Merge pull request #1068 from dfinity/paulliu/drop-host-header

fix: drop Host header in https outcall request

Author: ninegua

motoko/send_http_post/src/send_http_post_backend/main.mo

@@ -31,7 +31,6 @@ actor {
     //idempotency keys should be unique so we create a function that generates them.
     let idempotency_key : Text = generateUUID();
     let request_headers = [
-      { name = "Host"; value = host # ":443" },
       { name = "User-Agent"; value = "http_post_sample" },
       { name = "Content-Type"; value = "application/json" },
       { name = "Idempotency-Key"; value = idempotency_key },

rust/send_http_get/src/send_http_get_backend/src/lib.rs

@@ -37,10 +37,6 @@ async fn get_icp_usd_exchange() -> String {
     // 2.2 prepare headers for the system http_request call
     //Note that `HttpHeader` is declared in line 4
     let request_headers = vec![
-        HttpHeader {
-            name: "Host".to_string(),
-            value: format!("{host}:443"),
-        },
         HttpHeader {
             name: "User-Agent".to_string(),
             value: "exchange_rate_canister".to_string(),

rust/send_http_post/src/send_http_post_backend/src/lib.rs

@@ -28,10 +28,6 @@ async fn send_http_post_request() -> String {
     // 2.2 prepare headers for the system http_request call
     //Note that `HttpHeader` is declared in line 4
     let request_headers = vec![
-        HttpHeader {
-            name: "Host".to_string(),
-            value: format!("{host}:443"),
-        },
         HttpHeader {
             name: "User-Agent".to_string(),
             value: "demo_HTTP_POST_canister".to_string(),
@@ -191,4 +187,4 @@ fn transform(raw: TransformArgs) -> HttpResponse {
         ic_cdk::api::print(format!("Received an error from coinbase: err = {:?}", raw));
     }
     res
-}
+}