Added AbstractFetchRemote.streamPerLine(fCallback, sGetAdd) for future use of streaming data to the client.

snappymail/v/0.0.0/app/libraries/snappymail/http/stream.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace SnappyMail\HTTP;
+
+/**
+ * Can be used with JavaScript AbstractFetchRemote.streamPerLine(fCallback, sGetAdd)
+ */
+
+abstract class Stream
+{
+	public static function start(bool $binary = false)
+	{
+		\set_time_limit(0);
+		\ob_implicit_flush();
+		\ini_set('implicit_flush',1);
+		\ini_set('output_buffering', 0);
+		if ($i = \ob_get_level()) {
+			# Clear buffers:
+			while ($i-- && \ob_end_clean());
+//			if (!\ob_get_level()) \header('Content-Encoding: ');
+		}
+		// https://www.w3.org/TR/edge-arch/
+		// We just fake Drupal https://www.drupal.org/docs/8/core/modules/big-pipe/bigpipe-environment-requirements
+		\header('Surrogate-Control: no-store, content="BigPipe/1.0"');
+		// Explicitly disable caching so Varnish and other upstreams won't cache.
+		\header('Cache-Control: no-store, no-cache, must-revalidate');
+		\header('Pragma: no-cache');
+
+		// Nginx: disable fastcgi_buffering and disable gzip for this request.
+		\header('X-Accel-Buffering: no');
+
+		// Apache mod_fastcgi needs the -flush option
+		// Apache mod_proxy_fcgi needs 'flushpackets' like in <Proxy "fcgi://...." flushpackets=on></Proxy>
+		// We can't control them here
+		// We can control ending the response with \fastcgi_finish_request()
+
+		if (!$binary) {
+			\header('Content-Type: text/plain');
+		}
+	}
+
+	public static function JSON($data)
+	{
+		echo \MailSo\Base\Utils::Php2js($data) . "\n";
+		\ob_flush();
+		\flush();
+	}
+}