aet_sagredo_fastremote_patch_20230301_1435.patch

diff -ruN netqmail-1.06-original/qmail-remote.c netqmail-1.06-sagredo/qmail-remote.c
--- netqmail-1.06-original/qmail-remote.c	2023-03-01 14:21:52.117666700 +0400
+++ netqmail-1.06-sagredo/qmail-remote.c	2023-03-01 14:33:18.689998100 +0400
@@ -331,33 +331,38 @@
 void blast()
 {
   int r;
+  int i;
+  int o;
   char ch;
+  char in[4096];
+  char out[4096*2+1];
+  int sol;
 
-  for (;;) {
-    r = substdio_get(&ssin,&ch,1);
+  for (sol = 1;;) {
+    r = substdio_get(&ssin,in,sizeof in);
     if (r == 0) break;
     if (r == -1) temp_read();
-    if (ch == '.')
-      substdio_put(&smtpto,".",1);
-    while (ch != '\n') {
-      if (ch == '\r') {
-	r = substdio_get(&ssin, &ch, 1);
-	if (r == 0)
-		break;
-	if (r == -1) temp_read();
-	if (ch != '\n') {
-		substdio_put(&smtpto, "\r\n", 2);
-	} else
-		break;
+    for (i = o = 0; i < r; ) {
+      if (sol && in[i] == '.') {
+        out[o++] = '.';
+        out[o++] = in[i++];
+      }
+      sol = 0;
+      while (i < r) {
+	    if (in[i] == '\n') {
+	      sol = 1;
+	      ++i;
+	      out[o++] = '\r';
+	      out[o++] = '\n';
+	      break;
+	    }
+	    out[o++] = in[i++];
       }
-      substdio_put(&smtpto,&ch,1);
-      r = substdio_get(&ssin,&ch,1);
-      if (r == 0) perm_partialline();
-      if (r == -1) temp_read();
     }
-    substdio_put(&smtpto,"\r\n",2);
+    substdio_put(&smtpto,out,o);  
   }
  
+  if (!sol) perm_partialline();
   flagcritical = 1;
   substdio_put(&smtpto,".\r\n",3);
   substdio_flush(&smtpto);