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Fixes an SSL / TLS socket blocking problem #80

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Fixes an SSL / TLS socket blocking problem #80

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10 changes: 9 additions & 1 deletion esp32/mods/modwlan.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1373,8 +1373,16 @@ static int wlan_socket_recv(mod_network_socket_obj_t *s, byte *buf, mp_uint_t le
mp_obj_ssl_socket_t *ss = (mp_obj_ssl_socket_t *)s;
do {
ret = mbedtls_ssl_read(&ss->ssl, (unsigned char *)buf, len);
if (ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE || ret == MBEDTLS_ERR_SSL_TIMEOUT) {
if (ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
// do nothing
} else if(ret == MBEDTLS_ERR_SSL_TIMEOUT){
// printf("SSL timeout recieved\n");
// non-blocking return
if(s->sock_base.timeout == 0){
ret = 0;
break;
}
// blocking do nothing
} else if (ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY) {
// printf("Close notify received\n");
ret = 0;
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