CLI server: remove "Host" header reflection from response

The server previously responded with a copy of the requested "Host" header in
the response, without any validation. That header, as defined in RFC 9110, is
intended for use in *requests*; remove it from the responses.

Author: DanielEScherzer

ext/curl/tests/curl_setopt_CURLOPT_WRITEHEADER.phpt

@@ -28,7 +28,6 @@ echo $header_contents, "\n";
 ?>
 --EXPECTF--
 HTTP/1.1 200 OK
-Host: localhost:%d
 Date: %s
 Connection: close
 X-Powered-By: PHP/%s

ext/soap/tests/bugs/bug49278.phpt

@@ -51,7 +51,6 @@ Content-Length: %d
 
 "
 string(%s) "HTTP/1.1 200 OK
-Host: %s
 Date: %s
 Connection: close
 X-Powered-By: PHP/%s

sapi/cli/php_cli_server.c

@@ -359,7 +359,6 @@ static void append_http_status_line(smart_str *buffer, int protocol_version, int
 
 static void append_essential_headers(smart_str* buffer, php_cli_server_client *client, bool persistent, sapi_headers_struct *sapi_headers) /* {{{ */
 {
-	zval *val;
 	struct timeval tv = {0};
 	bool append_date_header = true;
 
@@ -377,12 +376,6 @@ static void append_essential_headers(smart_str* buffer, php_cli_server_client *c
 		}
 	}
 
-	if (NULL != (val = zend_hash_find(&client->request.headers, ZSTR_KNOWN(ZEND_STR_HOST)))) {
-		smart_str_appends_ex(buffer, "Host: ", persistent);
-		smart_str_append_ex(buffer, Z_STR_P(val), persistent);
-		smart_str_appends_ex(buffer, "\r\n", persistent);
-	}
-
 	if (append_date_header && !gettimeofday(&tv, NULL)) {
 		zend_string *dt = php_format_date("D, d M Y H:i:s", sizeof("D, d M Y H:i:s") - 1, tv.tv_sec, 0);
 		smart_str_appends_ex(buffer, "Date: ", persistent);

sapi/cli/tests/bug43177.phpt

@@ -55,29 +55,25 @@ HEADER
 ?>
 --EXPECTF--
 HTTP/1.1 200 OK
-Host: localhost
 Date: %s
 Connection: close
 X-Powered-By: %s
 Content-type: text/html; charset=UTF-8
 
 OK
 HTTP/1.0 500 Internal Server Error
-Host: localhost
 Date: %s
 Connection: close
 X-Powered-By: %s
 Content-type: text/html; charset=UTF-8
 
 HTTP/1.0 500 Internal Server Error
-Host: localhost
 Date: %s
 Connection: close
 X-Powered-By: %s
 Content-type: text/html; charset=UTF-8
 
 HTTP/1.0 500 Internal Server Error
-Host: localhost
 Date: %s
 Connection: close
 X-Powered-By: %s

sapi/cli/tests/bug65066_100.phpt

@@ -28,7 +28,6 @@ HEADER
 ?>
 --EXPECTF--
 HTTP/1.1 100 Continue
-Host: %s
 Date: %s
 Connection: close
 X-Powered-By: PHP/%s

sapi/cli/tests/bug65066_422.phpt

@@ -28,7 +28,6 @@ HEADER
 ?>
 --EXPECTF--
 HTTP/1.1 422 Unknown Status Code
-Host: %s
 Date: %s
 Connection: close
 X-Powered-By: PHP/%s

sapi/cli/tests/bug65066_511.phpt

@@ -28,7 +28,6 @@ HEADER
 ?>
 --EXPECTF--
 HTTP/1.1 511 Network Authentication Required
-Host: %s
 Date: %s
 Connection: close
 X-Powered-By: PHP/%s

sapi/cli/tests/bug66606_2.phpt

@@ -32,7 +32,6 @@ fclose($fp);
 ?>
 --EXPECTF--
 HTTP/1.1 200 OK
-Host: %s
 Date: %s
 Connection: close
 X-Powered-By: PHP/%s

sapi/cli/tests/bug66830.phpt

@@ -31,7 +31,6 @@ fclose($fp);
 ?>
 --EXPECTF--
 HTTP/1.1 200 OK
-Host: %s
 Date: %s
 Connection: close
 X-Powered-By: %s

sapi/cli/tests/bug71005.phpt

@@ -33,7 +33,6 @@ HEADER
 ?>
 --EXPECTF--
 HTTP/1.1 200 OK
-Host: %s
 Date: %s
 Connection: close
 X-Powered-By: PHP/%s