diff options
| -rw-r--r-- | extmod/modlwip.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/extmod/modlwip.c b/extmod/modlwip.c index 84383516f..1ebcd8923 100644 --- a/extmod/modlwip.c +++ b/extmod/modlwip.c @@ -288,9 +288,19 @@ STATIC err_t _lwip_tcp_connected(void *arg, struct tcp_pcb *tpcb, err_t err) { return ERR_OK; } +// By default, a child socket of listen socket is created with recv +// handler which discards incoming pbuf's. We don't want to do that, +// so set this handler which requests lwIP to keep pbuf's and deliver +// them later. We cannot cache pbufs in child socket on Python side, +// until it is created in accept(). +STATIC err_t _lwip_tcp_recv_unaccepted(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err) { + return ERR_BUF; +} + // Callback for incoming tcp connections. STATIC err_t _lwip_tcp_accept(void *arg, struct tcp_pcb *newpcb, err_t err) { lwip_socket_obj_t *socket = (lwip_socket_obj_t*)arg; + tcp_recv(newpcb, _lwip_tcp_recv_unaccepted); if (socket->incoming.connection != NULL) { // We need to handle this better. This single-level structure makes the |