No worries about which list you subscribe to. Many on this list are happy to answer questions such as yours.
HttpClient uses commons-logging for its configuration. If you've configued commons-logging properly, the message can be made to "go away" as you indicated. Since you already generated a wire log, presumably you've seen the page for configuring logging. My suggestion would be to look at those instructions again, except change the logging level ("debug", "info", "warn", "error"). Where you see this:
System.setProperty("org.apache.commons.logging.simplelog.log.org.apache.commons.httpclient", "debug");
do your equivalent of this instead (I say "equivalent" on the off chance that you're using Log4J):
System.setProperty("org.apache.commons.logging.simplelog.log.org.apache.commons.httpclient", "error");
It strikes me personally that the "warning" in this particular context is probably excessive, and it should be logged as a "info" or "debug" message instead, but only in this particular case. If you look at the wire log you'll notice that the server does not respond with a "Content-Length" header. Rather, the length of the response is dictated by when the server closes the connection to the client. HttpClient is telling the truth with this warning that you see, but in this particular context, the server explicitly indicates that it will be closing the connection.
Let us know if you think the logging change above is not sufficient to your needs.
-Eric.
Brad Clarke wrote:
I have a piece of code that hits my LinkSys router to get the IP address and e-mail it if it has changed.
When using HTTPClient 2.0 RC1, it ran fine. When I upgraded to RC2, I get the message
"WARNING: Response content length is not known"
I've isolated the two calls that result in the warning. They are:
int status = client.executeMethod( get ); and get.getResponseBodyAsString();
Is there anything I can do to make this warning "go away"?
Here is the main procedure, to give you a better idea of what I'm doing:
String strHTML = new String(); String strIP = new String(); int statusCode = 0;
System.out.println("***** LSRouter start *****");
HttpClient client = new HttpClient();
client.getState().setCredentials("Linksys BEFSR41/BEFSR11/BEFSRU31", "192.168.1.1", new UsernamePasswordCredentials("user", "pass"));
GetMethod get = new GetMethod("http://192.168.1.1/Status.htm";); get.setDoAuthentication( true );
//client.setStrictMode(true); <--- no effect when enabled //get.setStrictMode(true); <--- no effect when enabled
// execute the GET int status = client.executeMethod( get );
// print the status and response statusCode = get.getStatusCode(); System.out.println("Status = " + statusCode);
strHTML = StripHTML(get.getResponseBodyAsString()); strIP = locateIP(strHTML);
System.out.println("\n" + strIP);
And the wire output:
2003/11/07 00:00:12:582 EST [DEBUG] HttpClient - -Java version: 1.4.2_02 2003/11/07 00:00:12:592 EST [DEBUG] HttpClient - -Java vendor: Sun Microsystems Inc. 2003/11/07 00:00:12:592 EST [DEBUG] HttpClient - -Java class path: D:\j2sdk1.4.2_02\jre\lib\rt.jar;D:\j2sdk1.4.2_02\lib\tools.jar;D:\Apache_Too ls\commons-httpclient-2.0-rc2\commons-httpclient-2.0-rc2.jar;D:\Apache_Tools \commons-httpclient-2.0-rc1\commons-httpclient-2.0-rc1.jar;D:\Apache_Tools\c ommons-logging-1.0.3\commons-logging.jar;H:\Development\Java\LSRouter\classe s 2003/11/07 00:00:12:592 EST [DEBUG] HttpClient - -Operating system name: Windows 2000 2003/11/07 00:00:12:592 EST [DEBUG] HttpClient - -Operating system architecture: x86 2003/11/07 00:00:12:592 EST [DEBUG] HttpClient - -Operating system version: 5.0
