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Filter Cloudflare IPs in legacy mode

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Add support for REJECT_CLOUDFLARE_IPS in legacy config and fetch
Cloudflare
IP ranges to drop matching detected addresses. Improve IP detection in
legacy mode by using literal-IP primary trace URLs with hostname
fallbacks, binding dedicated IPv4/IPv6 HTTP clients, and setting a Host
override for literal-IP trace endpoints so TLS SNI works. Expose
build_split_client and update tests accordingly.
This commit is contained in:
Timothy Miller
2026-03-19 18:18:32 -04:00
parent 943e38d70c
commit 7ff8379cfb
4 changed files with 119 additions and 16 deletions
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2
src/provider.rs
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@@ -183,7 +183,7 @@ async fn fetch_trace_ip(
/// Build an HTTP client that only connects via the given IP family.
/// Binding to 0.0.0.0 forces IPv4-only; binding to [::] forces IPv6-only.
/// This ensures the trace endpoint sees the correct address family.
fn build_split_client(ip_type: IpType, timeout: Duration) -> Client {
pub fn build_split_client(ip_type: IpType, timeout: Duration) -> Client {
let local_addr: IpAddr = match ip_type {
IpType::V4 => Ipv4Addr::UNSPECIFIED.into(),
IpType::V6 => Ipv6Addr::UNSPECIFIED.into(),