From e625d10c7f7b018713916f70be9f2055c5db3542 Mon Sep 17 00:00:00 2001
From: Yuji Ueki <unhappychoice@gmail.com>
Date: Thu, 24 Aug 2023 04:23:22 +0900
Subject: [PATCH] [https-proxy-agent] Support SNI as default for proxy servers
 (#237)

---
 .changeset/four-teachers-peel.md        | 5 +++++
 packages/https-proxy-agent/src/index.ts | 6 +++++-
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/four-teachers-peel.md

diff --git a/.changeset/four-teachers-peel.md b/.changeset/four-teachers-peel.md
new file mode 100644
index 00000000..08d1407b
--- /dev/null
+++ b/.changeset/four-teachers-peel.md
@@ -0,0 +1,5 @@
+---
+"https-proxy-agent": patch
+---
+
+Support SNI for proxy servers
diff --git a/packages/https-proxy-agent/src/index.ts b/packages/https-proxy-agent/src/index.ts
index d136b0c5..92fc062f 100644
--- a/packages/https-proxy-agent/src/index.ts
+++ b/packages/https-proxy-agent/src/index.ts
@@ -91,7 +91,11 @@ export class HttpsProxyAgent<Uri extends string> extends Agent {
 		let socket: net.Socket;
 		if (proxy.protocol === 'https:') {
 			debug('Creating `tls.Socket`: %o', this.connectOpts);
-			socket = tls.connect(this.connectOpts);
+			const servername = this.connectOpts.servername || this.connectOpts.host;
+			socket = tls.connect({
+				...this.connectOpts,
+				servername: servername && net.isIP(servername) ? undefined : servername
+			});
 		} else {
 			debug('Creating `net.Socket`: %o', this.connectOpts);
 			socket = net.connect(this.connectOpts);