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lox-simulation
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Disable open invites when censor shows up 

The censor just wins the open-entry game when it shows up. Doing it this way is much more efficient.
This commit is contained in:
Vecna 2024-06-24 16:55:51 -04:00
parent 4f66b01ed3
commit 5e7961df52
2 changed files with 212 additions and 88 deletions
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86
src/main.rs
View File

@ -13,6 +13,7 @@ use lox_simulation::{
use clap::Parser;
use lox_cli::{networking::*, *};
use lox_library::cred::Invitation;
use memory_stats::memory_stats;
use rand::{prelude::SliceRandom, Rng};
use serde::Deserialize;
@ -118,6 +119,9 @@ pub async fn main() {
// Set up users
let mut users = Vec::<User>::new();
// We have some pool of invitations available
let mut invites = Vec::<Invitation>::new();
// Set up extra-infos server
spawn(async move {
extra_infos_server::server().await;
@ -136,6 +140,9 @@ pub async fn main() {
let mut total_tn = 0;
let mut total_tp = 0;
// Get starting date
let start_date = get_date();
// Track daily percentage of users who have at least one working bridge
let mut percent_users_can_connect = Vec::<f64>::new();
@ -193,12 +200,7 @@ pub async fn main() {
// Users do daily actions
for user in &mut users {
let invited_friends = user
.daily_tasks(
&sconfig,
num_users_requesting_invites,
&mut bridges,
&mut censor,
)
.daily_tasks(&sconfig, &mut bridges, &mut censor, &mut invites)
.await;
if invited_friends.is_ok() {
@ -208,9 +210,9 @@ pub async fn main() {
}
}
// Count the number of non-censor users who are able to
// connect to at least one bridge
if !user.is_censor {
// Count the number of non-censor users who were able to
// connect to at least one bridge today
if !user.is_censor && user.attempted_connection {
if user.able_to_connect {
count_users_can_connect += 1;
} else {
@ -233,31 +235,63 @@ pub async fn main() {
}
// Add percent of users who can connect to vector
percent_users_can_connect.push(
count_users_can_connect as f64
/ (count_users_can_connect + count_users_cannot_connect) as f64,
let percent_connect_today = count_users_can_connect as f64
/ (count_users_can_connect + count_users_cannot_connect) as f64;
println!(
" Percent of users who can connect today: {}",
percent_connect_today
);
percent_users_can_connect.push(percent_connect_today);
// Add new users
users.append(&mut new_users);
// If any users couldn't get invites, they join with open-entry
// invitations
// For each user requesting an invite, see if one is available.
// If not, they can try to join via open-entry invitation if the
// censor is not active.
for _ in 0..num_users_requesting_invites {
let user = User::new(&sconfig, false, &mut bridges, &mut censor).await;
if user.is_ok() {
users.push(user.unwrap());
} else {
eprintln!("Failed to create new user.");
let mut user_created = false;
// Try invites until one works or we run out
while let Some(invite) = invites.pop() {
if let Ok(user) =
User::from_invite(invite, &sconfig, false, &mut bridges, &mut censor).await
{
users.push(user);
user_created = true;
// We got a user. Stop now.
