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picow: if initial write fails, write at most 1 TCP MSS of data

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Jeff Epler 2022-10-17 17:25:40 -05:00
parent 1975742d9f
commit 861b22730e
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1 changed files with 5 additions and 0 deletions
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5
ports/raspberrypi/common-hal/socketpool/Socket.c
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@ -504,6 +504,11 @@ STATIC mp_uint_t lwip_tcp_send(socketpool_socket_obj_t *socket, const byte *buf,
if (err != ERR_MEM) {
break;
}
if (err == ERR_MEM && write_len > TCP_MSS) {
// Try writing just one MSS worth of data
write_len = TCP_MSS;
continue;
}
err = tcp_output(socket->pcb.tcp);
if (err != ERR_OK) {
break;