Bug 493129

Summary: netcat uses inefficient socket read sizes
Product: [Fedora] Fedora Reporter: Aron Griffis <aron.griffis>
Component: ncAssignee: Jan Zeleny <jzeleny>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: rawhideCC: jzeleny, rvokal
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OS: Linux   
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Last Closed: 2009-04-10 13:16:05 UTC Type: ---
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double read sizes to accomodate full-size packets none

Description Aron Griffis 2009-03-31 18:08:05 UTC 
Created attachment 337367 [details]
double read sizes to accomodate full-size packets

Description of problem:
netcat uses read sizes of 1024 for standard packets and 8192 for jumbos.  This doesn't make sense because standard packets are ~1518 bytes and jumbos typically max out ~9018, so full-size packets will result in twice the necessary read syscalls.

Version-Release number of selected component (if applicable):
nc-1.84-18.fc11

Additional info:
This bug is also present upstream at 
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/nc/netcat.c?rev=1.92;content-type=text%2Fplain
Comment 1 Jan Zeleny 2009-04-10 13:16:05 UTC 
Patch has been included in rawhide package, closing this bug.