break;
}
}
// If we couldn't get a working invite, try open-entry invite
if !user_created && !censor.is_active() {
if let Ok(user) = User::new(&sconfig, false, &mut bridges, &mut censor).await {
users.push(user);
}
}
}
// CENSOR TASKS
if censor.is_active() {
// Censor gets as many open-entry invites as possible
// On the day the censor activates, learn only the next 3 bridges (for efficiency)
if date == censor.start_date {
let num_bridges_before = censor.known_bridges.len();
// Censor gets as many invites as possible for 3 bridges
while let Ok(new_user) = User::new(&sconfig, true, &mut bridges, &mut censor).await {
// Add new censor user
users.push(new_user);
// If we now know 3 more bridges, break
if censor.known_bridges.len() >= num_bridges_before + 3 {
break;
}
}
}
if censor.is_active() {
censor.end_of_day_tasks(&sconfig, &mut bridges).await;
}
@ -429,4 +463,14 @@ pub async fn main() {
}
}
println!("End which users can connect");
println!("\nSimulation began on day {}", start_date);
println!("Censor began on day {}\n", censor.start_date);
println!("\nPercent of users who can connect per day:");
println!("date,percent");
for i in 0..percent_users_can_connect.len() {
println!("{},{}", start_date + i as u32, percent_users_can_connect[i]);
}
println!("End percent of users who can connect per day");
}

214
src/user.rs
View File

@ -9,10 +9,13 @@ use crate::{
use anyhow::{anyhow, Result};
use lox_cli::{networking::*, *};
use lox_library::{
bridge_table::BridgeLine, cred::Lox, proto::check_blockage::MIN_TRUST_LEVEL, scalar_u32,
bridge_table::BridgeLine,
cred::{Invitation, Lox},
proto::check_blockage::MIN_TRUST_LEVEL,
scalar_u32,
};
use rand::Rng;
use std::{cmp::min, collections::HashMap};
use std::collections::HashMap;
use troll_patrol::{
get_date, negative_report::NegativeReport, positive_report::PositiveReport, BridgeDistributor,
};
@ -47,6 +50,8 @@ pub struct User {
// Track date the user joined and whether they're able to connect
pub join_date: u32,
pub able_to_connect: bool,
// Attempted to connect today
pub attempted_connection: bool,
}
impl User {
@ -56,6 +61,10 @@ impl User {
bridges: &mut HashMap<[u8; 20], Bridge>,
censor: &mut Censor,
) -> Result<Self> {
if censor.is_active() && !is_censor {
return Err(anyhow!("Censor is active; open invites disabled"));
}
let cred = Self::get_new_credential(&config).await?.0;
// Decide how likely this user is to use bridges on a given day
@ -123,17 +132,17 @@ impl User {
in_censorship_range,
join_date: get_date(),
able_to_connect,
attempted_connection: true,
})
}
// TODO: This should probably return an actual error type
pub async fn invite(
// Get an invite if able
pub async fn get_invite(
&mut self,
config: &Config,
bridges: &mut HashMap<[u8; 20], Bridge>,
censor: &mut Censor,
invited_user_is_censor: bool,
) -> Result<Self> {
) -> Result<Invitation> {
let etable = get_reachability_credential(&config.la_net).await?;
let (new_cred, invite) = issue_invite(
&config.la_net,
@ -166,8 +175,17 @@ impl User {
}
}
}
Ok(invite)
}
let friend_cred = redeem_invite(
pub async fn from_invite(
invite: Invitation,
config: &Config,
is_censor: bool,
bridges: &mut HashMap<[u8; 20], Bridge>,
censor: &mut Censor,
) -> Result<Self> {
let cred = redeem_invite(
&config.la_net,
&invite,
get_lox_pub(&config.la_pubkeys),
@ -176,9 +194,6 @@ impl User {
.await?
