2023-03-30 22:28:27 +00:00
|
|
|
## BSD Socket Extension API
|
|
|
|
|
|
|
|
Most functions will return -2 if the bsdsocket.library is
|
|
|
|
not open.
|
|
|
|
|
|
|
|
### Setup
|
|
|
|
|
|
|
|
#### ADDR=Socket Library Open
|
|
|
|
|
|
|
|
Try to open bsdsocket.library version 4.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* 0 if opening failed
|
|
|
|
* Memory address of library on success
|
|
|
|
* If needed, you'll be able to directly access library functions
|
|
|
|
using this address.
|
|
|
|
|
|
|
|
#### Socket Library Close
|
|
|
|
|
|
|
|
Close bsdsocket.library. This is safe to call if the library
|
|
|
|
is not open
|
|
|
|
|
|
|
|
#### RESULT=Socket Set Nonblocking(Socket, IsNonblocking BOOL)
|
|
|
|
|
|
|
|
Make a socket blocking (False, default), or nonblocking (True).
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Result of IoctlSocket call.
|
|
|
|
|
|
|
|
#### RESULT=Socket Reuse Addr(Socket)
|
|
|
|
|
|
|
|
Make a listening socket reuse the address it's trying to bind to.
|
|
|
|
You probably want to call this right before Socket Listen.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Result of setsockopt call.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Connections
|
|
|
|
|
|
|
|
#### SOCKET=Socket Create Inet Socket
|
|
|
|
|
|
|
|
Create a new Internet socket for reading or writing.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Socket number on success
|
|
|
|
* -1 on failure
|
|
|
|
|
|
|
|
#### RESULT=Socket Connect(Socket to IPAddress$, Port)
|
|
|
|
|
|
|
|
Attempt to connect to a remote host. Currently doesn't
|
|
|
|
support DNS lookups.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* 0 on connected
|
|
|
|
* -1 on error
|
|
|
|
* If your socket is non-blocking, you have to check
|
|
|
|
the socket with Socket Select and Socket Getsockopt Int
|
|
|
|
to see if the connection succeeded
|
|
|
|
* -11 port out of range
|
|
|
|
|
|
|
|
#### RESULT=Socket Reuse Addr(Socket)
|
|
|
|
|
|
|
|
Set a server socket to reuse an interface and port that had
|
|
|
|
been used recently. You likely want this if you're building
|
|
|
|
something that listens on a port for connections. This calls
|
|
|
|
setsockopt() for you.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
The result of calling setsockopt() while setting your socket
|
|
|
|
to reuse addresses.
|
|
|
|
|
|
|
|
#### RESULT=Socket Bind(Socket to IPAddress, Port)
|
|
|
|
|
|
|
|
Attempt to bind a socket to a network interface. Use
|
|
|
|
the string "IPADDR_ANY" for IPAddress to bind to all
|
|
|
|
interfaces.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* 0 on success
|
|
|
|
* -1 on other error
|
|
|
|
* -11 port out of range
|
|
|
|
|
|
|
|
#### RESULT=Socket Listen(Socket)
|
|
|
|
|
|
|
|
Start listening for connections.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* 0 on success
|
|
|
|
* -1 on failure
|
|
|
|
|
|
|
|
#### NEW_SOCKET=Socket Accept(Socket)
|
|
|
|
|
|
|
|
Get the socket that connected to this one. Wait for a connect
|
|
|
|
if this socket is blocking.
|
|
|
|
|
|
|
|
##### Warning
|
|
|
|
|
|
|
|
If this socket is blocking (the default), you will likely
|
|
|
|
get AMOS stuck in a state you can't recover from, due to
|
|
|
|
how AMOS takes over system signals! Be sure to make your
|
|
|
|
socket non-blocking and use Fdsets and Select!
