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mbedtls: handle NET_SEND_FAILED

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Under the condition the associated client went away (turn off WLAN at the
client), we can spin forever mistaking NET_SEND_FAILED for WANT_WRITE,
which was also true.  This makes sure we understand that was fatal
immediately.
This commit is contained in:
Andy Green 2017-11-24 11:47:13 +08:00
parent b06665b851
commit c5f6d180dd
1 changed files with 4 additions and 1 deletions
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5
lib/tls/mbedtls/wrapper/platform/ssl_pm.c
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@ -377,8 +377,10 @@ int ssl_pm_read(SSL *ssl, void *buffer, int len)
ret = mbedtls_ssl_read(&ssl_pm->ssl, buffer, len);
if (ret < 0) {
//printf("%s: mbedtls_ssl_read says -0x%x\n", __func__, -ret);
SSL_DEBUG(SSL_PLATFORM_ERROR_LEVEL, "mbedtls_ssl_read() return -0x%x", -ret);
if (ret == MBEDTLS_ERR_NET_CONN_RESET)
if (ret == MBEDTLS_ERR_NET_CONN_RESET ||
ret <= MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE) /* fatal errors */
ssl->err = SSL_ERROR_SYSCALL;
ret = -1;
}
@ -418,6 +420,7 @@ int ssl_pm_send(SSL *ssl, const void *buffer, int len)
if (ret < 0) {
SSL_DEBUG(SSL_PLATFORM_ERROR_LEVEL, "mbedtls_ssl_write() return -0x%x", -ret);
switch (ret) {
case MBEDTLS_ERR_NET_SEND_FAILED:
case MBEDTLS_ERR_NET_CONN_RESET:
ssl->err = SSL_ERROR_SYSCALL;
break;