Module sys/udp
sys/udp
Async UDP socket operations.
Provides UDP socket wrappers around the low-level C runtime externs.
Reuses SockAddr and address helpers from tcp.yo.
All async operations return IOFuture which resolves to:
- Positive value: success (fd for socket, bytes for sendto/recvfrom, 0 for others)
- Negative value: -errno on failure
Functions
socket
function
fn(domain : i32, protocol : i32) -> IOFuture
Parameters
| Name | Type | Notes |
|---|---|---|
domain | i32 | |
protocol | i32 |
Returns: IOFuture
bind
function
fn(sockfd : i32, addr : *(u8), addrlen : u32) -> IOFuture
Parameters
| Name | Type | Notes |
|---|---|---|
sockfd | i32 | |
addr | *(u8) | |
addrlen | u32 |
Returns: IOFuture
sendto
function
fn(sockfd : i32, buf : *(u8), len : usize, flags : i32, dest_addr : *(u8), addrlen : u32) -> IOFuture
Parameters
| Name | Type | Notes |
|---|---|---|
sockfd | i32 | |
buf | *(u8) | |
len | usize | |
flags | i32 | |
dest_addr | *(u8) | |
addrlen | u32 |
Returns: IOFuture
recvfrom
function
fn(sockfd : i32, buf : *(u8), len : usize, flags : i32, src_addr : *(u8), addrlen : *(u32)) -> IOFuture
Parameters
| Name | Type | Notes |
|---|---|---|
sockfd | i32 | |
buf | *(u8) | |
len | usize | |
flags | i32 | |
src_addr | *(u8) | |
addrlen | *(u32) |
Returns: IOFuture
send
function
fn(sockfd : i32, buf : *(u8), len : usize, flags : i32) -> IOFuture
Parameters
| Name | Type | Notes |
|---|---|---|
sockfd | i32 | |
buf | *(u8) | |
len | usize | |
flags | i32 |
Returns: IOFuture
recv
function
fn(sockfd : i32, buf : *(u8), len : usize, flags : i32) -> IOFuture
Parameters
| Name | Type | Notes |
|---|---|---|
sockfd | i32 | |
buf | *(u8) | |
len | usize | |
flags | i32 |
Returns: IOFuture
setsockopt
function
fn(sockfd : i32, level : i32, optname : i32, optval : *(u8), optlen : u32) -> IOFuture
Parameters
| Name | Type | Notes |
|---|---|---|
sockfd | i32 | |
level | i32 | |
optname | i32 | |
optval | *(u8) | |
optlen | u32 |
Returns: IOFuture
getsockopt
function
fn(sockfd : i32, level : i32, optname : i32, optval : *(u8), optlen : *(u32)) -> IOFuture
Parameters
| Name | Type | Notes |
|---|---|---|
sockfd | i32 | |
level | i32 | |
optname | i32 | |
optval | *(u8) | |
optlen | *(u32) |
Returns: IOFuture