From 4765a5bc1f1b8acae69fb03f2f2923f39b28e6b5 Mon Sep 17 00:00:00 2001
From: fengzero <fengzero@fengzero.com>
Date: Fri, 4 Nov 2022 08:31:22 +0000
Subject: [PATCH] connection(serial): wait reading all msg

---
 src/connection/connection.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/connection/connection.c b/src/connection/connection.c
index c6a7cd91..3e115dc0 100644
--- a/src/connection/connection.c
+++ b/src/connection/connection.c
@@ -342,6 +342,15 @@ ssize_t neu_conn_recv(neu_conn_t *conn, uint8_t *buf, ssize_t len)
         break;
     case NEU_CONN_TTY_CLIENT:
         ret = read(conn->fd, buf, len);
+        while (ret > 0 && ret < len) {
+            ssize_t rv = read(conn->fd, buf + ret, len - ret);
+            if (rv <= 0) {
+                ret = rv;
+                break;
+            }
+
+            ret += rv;
+        }
         break;
     }
     if (ret <= 0) {