From 99cd43dfd3c8954d33f9e00fc8d1596af06e87e7 Mon Sep 17 00:00:00 2001
From: lionel-rowe <lionel.rowe@gmail.com>
Date: Wed, 15 Feb 2023 19:54:03 +0800
Subject: [PATCH] fix: Correctly canonicalize query param spaces

---
 mod.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mod.ts b/mod.ts
index c06afb8..8ce5d64 100644
--- a/mod.ts
+++ b/mod.ts
@@ -76,7 +76,8 @@ export class AWSSignerV4 implements Signer {
     const urlObj = new URL(request.url);
     const { host, pathname, searchParams } = urlObj;
     searchParams.sort();
-    const canonicalQuerystring = searchParams.toString();
+	// per https://docs.aws.amazon.com/general/latest/gr/create-signed-request.html#create-canonical-request
+    const canonicalQuerystring = searchParams.toString().replaceAll("+", "%20");
 
     const headers = new Headers(request.headers);