fix(libacron/acronc/helloworld): ac_receive: 'read' should be the delta value of bytes read in the call, not the absolute position

Also clearify that 'read' is undefined if the function fails.

1 files changed, 8 insertions, 5 deletions

diff --git a/client/helloworld/main.c b/client/helloworld/main.c
index 079b957..d744851 100644
--- a/client/helloworld/main.c
+++ b/client/helloworld/main.c
@@ -349,12 +349,15 @@ int main(int argc, char **argv) {
             }
         }
         if ((r = lock())) { goto end; }
-        if ((r = ac_receive(connection, buffer, pos, bytes, &obj, &read))) {
-            bool again = r == AC_E_AGAIN;
-            if (!again) {
-                unlock();
-                goto end;
+        while (pos < bytes) {
+            if ((r = ac_receive(connection, buffer, pos, bytes, &obj, &read))) {
+                bool again = r == AC_E_AGAIN;
+                if (!again) {
+                    unlock();
+                    goto end;
+                }
             }
+            pos += read;
         }
         r = process(connection, obj);
         if ((r = unlock())) { goto end; }