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New env var SOCAT_TRANSFER_WAIT: sleep before transfer loop

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This commit is contained in:
Gerhard Rieger 2023-06-11 22:04:25 +02:00
parent a8b2cb68d5
commit 41b5da75ac
4 changed files with 20 additions and 2 deletions
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5
CHANGES
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@ -1,4 +1,9 @@

Coding:
New Environment variable SOCAT_TRANSFER_WAIT that Socat sleep before
starting the data transfer loop. Useful, e.g., to accumulate multiple
packets in a receiving datagram socket before starting to process them.
####################### V 1.7.4.4:
Corrections:

2
VERSION
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@ -1 +1 @@
"1.7.4.4"
"1.7.4.4+"

10
doc/socat.yo
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@ -3652,8 +3652,16 @@ address format. If name resolution does not return a matching entry, the first
result (with differing IP version) is taken. With value 0, socat always selects
the first record and its IP version.
dit(bf(SOCAT_MAIN_WAIT) (input)) Specifies the time (seconds) to sleep the
main process on begin of main\(). Useful for debugging.
dit(bf(SOCAT_TRANSFER_WAIT) (input)) Specifies the time (seconds) to sleep the
process after opening addresses before entering the transfer loop. Useful for
debugging.
dit(bf(SOCAT_FORK_WAIT) (input)) Specifies the time (seconds) to sleep the
parent and child processes after successful NOEXPAND(fork()). Useful for debugging.
parent and child processes after successful NOEXPAND(fork()). Useful for
debugging.
dit(bf(SOCAT_VERSION) (output)) Socat sets this variable to its version string,
e.g. tt("1.7.0.0") for released versions or e.g. tt("1.6.0.1+envvar") for

5
socat.c
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@ -782,6 +782,7 @@ bool maywr2; /* sock2 can be written to, according to poll() */
and their options are set/applied
returns -1 on error or 0 on success */
int _socat(void) {
char *transferwaitstring;
struct pollfd fds[4],
*fd1in = &fds[0],
*fd1out = &fds[1],
@ -851,6 +852,10 @@ int _socat(void) {
}
total_timeout = socat_opts.total_timeout;
if (transferwaitstring = getenv("SOCAT_TRANSFER_WAIT")) {
Info1("before starting data transfer loop: sleeping %ds (env:SOCAT_TRANSFER_WAIT)", atoi(transferwaitstring));
sleep(atoi(transferwaitstring));
}
Notice4("starting data transfer loop with FDs [%d,%d] and [%d,%d]",
XIO_GETRDFD(sock1), XIO_GETWRFD(sock1),
XIO_GETRDFD(sock2), XIO_GETWRFD(sock2));