From: Bigmac Turdsplash <i8igmac@...>
Date: 2012-01-09T07:04:37+09:00
Subject: Http proxy, string chomp error is nil?

im building a proxy, im having a problem with processing the get request
i recive from the client.

the client will send the proxy the get request and then the proxy sends
out this same request to the servers...

so, when i recieve a request from the client, ill take this header and
strip out the Host: like this

header="GET / HTTP/1.1
Host: www.google.com
User-Agent: Mozilla/5.0 (Windows NT 5.1Firefox/8.0.1
Accept: text/html,application/xhtml+xml
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Connection: keep-alive"

host = header.to_a[1].chomp[6..-1] => "www.google.com"

this works every time in irb testing, but is inconsistent when my script
is running, the proxy works 90% of the time. when www.yahoo.com is
requested the script crashes with Host nil error but when yahoo.com is
request the script works fine...



GET / HTTP/1.1
Host: www.yahoo.com
User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:8.0.1) Gecko/20100101
Firefox/8.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Connection: keep-alive
Cookie:
B=8tefbfp77l57r&b=4&d=YTsZzxppYELpjioeXJu1kVafe.sroIDDz5owJg--&s=db&i=AhdUsAlvafAjzjZtkcC1;
F=a=.fI9HRcMvTab.ukb24sGFXCNVEqUnV6kET4hAn3W1si7nfsvB8h_xSSa5wZoY8sju.Bj7s4-&b=e70h;
Y=v=1&n=35d31ktflt3pr&p=;
fpc=d=dZMgXDOItm2f.klxz2sfDYNxkFevm_0AxEXHNXANYwDgrN_qJwqGHO_HqDkoHNxq0pvLiqEAAyWQSqTRNpIu3OGRXqcZJHhFM1qhL2c.5g44dNEYfgRPoOqvbhzgmVRNu3ls8RgDrnajHWeNjMlMjgJL0hKAYP2NgN3WGc2sXKDveE3.iRyd3Rdj2.92W0Aa5JXw_Ak-&v=2;
CH=AgIG0TQcTwn4YAAbrGAAEuBgAA2HYAAwnWAAKZhgAD5KYAAo5DAIGeMwACbxYAAZpGAAIZ4=;
CRZY0=t=bn=0;
fpt=d=vfO8FVTXecx5JjCjNA4wAmkmvxmpDc6Yi4soM9nzzwrVETeqMnlSv6.mPz7ZxDZIIZMRRoNng458dpROFMiVMgMhe75Oa1KxF_mr6SIty4chG2kmCka7ic5aoYek6kpahiH8n1fEGX7b..nLsoVDXFsRRXInysWPDDdgKTz0rUtcHNme6jenB.PEFmRe1LG0FBW_azvS7kZlHCkaFY9KYAEQuMf9ghHzSMNKqR0x4jj3UYZUpo1_1Jl399Y3jdPaE1.3AOlOp_OLiEL4MGlFxJ4I6ngNa6W2rz90_4iYAcda3YxBKMTBIOA_F.XZfqF0HKnikNB3pS1ealSjTWduAxbpcTK93kZkCWFMjD.lqB4njH2rQrxGd._RE0BsVmArPDhYGaGrW4DRH4y94cyZT6zRQ.QONbxHkBT0llvWOWxh5HeOimkRCWk7d00vOGy6ZWaV4UW3ODHRcXJg8ZBqm9AOsCDTQdxtZtUqgR9IQ8mErUUVij1o11BejZKdyfikXQpPePvVdL0j&v=1;
fpc_s=d=QrlkhWXXLB2gA5NNdxa7E0M74Un3.BAO4CVRxPC0gLkU4meLdhn7rhveTTfVD21HxzGEU1hlZ2www.yahoo.com
wE5Lm4lUU96Ukeh_ROc96RcvX9nltXX0NKvDG659Jmpojt1Ndso04VmHdVXa82tVBNpkIBfzYouP5EvvIGbRw72cEYbLAy3WCpT_8qwOdM..ESYE_fPs8aXRvKvxL3rMrHc0XP8BGjOOmal0KCW9BglRpbBOX9MD5IGqIw4ZKFq5HSQssHooX30KaWjFmBd9ot.dYOaifjWL8R5i3q4aqQK4OLvIXKqPxrUujQmPCSrbbdQeU-&v=2;
HP=0

host = header.to_a[1].chomp[6..-1] => nil

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