Specifies whether Ice uses IPv4. If num is a value greater than zero, IPv4 is enabled. If not specified, the default value is
1.
Specifies whether Ice uses IPv6. If num is a value greater than zero, IPv6 is enabled. If not specified, the default value is zero.
Specifies the size of the listen queue for each TCP or SSL server endpoint. If not defined, the default value for C++ programs uses the value of
SOMAXCONN if present, or
511 otherwise. In Java and .NET, the default value is 511.
These properties set the TCP receive and send buffer sizes to the specified value in bytes. The default value depends on the configuration of the local TCP stack. (A common default values is 65535 bytes.)
The OS may impose lower and upper limits on the receive and send buffer sizes or otherwise adjust the buffer sizes. If a limit is requested that is lower than the OS‑imposed minimum, the value is silently adjusted to the OS‑imposed minimum. If a limit is requested that is larger than the OS‑imposed maximum, the value is adjusted to the OS‑imposed maximum; in addition, Ice logs a warning showing the requested size and the adjusted size.
These properties set the UDP receive and send buffer sizes to the specified value in bytes. Ice messages larger than
num ‑ 28 bytes cause a
DatagramLimitException. The default value depends on the configuration of the local UDP stack. (Common default values are 65535 and 8192 bytes.)
The OS may impose lower and upper limits on the receive and send buffer sizes or otherwise adjust the buffer sizes. If a limit is requested that is lower than the OS‑imposed minimum, the value is silently adjusted to the OS‑imposed minimum. If a limit is requested that is larger than the OS‑imposed maximum, the value is adjusted to the OS‑imposed maximum; in addition, Ice logs a warning showing the requested size and the adjusted size.
Note that, on many operating systems, it is possible to set buffer sizes greater than 65535. Such settings do not change the hard limit of 65507 bytes for the payload of a UDP packet, but merely affect how much data can be buffered by the kernel.
