Merge pull request #1351 from fengzeroz/v2.4

fix(connection): check result of recv

src/connection/connection.c

@@ -409,7 +409,7 @@ ssize_t neu_conn_recv(neu_conn_t *conn, uint8_t *buf, ssize_t len)
         zlog_error(conn->param.log,
                    "conn fd: %d, recv buf len %zd, ret: %zd, errno: %s(%d)",
                    conn->fd, len, ret, strerror(errno), errno);
-        if (errno == EPIPE || (ret == 0 && errno != 0)) {
+        if (ret == 0 || (ret == -1 && errno != EAGAIN)) {
             conn_disconnect(conn);
         }
     }