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aquatic_http: write to buf ref in request serialization

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This commit is contained in:
Joakim Frostegård 2020-07-24 22:27:06 +02:00
parent fd68a5f603
commit cc46c4b72c
3 changed files with 60 additions and 57 deletions
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77
aquatic_http_protocol/src/request.rs
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@ -1,3 +1,5 @@
use std::io::Write;
use anyhow::Context;
use smartstring::{SmartString, LazyCompact};
@ -20,54 +22,37 @@ pub struct AnnounceRequest {
impl AnnounceRequest {
pub fn as_bytes(&self) -> Vec<u8> {
let mut bytes = Vec::with_capacity(
24 +
60 +
9 +
60 +
6 +
5 + // high estimate
6 +
2 + // estimate
14 + // FIXME event
9 +
1 +
20 + // numwant bad estimate
20 + // key bad estimate
13
);
fn write<W: Write>(&self, output: &mut W) -> ::std::io::Result<()> {
output.write(b"GET /announce?info_hash=")?;
urlencode_20_bytes(self.info_hash.0, output)?;
bytes.extend_from_slice(b"GET /announce?info_hash=");
urlencode_20_bytes(self.info_hash.0, &mut bytes);
output.write(b"&peer_id=")?;
urlencode_20_bytes(self.info_hash.0, output)?;
bytes.extend_from_slice(b"&peer_id=");
urlencode_20_bytes(self.info_hash.0, &mut bytes);
output.write(b"&port=")?;
output.write(itoa::Buffer::new().format(self.port).as_bytes())?;
bytes.extend_from_slice(b"&port=");
let _ = itoa::write(&mut bytes, self.port);
output.write(b"&left=")?;
output.write(itoa::Buffer::new().format(self.bytes_left).as_bytes())?;
bytes.extend_from_slice(b"&left=");
let _ = itoa::write(&mut bytes, self.bytes_left);
output.write(b"&event=started")?; // FIXME
bytes.extend_from_slice(b"&event=started"); // FIXME
bytes.extend_from_slice(b"&compact=");
let _ = itoa::write(&mut bytes, self.compact as u8);
output.write(b"&compact=")?;
output.write(itoa::Buffer::new().format(self.compact as u8).as_bytes())?;
if let Some(numwant) = self.numwant {
bytes.extend_from_slice(b"&numwant=");
let _ = itoa::write(&mut bytes, numwant);
output.write(b"&numwant=")?;
output.write(itoa::Buffer::new().format(numwant).as_bytes())?;
}
if let Some(ref key) = self.key {
bytes.extend_from_slice(b"&key=");
bytes.extend_from_slice(key.as_str().as_bytes());
output.write(b"&key=")?;
output.write(key.as_str().as_bytes())?;
}
bytes.extend_from_slice(b" HTTP/1.1\r\n\r\n");
output.write(b" HTTP/1.1\r\n\r\n")?;
bytes
Ok(())
}
}
@ -79,27 +64,25 @@ pub struct ScrapeRequest {
impl ScrapeRequest {
pub fn as_bytes(&self) -> Vec<u8> {
let mut bytes = Vec::new();
bytes.extend_from_slice(b"GET /scrape?");
fn write<W: Write>(&self, output: &mut W) -> ::std::io::Result<()> {
output.write(b"GET /scrape?")?;
let mut first = true;
for info_hash in self.info_hashes.iter() {
if !first {
bytes.push(b'&')
output.write(b"&")?;
}
bytes.extend_from_slice(b"info_hash=");
urlencode_20_bytes(info_hash.0, &mut bytes);
output.write(b"info_hash=")?;
urlencode_20_bytes(info_hash.0, output)?;
first = false;
}
bytes.extend_from_slice(b" HTTP/1.1\r\n\r\n");
output.write(b" HTTP/1.1\r\n\r\n")?;
bytes
Ok(())
}
}
@ -270,10 +253,10 @@ impl Request {
}
}
pub fn as_bytes(&self) -> Vec<u8> {
pub fn write<W: Write>(&self, output: &mut W) -> ::std::io::Result<()> {
match self {
Self::Announce(r) => r.as_bytes(),
Self::Scrape(r) => r.as_bytes(),
Self::Announce(r) => r.write(output),
Self::Scrape(r) => r.write(output),
}
}
}