replace itertools with just either

Cargo.lock

@@ -16,9 +16,9 @@ checksum = "9ac26892eaac40bd0a28b3a1ea93da165ef30f8ffbc3ac6fea430daf7091de58"
 
 [[package]]
 name = "either"
-version = "1.13.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
 [[package]]
 name = "fnv"
@@ -43,15 +43,6 @@ version = "2.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ddc24109865250148c2e0f3d25d4f0f479571723792d3802153c60922a4fb708"
 
-[[package]]
-name = "itertools"
-version = "0.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itoa"
 version = "1.0.14"
@@ -63,9 +54,9 @@ name = "real-ip"
 version = "0.1.0"
 dependencies = [
  "comma-separated",
+ "either",
  "http",
  "ipnet",
- "itertools",
  "rfc7239",
 ]
 

Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2021"
 repository = "https://codeberg.org/icewind/real-ip"
 license = "MIT OR Apache-2.0"
-rust-version = "1.60.0"
+rust-version = "1.63.0"
 description = "Get the \"real ip\" of an incoming request using the \"forwarded\", \"x-forwarded-for\" or \"x-real-ip\" headers set by reverse proxies."
 
 [dependencies]
@@ -12,4 +12,4 @@ http = "1.1.0"
 rfc7239 = "0.1.2"
 comma-separated = "0.1.0"
 ipnet = "2.10.1"
-itertools = "0.13.0"
+either = "1.15.0"

src/lib.rs

@@ -58,9 +58,9 @@ pub mod headers;
 use crate::headers::{
     extract_forwarded_header, extract_real_ip_header, extract_x_forwarded_for_header,
 };
+use either::Either;
 use http::HeaderMap;
 pub use ipnet::IpNet;
-use itertools::Either;
 use std::iter::{empty, once};
 use std::net::IpAddr;