.0;
// Calling function decides if the invited user is a censor
let is_censor = invited_user_is_censor;
// Decide how likely this user is to use bridges on a given day
// and whether they submit reports
let (prob_use_bridges, submits_reports) = if is_censor {
@ -201,7 +216,7 @@ impl User {
// Immediately download bucket and test bridges or give them to
// the censor
let mut negative_reports = Vec::<NegativeReport>::new();
let (bucket, _reachcred) = get_bucket(&config.la_net, &friend_cred).await?;
let (bucket, _reachcred) = get_bucket(&config.la_net, &cred).await?;
for bridgeline in bucket {
let fingerprint = bridgeline.get_hashed_fingerprint();
if bridgeline != BridgeLine::default() {
@ -244,13 +259,14 @@ impl User {
Ok(Self {
is_censor,
primary_cred: friend_cred,
primary_cred: cred,
secondary_cred: None,
submits_reports: submits_reports,
prob_use_bridges: prob_use_bridges,
in_censorship_range,
join_date: get_date(),
able_to_connect,
attempted_connection: true,
})
}
@ -359,14 +375,14 @@ impl User {
pub async fn daily_tasks(
&mut self,
config: &Config,
num_users_requesting_invites: u32,
bridges: &mut HashMap<[u8; 20], Bridge>,
censor: &mut Censor,
invites: &mut Vec<Invitation>,
) -> Result<Vec<User>> {
if self.is_censor {
self.daily_tasks_censor(config, bridges, censor).await
} else {
self.daily_tasks_non_censor(config, num_users_requesting_invites, bridges, censor)
self.daily_tasks_non_censor(config, bridges, censor, invites)
.await
}
}
@ -378,12 +394,38 @@ impl User {
pub async fn daily_tasks_non_censor(
&mut self,
config: &Config,
num_users_requesting_invites: u32,
bridges: &mut HashMap<[u8; 20], Bridge>,
censor: &mut Censor,
invites: &mut Vec<Invitation>,
) -> Result<Vec<User>> {
// Probabilistically decide if the user should use bridges today
if event_happens(self.prob_use_bridges) {
self.attempted_connection = true;
// If we couldn't connect yesterday, try to get a new credential via invite.
if !self.able_to_connect {
while let Some(invite) = invites.pop() {
match redeem_invite(
&config.la_net,
&invite,
get_lox_pub(&config.la_pubkeys),
get_invitation_pub(&config.la_pubkeys),
)
.await
{
Ok((cred, _bucket)) => {
self.primary_cred = cred;
// We got a credential. Stop now.
break;
}
Err(e) => {
println!("Failed to redeem invite. Error: {}", e);
}
}
}
}
// Start with the assumption that we can't connect, change
// only if we can
self.able_to_connect = false;
@ -456,12 +498,17 @@ impl User {
if self.secondary_cred.is_some() {
std::mem::replace(&mut self.secondary_cred, None)
} else {
// Get new credential
match Self::get_new_credential(&config).await {
Ok((cred, _bl)) => Some(cred),
Err(e) => {
eprintln!("Failed to get new Lox credential. Error: {}", e);
None
// If the censor is in play, we cannot get open-entry invites
if censor.is_active() {
None
} else {
// Get new credential
match Self::get_new_credential(&config).await {
Ok((cred, _bl)) => Some(cred),
Err(e) => {
eprintln!("Failed to get new Lox credential. Error: {}", e);
None
}
}
}
}
@ -629,7 +676,11 @@ impl User {
Some(v) => v,
None => 0, // This is probably an error case that should not happen
};
let mut new_friends = Vec::<User>::new();
// It's just more convenient in the code to do this this way.
// Invite censors directly as new users. If the invited user is
// not a censor, instead add the invitation to a global list.
let mut new_censors = Vec::<User>::new();
// Scale the probability of inviting a censor, based on the
// user's own trust level. We assume that users with
@ -642,24 +693,33 @@ impl User {
Some(2) => 0.5,
_ => 1.0,
};
for _i in 0..min(invitations, num_users_requesting_invites) {
for _ in 0..invitations {
if event_happens(config.prob_user_invites_friend) {
// With some probability, the user is convinced to
// invite a censor. We assume users with higher
// trust levels will be more cautious with
// invitations because they have more to lose.
let invited_friend_is_censor = censor.is_active()
&& event_happens(config.prob_censor_gets_invite * level_scale);
// Invite friend (who might be a censor)
match self
.invite(&config, bridges, censor, invited_friend_is_censor)
.await
{
Ok(friend) => {
// You really shouldn't push your friends,
// especially new ones whose boundaries you
// might not know well.
