If you use sysread you must expect partial reads -- see the fine documentation. (Update: sorry, the documentation doesn't tell you this... I felt sure it did... I feel sure it should. Update 2: I am grateful to brother ikegami for pointing out ( see below) the significance of the word Attempts, which I am ashamed to admit I had missed.)

You could try plain read, which is less "clever".

Or you wrap a loop around the sysread, eg:

  my $rc ;
  my $buff = '' ;
  do { $rc = sysread(FH, $buff, 5000000, length($buff)) ; } while ($rc
+) ;

[download]
which will suck away at FH until it hits eof ($rc == 0) or hits some error (!defined($rc)). (Noting that if the FH is set to be non-blocking you can get "soft" EAGAIN error(s)...)

In reply to Re: sysread and syswrite in tcp sockets by gone2015
in thread sysread and syswrite in tcp sockets by rustybar

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