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* The remote socket number on success
|
|
|
|
* -1 on failure
|
|
|
|
|
|
|
|
#### RESULT=Socket Async Wait Reading(Socket, Wait_ms)
|
|
|
|
|
|
|
|
Wait the given number of milliseconds for the nonblocking socket to be ready for reading.
|
|
|
|
Use this when you're waiting for a client to connect to you, or if you're waiting for
|
|
|
|
a remote socket to send you data.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
2023-04-03 21:24:22 +00:00
|
|
|
* 0 on timeout.
|
|
|
|
* -1 on error. Use `Socket Errno` for more detail.
|
|
|
|
* -3 on the socket being sorta-ready. This isn't a connection timeout,
|
|
|
|
so check again.
|
|
|
|
* 1 on success.
|
2023-03-30 22:28:27 +00:00
|
|
|
|
|
|
|
#### RESULT=Socket Async Wait Writing(Socket, Wait_ms)
|
|
|
|
|
|
|
|
Wait the given number of milliseconds for the nonblocking socket to be ready for writing.
|
|
|
|
Use this when you're connecting to a remote server and want to know if the connection
|
|
|
|
has been completed.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
2023-04-03 21:24:22 +00:00
|
|
|
* 0 on timeout.
|
|
|
|
* -1 on error. Use `Socket Errno` for more detail.
|
|
|
|
* -3 on the socket being sorta-ready. This isn't a connection timeout,
|
|
|
|
so check again.
|
|
|
|
* 1 on success.
|
2023-03-30 22:28:27 +00:00
|
|
|
|
|
|
|
#### RESULT=Socket Set Timeout(Socket, Wait_ms)
|
|
|
|
|
|
|
|
Set a socket to timeout after Wait_ms milliseconds if reading or writing doesn't complete.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* 0 on success
|
|
|
|
* -1 on error
|
|
|
|
|
|
|
|
#### RESULT=Socket Close(Socket)
|
|
|
|
|
|
|
|
Close a socket.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* 0 on success
|
|
|
|
* -1 on error
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Data Transfers
|
|
|
|
|
|
|
|
#### SENT=Socket Send$(Socket, String$)
|
|
|
|
|
|
|
|
Send a string to a connected socket.
|
|
|
|
|
|
|
|
##### Bugs
|
|
|
|
|
|
|
|
For some reason, this command performs incorrectly when
|
|
|
|
used in a Procedure to send a passed-in variable,
|
|
|
|
and Varptr() is not called on the string variable to be sent
|
|
|
|
beforehand within the procedure itself. I believe this is
|
|
|
|
a bug in AMOS itself. You'll know you're having this issue if
|
|
|
|
the byte count returned is abnormally high.
|
|
|
|
|
|
|
|
If you're using this in a Procedure, call Varptr() first:
|
|
|
|
|
|
|
|
```
|
|
|
|
Procedure SEND_STRING[SOCKET, S$]
|
|
|
|
' _shrug_
|
|
|
|
_=Varptr(S$)
|
|
|
|
|
|
|
|
BYTES=Socket Send$(SOCKET,S$)
|
|
|
|
End Proc
|
|
|
|
```
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Number of characters sent
|
|
|
|
* -1 on other error
|
|
|
|
|
|
|
|
#### SENT=Socket Send(Socket, Data Pointer, Length)
|
|
|
|
|
|
|
|
Send a block of data to a connected socket.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Number of characters sent
|
|
|
|
* -1 on other error
|
|
|
|
|
|
|
|
#### DATA$=Socket Recv$(Socket, MaxLength)
|
|
|
|
|
|
|
|
Retrieve at most MaxLength bytes from Socket, and put them into a string.
|
|
|
|
If Len(DATA$) < MaxLength, you've read the last bit of data from the socket.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* String of data, which is blank if there is no more data.
|
|
|
|
|
|
|
|
### LENGTH=Socket Recv(Socket to Dataptr, MaxLength)
|
|
|
|
|
|
|
|
Retrieve at most MaxLength bytes from Socket, and put them into the memory
|
|
|
|
address at Dataptr.
|
|
|
|
|
|
|
|
#### Returns
|
|
|
|
|
|
|
|
* Count of bytes read
|
|
|
|
* -1 on error
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Informational
|
|
|
|
|
|
|
|
#### HOST=Socket Get Host(Socket)
|
|
|
|
|
|
|
|
Get the IPv4 (Long) host value the given socket is using.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Host as a long value
|
|
|
|
|
|
|
|
#### PORT=Socket Get Port(Socket)
|
|
|
|
|
|
|
|
Get the 16-bit port (Word) value the given socket is using.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Port as a word value
|
|
|
|
|
|
|
|
#### RESULT$=Socket Inet Ntoa$(Host)
|
|
|
|
|
|
|
|
Turn a long Host address into a string.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* IP address as string
|
|
|
|
|
|
|
|
#### RESULT=Socket Errno
|
|
|
|
|
|
|
|
Get the error from the last command. Note that this is
|
|
|
|
not cleared on a successful command!