new_friends.push(friend);
match self.get_invite(config, bridges, censor).await {
Ok(invite) => {
// With some probability, the user is convinced to
// invite a censor. We assume users with higher
// trust levels will be more cautious with
// invitations because they have more to lose.
if censor.is_active()
&& event_happens(config.prob_censor_gets_invite * level_scale)
{
// Invite friend (who might be a censor)
match Self::from_invite(invite, config, true, bridges, censor).await
{
Ok(friend) => {
// You really shouldn't push your friends,
// especially new ones whose boundaries you
// might not know well.
new_censors.push(friend);
}
Err(e) => {
println!("{}", e);
}
}
} else {
invites.push(invite);
}
}
Err(e) => {
println!("{}", e);
@ -668,8 +728,12 @@ impl User {
}
}
Ok(new_friends)
Ok(new_censors)
} else {
// If we didn't try to connect, indicate so. This is to
// prevent users from being counted as able/unable to
// connect when they just haven't tried.
self.attempted_connection = false;
Ok(Vec::<User>::new())
}
}
@ -791,47 +855,63 @@ impl User {
}
}
}
} else {
// If unable to migrate, try to get a new open-entry
// credential and start over
// Removing this case for efficiency. If the censor is in
// play, we just assume it wins the open-entry game and stop
// distributing open-entry invites altogether.
/*
} else {
// If unable to migrate, try to get a new open-entry
// credential and start over
let res = Self::get_new_credential(&config).await;
if res.is_ok() {
let (new_cred, bl) = res.unwrap();
let fingerprint = bl.get_hashed_fingerprint();
if !bridges.contains_key(&fingerprint) {
let bridge = Bridge::from_bridge_line(&bl);
bridges.insert(fingerprint, bridge);
}
censor.learn_bridge(&fingerprint);
// Censor doesn't want new_cred yet
self.primary_cred = new_cred;
}
*/
}
}
// Also removing this case for efficiency.
/*
// Separately from primary credential, censor user requests a
// new secondary credential each day just to block the
// open-entry bridges. This is stored but not reused.
let res = Self::get_new_credential(&config).await;
if res.is_ok() {
let (new_cred, bl) = res.unwrap();
let (_new_cred, bl) = res.unwrap();
let fingerprint = bl.get_hashed_fingerprint();
if !bridges.contains_key(&fingerprint) {
let bridge = Bridge::from_bridge_line(&bl);
bridges.insert(fingerprint, bridge);
}
censor.learn_bridge(&fingerprint);
// Censor doesn't want new_cred yet
self.primary_cred = new_cred;
// Censor doesn't want new_cred. User doesn't actually use
// secondary_cred, so don't store it.
}
}
}
// Separately from primary credential, censor user requests a
// new secondary credential each day just to block the
// open-entry bridges. This is stored but not reused.
let res = Self::get_new_credential(&config).await;
if res.is_ok() {
let (_new_cred, bl) = res.unwrap();
let fingerprint = bl.get_hashed_fingerprint();
if !bridges.contains_key(&fingerprint) {
let bridge = Bridge::from_bridge_line(&bl);
bridges.insert(fingerprint, bridge);
}
censor.learn_bridge(&fingerprint);
// Censor doesn't want new_cred. User doesn't actually use
// secondary_cred, so don't store it.
}
*/
// Censor user invites as many censor friends as possible
let invitations = scalar_u32(&self.primary_cred.invites_remaining).unwrap();
let mut new_friends = Vec::<User>::new();
for _ in 0..invitations {
match self.invite(&config, bridges, censor, true).await {
Ok(friend) => {
new_friends.push(friend);
match self.get_invite(config, bridges, censor).await {
Ok(invite) => {
match Self::from_invite(invite, &config, true, bridges, censor).await {
Ok(friend) => {
new_friends.push(friend);
}
Err(e) => {
println!("{}", e);
}
}
}
Err(e) => {
println!("{}", e);