[lwip-devel] [bug #28106] duplicate acknowledge for fast retransmit could have not null length

[Oleg Tyshev]

Follow-up Comment #10, bug #28106 (project lwip):

For (tcp_do_output_nagle(pcb) == 0) with TF_ACK_NOW can help following
patch:

-    if((tcp_do_output_nagle(pcb) == 0) &&
-      ((pcb->flags & (TF_NAGLEMEMERR | TF_FIN)) == 0)){
-      break;
+    if (tcp_do_output_nagle(pcb) == 0) {
+      if ((pcb->flags & (TF_NAGLEMEMERR | TF_FIN)) == 0) {
+        break;
+      }
+      else if (pcb->flags & TF_ACK_NOW) {
+        output_only_one_segment = 1;
+      }
....
+    if (output_only_one_segment) {
+      break;
+    }




(file #19175)
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Additional Item Attachment:

File name: tcp_output.patch               Size:1 KB


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