10000 Document the default buffer sizes by bmk · Pull Request #9855 · erlang/otp · GitHub
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Document the default buffer sizes #9855

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May 22, 2025
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Document the default buffer sizes #9855

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8 changes: 8 additions & 0 deletions lib/kernel/src/inet.erl
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Original file line number Diff line number Diff line change
Expand Up @@ -998,6 +998,9 @@ The following options are available:
single recv call. If you are using higher than normal MTU consider setting
buffer higher.
For SCTP, defaults to 65536.
For TCP and UDP, defaults to 1460.
- **`{delay_send, Boolean}`** - Normally, when an Erlang process sends to a
socket, the driver tries to send the data immediately. If that fails, the
driver uses any means available to queue up the message to be sent whenever
Expand Down Expand Up @@ -1336,6 +1339,9 @@ The following options are available:
You are encouraged to use `getopts/2` to retrieve the size
set by your operating system.
For SCTP, defaults to 1024.
For UDP, defaults to 8K.
- **`{recvtclass, Boolean}`** [](){: #option-recvtclass } -
If set to `true` activates returning the received `TCLASS` value
on platforms that implements the protocol `IPPROTO_IPV6` option
Expand Down Expand Up @@ -1493,6 +1499,8 @@ The following options are available:
You are encouraged to use `getopts/2`, to retrieve the size
set by your operating system.
For SCTP, defaults to 65536.
- **`{priority, Integer}`** - Sets the `SO_PRIORITY` socket level option on
platforms where this is implemented. The behavior and allowed range varies
between different systems. The option is ignored on platforms where it is not
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