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fix rate limits #57

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Merged
merged 2 commits into from
Apr 10, 2024
Merged

fix rate limits #57

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b123222
ensure Fly proxy headers are correctly processed
dealloc Apr 10, 2024
f7ba2ed
apply rate limits after forwarded headers
dealloc Apr 10, 2024
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5 changes: 3 additions & 2 deletions fly.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@ kill_signal = 'SIGTERM'
auto_stop_machines = true
auto_start_machines = true
min_machines_running = 0
max_machines_running = 1
processes = ['app']

[http_service.concurrency]
Expand All @@ -27,8 +28,8 @@ kill_signal = 'SIGTERM'
soft_limit = 1000

[[http_service.checks]]
grace_period = "2s"
interval = "120s"
grace_period = "10s"
interval = "60s"
method = "GET"
timeout = "10s"
path = "/raw/api/WarSeason/current/WarID"
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18 changes: 14 additions & 4 deletions src/Helldivers-2-API/Program.cs
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Expand Up @@ -7,9 +7,12 @@
using Helldivers.Sync.Configuration;
using Helldivers.Sync.Extensions;
using Microsoft.AspNetCore.Http.Timeouts;
using Microsoft.AspNetCore.HttpOverrides;
using Microsoft.AspNetCore.Localization;
using System.Globalization;
using System.Net;
using System.Text.Json.Serialization;
using IPNetwork = Microsoft.AspNetCore.HttpOverrides.IPNetwork;

#if DEBUG
// When generating an OpenAPI document, get-document runs with the "--applicationName" flag.
Expand Down Expand Up @@ -66,7 +69,14 @@
});

// Add and configure forwarded headers middleware
builder.Services.Configure<ForwardedHeadersOptions>(_ => { });
builder.Services.Configure<ForwardedHeadersOptions>(options =>
{
options.ForwardLimit = 999;
options.OriginalForHeaderName = "Fly-Client-IP";
options.ForwardedHeaders = ForwardedHeaders.XForwardedFor;
options.KnownNetworks.Add(new IPNetwork(IPAddress.Any, 0));
options.KnownNetworks.Add(new IPNetwork(IPAddress.IPv6Any, 0));
});

// This configuration is bound here so that source generators kick in.
builder.Services.Configure<HelldiversSyncConfiguration>(builder.Configuration.GetSection("Helldivers:Synchronization"));
Expand Down Expand Up @@ -144,12 +154,12 @@
// Ensure web applications can access the API by setting CORS headers.
app.UseCors();

// Handles rate limiting so everyone plays nice
app.UseMiddleware<RateLimitMiddleware>();

// Make sure ASP.NET Core uses the correct addresses internally rather than Fly's proxy
app.UseForwardedHeaders();

// Handles rate limiting so everyone plays nice
app.UseMiddleware<RateLimitMiddleware>();

// Add middleware to timeout requests if they take too long.
app.UseRequestTimeouts();

Expand Down