SysSockGetOptionΒΆ
This function of type BOOL calls the function getsockoptof the operating system, in order to get the value of a particular socket option.
In case of successful operation the function will return TRUE, otherwise FALSE.
| Variable | Data type | Description |
|---|---|---|
| diSocket | DINT | Descriptor of the socket, returned by SysSockCreate (corresponding parameter e.g. in Win32: s) |
| diLevel | DINT | protocol specific level; possible values: SOL_SOCKET, IPPROTO_TCP (corresponding parameter e.g. in Win32: level) |
| diOption | DINT | Name of the option, for which you want to get the current value; see function SysSockSetOption for a list of the options (corresponding parameter e.g. in Win32: optname) |
| diOptionValue | DWORD | Pointer to the variable, to which the current value of the option should be written (corresponding parameter e.g. in Win32: optval) |
| diOptionLength | DWORD | Pointer to the size of the variable, to which the current value of the option should be written (corresponding parameter e.g. in Win32: optlen) |
Note
Note for operating system VxWorks: There are systems on which a multiple call of SysSockGetOption only at the first call returns a reasonable option value. This is especially true if an error has occurred just before.
Reason: The special behaviour of getsockopt under VxWorks.