diff options
| author | Nick Moore <nick@zoic.org> | 2019-05-10 13:56:33 +1000 |
|---|---|---|
| committer | Nick Moore <nick@zoic.org> | 2019-05-10 13:56:33 +1000 |
| commit | 0d08dde62e79e293a56b3d64f4e73a25beb75d76 (patch) | |
| tree | b7546674cab93aab253818a7371447707981d432 /shared-module/network | |
| parent | af0bba062275cd06577018e276ebe6c5ee0428ce (diff) | |
randomize tcp source port for adafruit/circuitpython#1800
Diffstat (limited to 'shared-module/network')
| -rw-r--r-- | shared-module/network/__init__.c | 4 | ||||
| -rw-r--r-- | shared-module/network/__init__.h | 5 |
2 files changed, 7 insertions, 2 deletions
diff --git a/shared-module/network/__init__.c b/shared-module/network/__init__.c index bf33fef7a..96648b260 100644 --- a/shared-module/network/__init__.c +++ b/shared-module/network/__init__.c @@ -99,3 +99,7 @@ void network_module_create_random_mac_address(uint8_t *mac) { mac[4] = (uint8_t)(rb2 >> 8); mac[5] = (uint8_t)(rb2); } + +uint16_t network_module_create_random_source_tcp_port(void) { + return 0xc000 | shared_modules_random_getrandbits(14); +} diff --git a/shared-module/network/__init__.h b/shared-module/network/__init__.h index 504065979..f4eb05bb5 100644 --- a/shared-module/network/__init__.h +++ b/shared-module/network/__init__.h @@ -25,11 +25,12 @@ * THE SOFTWARE. */ -void network_module_create_random_mac_address(uint8_t *mac); - #ifndef MICROPY_INCLUDED_SHARED_MODULE_NETWORK___INIT___H #define MICROPY_INCLUDED_SHARED_MODULE_NETWORK___INIT___H +void network_module_create_random_mac_address(uint8_t *mac); +uint16_t network_module_create_random_source_tcp_port(void); + #define MOD_NETWORK_IPADDR_BUF_SIZE (4) #define MOD_NETWORK_AF_INET (2) |