From d655083ef898ee74dbde2543f0f0e27dffa3175d Mon Sep 17 00:00:00 2001
From: David McGillicuddy <david.mcgillicuddy@moixa.com>
Date: Thu, 6 Jan 2022 12:30:19 +0000
Subject: [PATCH] replace str_split_once to lower msrv to 1.50.0

---
 README.md                     |  2 +-
 actix-tls/CHANGES.md          |  2 +-
 actix-tls/src/connect/host.rs | 16 ++++++++++++----
 3 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index a7cb8560..bd76918b 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ See `actix-server/examples` and `actix-tls/examples` for some basic examples.
 
 ### MSRV
 
-This repo's Minimum Supported Rust Version (MSRV) is 1.46.0.
+This repo's Minimum Supported Rust Version (MSRV) is 1.50.0.
 
 ## License
 
diff --git a/actix-tls/CHANGES.md b/actix-tls/CHANGES.md
index e491f0af..a643d708 100644
--- a/actix-tls/CHANGES.md
+++ b/actix-tls/CHANGES.md
@@ -1,7 +1,7 @@
 # Changes
 
 ## Unreleased - 2021-xx-xx
-
+- Remove use of `str::split_once` to lower MSRV to 1.50.0 and update the README to correctly report that
 
 ## 3.0.0 - 2021-12-26
 * No significant changes since `3.0.0-rc.2`.
diff --git a/actix-tls/src/connect/host.rs b/actix-tls/src/connect/host.rs
index c4ff9a01..13780751 100644
--- a/actix-tls/src/connect/host.rs
+++ b/actix-tls/src/connect/host.rs
@@ -27,25 +27,25 @@ pub trait Host: Unpin + 'static {
 
 impl Host for String {
     fn hostname(&self) -> &str {
-        self.split_once(':')
+        str_split_once(self, ':')
             .map(|(hostname, _)| hostname)
             .unwrap_or(self)
     }
 
     fn port(&self) -> Option<u16> {
-        self.split_once(':').and_then(|(_, port)| port.parse().ok())
+        str_split_once(self, ':').and_then(|(_, port)| port.parse().ok())
     }
 }
 
 impl Host for &'static str {
     fn hostname(&self) -> &str {
-        self.split_once(':')
+        str_split_once(self, ':')
             .map(|(hostname, _)| hostname)
             .unwrap_or(self)
     }
 
     fn port(&self) -> Option<u16> {
-        self.split_once(':').and_then(|(_, port)| port.parse().ok())
+        str_split_once(self, ':').and_then(|(_, port)| port.parse().ok())
     }
 }
 
@@ -69,3 +69,11 @@ mod tests {
         assert_connection_info_eq!("example.com:false:false", "example.com", None);
     }
 }
+
+// `str::split_once` is stabilized in 1.52.0
+fn str_split_once(str: &str, delimiter: char) -> Option<(&str, &str)> {
+    let mut splitn = str.splitn(2, delimiter);
+    let prefix = splitn.next()?;
+    let suffix = splitn.next()?;
+    Some((prefix, suffix))
+}