> {
60        let total = template.len();
61        if out.len() < total {
62            return None;
63        }
64        out[..total].copy_from_slice(template);
65        if let Some(off) = date_offset {
66            out[off..off + DATE_LEN].copy_from_slice(date);
67        }
68        Some(total)
69    }
70
71    fn head_write(&self) -> (HeadWrite<'_, HeadInner<'req>, ContentLength<'_>>, &[u8]) {
72        let head = HeadWrite {
73            status_str: self.status.as_str().as_bytes(),
74            reason: self
75                .status
76                .canonical_reason()
77                .map(str::as_bytes)
78                .unwrap_or(b""),
79            headers: &self.head,
80            framing: ContentLength(self.body_len_ascii.as_bytes()),
81        };
82        (head, self.body.as_ref())
83    }
84
85    pub fn preserialize(&self) -> (Vec<u8>, usize) {
86        let (head, body) = self.head_write();
87        let mut buf = vec![0u8; head.wire_len() + body.len()];
88        let mut off = 0usize;
89        let date_offset = head.write(&mut buf, &mut off, PLACEHOLDER_DATE);
90        Out::put(&mut buf, &mut off, body);
91        (buf, date_offset)
92    }
93
94    pub fn write_into_slice(&self, out: &mut [u8], date: &[u8; 29]) -> Option<usize> {
95        let (head, body) = self.head_write();
96        if out.len() < head.wire_len() + body.len() {
97            return None;
98        }
99        let mut off = 0usize;
100        head.write(out, &mut off, date);
101        Out::put(out, &mut off, body);
102        Some(off)
103    }
104
105    pub fn write_head_split(self, out: &mut [u8], date: &[u8; 29]) -> Option<(usize, Shared)> {
106        let (head, _) = self.head_write();
107        if out.len() < head.wire_len() {
108            return None;
109        }
110        let mut off = 0usize;
111        head.write(out, &mut off, date);
112        Some((off, self.body))
113    }
114
115    pub fn apply_gzip(&mut self, compressed: Shared) {
116        const GZIP_EXTRA: &[u8] = b"Content-Encoding: gzip\r\nVary: Accept-Encoding\r\n";
117        self.body_len_ascii = InlineHeaderValue::from_decimal(compressed.len());
118        self.body = compressed;
119        self.head.set_extra_static(GZIP_EXTRA);
120    }
121}
sark_core/http/response/fixed.rs

sark_core/http/response/
fixed.rs
