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Re: minimum write size of SOCK_STREAM?
On 2025年10月30日, Andrew Cagney wrote:
I've what I thought was some stock (if somewhat old) code that used a
SOCK_STREAM for communication between a daemon and its control
program.
What domain? AF_LOCAL or AF_INET{,6}?
Because the messages were all below the socket's buffer size (8K
according to getsockopt()), my understanding is partial reads
shouldn't happen.
With SOCK_STREAM, partial reads can always happen. If you want whole-packet
reads (< MTU size) you'll have to use SOCK_DGRAM or SOCK_SEQPACKET; or send
the message size too, so that the server can loop until it gets the whole
packet.
Let's see your code.
-RVP
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