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
Error number from last call. Look in <sys/error.h> for more
|
|
|
|
details.
|
|
|
|
|
|
|
|
#### RESULT$=Dns Get Address By Name$(Domain Name$)
|
|
|
|
|
|
|
|
Look up the first IP address associated with this hostname.
|
|
|
|
|
|
|
|
##### Warning
|
|
|
|
|
|
|
|
This is dependent on your stack's name resolution. If DNS lookups
|
|
|
|
aren't working correctly, you may have to wait for the lookup to time
|
|
|
|
out. There's no way to set this timeout, or cancel or override it via AMOS.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
String with IP address, or blank string on error.
|
|
|
|
|
|
|
|
#### RESULT=Socket Status(Socket)
|
|
|
|
|
|
|
|
Returns basic connection information about a socket.
|
|
|
|
|
|
|
|
##### Warning
|
|
|
|
|
|
|
|
Since none of the socket processing of this extension happens in the
|
|
|
|
background, you're likely better off using other means to detect
|
|
|
|
socket status.
|
|
|
|
|
|
|
|
* Disconnected: Try a recv and get zero bytes back. Check Socket Errno.
|
|
|
|
* Broken: Try a send. If it fails, check Socket Errno.
|
|
|
|
* Ready: Use the Async Wait functions.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
Status of socket:
|
|
|
|
|
|
|
|
* 0 = Closed
|
|
|
|
* 2 = Listening
|
|
|
|
* 6 = Connecting
|
|
|
|
* 7 = Connected
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### Low Level
|
|
|
|
|
|
|
|
#### RESULT=Socket Setsockopt Int(Socket, Option, Value)
|
|
|
|
|
|
|
|
Set a socket option. You probably want SO_REUSEADDR,
|
|
|
|
which is Option=$4, and you want Value=True. Or, use
|
|
|
|
Socket Reuse Addr().
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Result of setsockopt call
|
|
|
|
|
|
|
|
#### RESULT=Socket Getsockopt Int(Socket, Option)
|
|
|
|
|
|
|
|
Get a socket option. You probably want SO_ERROR,
|
|
|
|
which is Option=$1007, and it's what you check when you
|
|
|
|
attempt a connection with a non-blocking socket.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Result of getsockopt call
|
|
|
|
|
|
|
|
#### ADDR=Socket Fdset Zero(fd_set)
|
|
|
|
|
|
|
|
Clear out the specified fd_set.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Address to that particular fd_set
|
|
|
|
* -1 if fd_set out of range. You get 16 of them.
|
|
|
|
|
|
|
|
#### ADDR=Socket Fdset Set(fd_set, Socket to Value BOOL)
|
|
|
|
|
|
|
|
Set or clear a socket bit in an fd_set.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* Address to that particular fd_set
|
|
|
|
* -1 if fd_set is out of range or socket is out of range.
|
|
|
|
|
|
|
|
#### RESULT=Socket Fdset Is Set(fd_set, Socket)
|
|
|
|
|
|
|
|
See if the particular socket remained after a Socket Select call.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* True or False if the socket is set or not
|
|
|
|
|
|
|
|
#### RESULT=Socket Select(Max Socket, Read fd_set, Write fd_set, Error fd_set, TimeoutMS)
|
|
|
|
|
|
|
|
Wait for the specified number of milliseconds. If any of the sockets
|
|
|
|
in any of the fd_sets become interesting during that time, stop
|
|
|
|
waiting, clear out the uninteresting sockets in the fd_sets, and return
|
|
|
|
how many sockets were left.
|
|
|
|
|
|
|
|
##### Returns
|
|
|
|
|
|
|
|
* 0 on timeout
|
|
|
|
* -1 on error
|
|
|
|
* # of interesting sockets on success
|