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altcp_mbedtls: don't ignore return value of mbedtls_ssl_flush_output

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see bug #64045/task #16283
This commit is contained in:
Simon Goldschmidt 2023-10-11 21:18:56 +02:00
parent 7fd1350802
commit 583f352f60
1 changed files with 12 additions and 3 deletions
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15
src/apps/altcp_tls/altcp_tls_mbedtls.c
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@ -133,6 +133,15 @@ static err_t altcp_mbedtls_handle_rx_appldata(struct altcp_pcb *conn, altcp_mbed
static int altcp_mbedtls_bio_send(void *ctx, const unsigned char *dataptr, size_t size);
static void
altcp_mbedtls_flush_output(altcp_mbedtls_state_t* state)
{
int flushed = mbedtls_ssl_flush_output(&state->ssl_context);
if (flushed) {
LWIP_DEBUGF(ALTCP_MBEDTLS_DEBUG, ("mbedtls_ssl_flush_output failed: %d\n", flushed));
}
}
/* callback functions from inner/lower connection: */
/** Accept callback from lower connection (i.e. TCP)
@ -531,7 +540,7 @@ altcp_mbedtls_lower_sent(void *arg, struct altcp_pcb *inner_conn, u16_t len)
/* remove ACKed bytes from overhead adjust counter */
state->overhead_bytes_adjust -= len;
/* try to send more if we failed before (may increase overhead adjust counter) */
mbedtls_ssl_flush_output(&state->ssl_context);
altcp_mbedtls_flush_output(state);
/* remove calculated overhead from ACKed bytes len */
app_len = len - (u16_t)overhead;
/* update application write counter and inform application */
@ -559,7 +568,7 @@ altcp_mbedtls_lower_poll(void *arg, struct altcp_pcb *inner_conn)
if (conn->state) {
altcp_mbedtls_state_t *state = (altcp_mbedtls_state_t *)conn->state;
/* try to send more if we failed before */
mbedtls_ssl_flush_output(&state->ssl_context);
altcp_mbedtls_flush_output(state);
if (altcp_mbedtls_handle_rx_appldata(conn, state) == ERR_ABRT) {
return ERR_ABRT;
}
@ -1233,7 +1242,7 @@ altcp_mbedtls_write(struct altcp_pcb *conn, const void *dataptr, u16_t len, u8_t
allow sending more if this succeeded (this is a hack because neither
returning 0 nor MBEDTLS_ERR_SSL_WANT_WRITE worked for me) */
if (state->ssl_context.out_left) {
mbedtls_ssl_flush_output(&state->ssl_context);
altcp_mbedtls_flush_output(state);
if (state->ssl_context.out_left) {
return ERR_MEM;
}