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Date:	Sat, 13 Jun 2009 19:53:10 -0700 (PDT)
From:	Xiaoqiang Zheng <zh_xq AT yahoo DOT com>
Subject:	Re: [BUG 1.7 getopt_long() and recv()] has problem for tftp-hpa-5.0 on cygwin-1.7/win2003
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to make the 2 BUGs more clear:

* in the while loop of processing options with '-' using getopt_long():  

$ tftpd/tftpd -u SYSTEM -L -vvvv -p -c -s /var/log

1. it seems the '-<x> <value>'(-u SYSTEM) argument pairs that pass the second argument as value have the value lost and the variable get null value. the '-<x>'(-L -p -c -s; -vvvv is a special one) type arguments that set some flag seems work well.

2. the value of 'optind'  is always 1 in each loop(-vvvv is a special one?). but it would have be increased by 1 in each loop.  after all the '-<x>' and '-<x> <value>' arguments being processed, its value. 

3. because the value of optind not increased 1 for each loop, so that the arguments '/var/log' at the end that pass value(s) get processed in a wrong way as the optind is used for 'argv[optind]' to set value to some variable(s).


==================
$ tftpd/tftpd -u SYSTEM -L -vvvv -p -c -s /var/log
cygwin: user=(null)  optarg=(null)  optind=1
cygwin: standalone=1  optind=1
cygwin: nodaemon=1  optind=1
cygwin: verbosity=1  optind=1
cygwin: verbosity=2  optind=1
cygwin: verbosity=3  optind=1
cygwin: verbosity=4  optind=1
cygwin: uniperm=1  optind=1
cygwin: cancreate=1  optind=1
cygwin: secure=1  optind=1
cygwin: dirs[0]=-u  argv[1]=-u
cygwin: dirs[1]=SYSTEM  argv[2]=SYSTEM
cygwin: dirs[2]=-L  argv[3]=-L
cygwin: dirs[3]=-vvvv  argv[4]=-vvvv
cygwin: dirs[4]=-p  argv[5]=-p
cygwin: dirs[5]=-c  argv[6]=-c
cygwin: dirs[6]=-s  argv[7]=-s
cygwin: dirs[7]=/var/log  argv[8]=/var/log
==================
$ tftpd/tftpd --user SYSTEM --foreground --verbose --verbose --verbose --verbos
e --permissive --create --secure /var/log
cygwin: user=(null)  optarg=(null)  optind=1
cygwin: standalone=1  optind=1
cygwin: nodaemon=1  optind=1
cygwin: verbosity=1  optind=1
cygwin: verbosity=2  optind=1
cygwin: verbosity=3  optind=1
cygwin: verbosity=4  optind=1
cygwin: uniperm=1  optind=1
cygwin: cancreate=1  optind=1
cygwin: secure=1  optind=1
cygwin: dirs[0]=--user  argv[1]=--user
cygwin: dirs[1]=SYSTEM  argv[2]=SYSTEM
cygwin: dirs[2]=--foreground  argv[3]=--foreground
cygwin: dirs[3]=--verbose  argv[4]=--verbose
cygwin: dirs[4]=--verbose  argv[5]=--verbose
cygwin: dirs[5]=--verbose  argv[6]=--verbose
cygwin: dirs[6]=--verbose  argv[7]=--verbose
cygwin: dirs[7]=--permissive  argv[8]=--permissive
cygwin: dirs[8]=--create  argv[9]=--create
cygwin: dirs[9]=--secure  argv[10]=--secure
cygwin: dirs[10]=/var/log  argv[11]=/var/log
==================



* recv() returns -1 with error 14 when it read acknolege packet from the socket, the normal return value is 4.

==================
cygwin: recv() rv = -1  errno=14
cygwin: recv() rv = -1  errno=14
==================



      

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