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Limit the number of mbed_ssl_read() in while loop.

pull/3240/head
Seppo Takalo 2016-03-30 14:23:47 +03:00
parent db2e77fd97
commit 9752d7c5f7
1 changed files with 6 additions and 3 deletions
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9
source/coap_security_handler.c
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@ -498,12 +498,15 @@ int coap_security_send_close_alert(coap_security_t *sec)
int coap_security_handler_read(coap_security_t *sec, unsigned char* buffer, size_t len){
int ret=-1;
int max_loops = 100;
if( sec && buffer ){
memset( buffer, 0, len );
do ret = mbedtls_ssl_read( &sec->_ssl, buffer, len );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
do {
ret = mbedtls_ssl_read( &sec->_ssl, buffer, len );
} while( (ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE)
&& --max_loops);
}
return ret; //bytes read
}