2003/11/07 00:00:13:844 EST [DEBUG] HttpClient - -SUN 1.42: SUN (DSA key/parameter generation; DSA signing; SHA-1, MD5 digests; SecureRandom; X.509 certificates; JKS keystore; PKIX CertPathValidator; PKIX CertPathBuilder; LDAP, Collection CertStores) 2003/11/07 00:00:13:844 EST [DEBUG] HttpClient - -SunJSSE 1.42: Sun JSSE provider(implements RSA Signatures, PKCS12, SunX509 key/trust factories, SSLv3, TLSv1) 2003/11/07 00:00:13:844 EST [DEBUG] HttpClient - -SunRsaSign 1.42: SUN's provider for RSA signatures 2003/11/07 00:00:13:854 EST [DEBUG] HttpClient - -SunJCE 1.42: SunJCE Provider (implements DES, Triple DES, AES, Blowfish, PBE, Diffie-Hellman, HMAC-MD5, HMAC-SHA1) 2003/11/07 00:00:13:884 EST [DEBUG] HttpClient - -SunJGSS 1.0: Sun (Kerberos v5) 2003/11/07 00:00:14:555 EST [DEBUG] HttpConnection - -HttpConnection.setSoTimeout(0) 2003/11/07 00:00:14:785 EST [DEBUG] HttpMethodBase - -Execute loop try 1 2003/11/07 00:00:14:795 EST [DEBUG] wire - ->> "GET /Status.htm HTTP/1.1[\r][\n]" 2003/11/07 00:00:14:826 EST [DEBUG] HttpMethodBase - -Adding Host request header 2003/11/07 00:00:14:996 EST [DEBUG] wire - ->> "User-Agent: Jakarta Commons-HttpClient/2.0rc2[\r][\n]" 2003/11/07 00:00:15:006 EST [DEBUG] wire - ->> "Host: 192.168.1.1[\r][\n]" 2003/11/07 00:00:15:006 EST [DEBUG] wire - ->> "[\r][\n]" 2003/11/07 00:00:15:026 EST [DEBUG] wire - -<< "HTTP/1.1 401 Authorization Required[\r][\n]" 2003/11/07 00:00:15:036 EST [DEBUG] wire - -<< "WWW-Authenticate: Basic realm="Linksys BEFSR41/BEFSR11/BEFSRU31"[\r][\n]" 2003/11/07 00:00:15:046 EST [DEBUG] wire - -<< "Content-type: text/html[\r][\n]" 2003/11/07 00:00:15:046 EST [DEBUG] wire - -<< "Expires: Thu, 13 Dec 1969 10:29:00 GMT[\r][\n]" 2003/11/07 00:00:15:046 EST [DEBUG] wire - -<< "Connection: close[\r][\n]"
2003/11/07 00:00:15:256 EST [DEBUG] wire - -<< "Pragma: no-cache[\r][\n]" 2003/11/07 00:00:15:256 EST [WARN] HttpMethodBase - -Response content length is not known 2003/11/07 00:00:15:256 EST [DEBUG] HttpMethodBase - -Force-close connection: true 2003/11/07 00:00:15:326 EST [DEBUG] HttpMethodBase - -Authorization required 2003/11/07 00:00:15:506 EST [DEBUG] HttpAuthenticator - -Authenticating with the 'Linksys BEFSR41/BEFSR11/BEFSRU31' authentication realm at 192.168.1.1 2003/11/07 00:00:15:577 EST [DEBUG] HttpMethodBase - -HttpMethodBase.execute(): Server demanded authentication credentials, will try again. 2003/11/07 00:00:15:587 EST [DEBUG] HttpMethodBase - -Should force-close connection. 2003/11/07 00:00:15:587 EST [DEBUG] HttpMethodBase - -Execute loop try 2 2003/11/07 00:00:15:587 EST [DEBUG] HttpMethodBase - -Opening the connection. 2003/11/07 00:00:15:657 EST [DEBUG] wire - ->> "GET /Status.htm HTTP/1.1[\r][\n]" 2003/11/07 00:00:15:657 EST [DEBUG] HttpMethodBase - -Request to add Host header ignored: header already added 2003/11/07 00:00:15:667 EST [DEBUG] wire - ->> "User-Agent: Jakarta Commons-HttpClient/2.0rc2[\r][\n]" 2003/11/07 00:00:15:667 EST [DEBUG] wire - ->> "Host: 192.168.1.1[\r][\n]" 2003/11/07 00:00:15:797 EST [DEBUG] wire - ->> "Authorization: Basic YWRtaW46amVzc2llOTQ=[\r][\n]" 2003/11/07 00:00:15:797 EST [DEBUG] wire - ->> "[\r][\n]" Status = 200 2003/11/07 00:00:15:897 EST [DEBUG] wire - -<< "HTTP/1.1 200 OK[\r][\n]" 2003/11/07 00:00:15:907 EST [DEBUG] wire - -<< "Content-type: text/html[\r][\n]" 2003/11/07 00:00:15:907 EST [DEBUG] wire - -<< "Expires: Thu, 13 Dec 1969 10:29:00 GMT[\r][\n]" 2003/11/07 00:00:15:907 EST [DEBUG] wire - -<< "Connection: close[\r][\n]" 2003/11/07 00:00:15:907 EST [DEBUG] wire - -<< "Pragma: no-cache[\r][\n]" 2003/11/07 00:00:15:907 EST [WARN] HttpMethodBase - -Response content length is not known 2003/11/07 00:00:15:907 EST [DEBUG] HttpMethodBase - -Force-close connection: true 2003/11/07 00:00:15:917 EST [DEBUG] HttpMethodBase - -Buffering response body 2003/11/07 00:00:16:288 EST [DEBUG] wire - -<< "<html><head><style>A:active;A:link;{text-decoration:none;}A:visited{text-de coration:none;}</style></head><script src=Gozila.js></script><script language=JavaScript>function pppoeAction(F,I){[0x9]F.pppoeAct.value = I;[0x9]F.submit();}function showAlert(){alert('');}function DHCPAct(F,I){[0x9]F.dhcpAction.value = I;[0x9]F.submit();}</script><body bgcolor=black><center><table border=0 cellspacing=0 cellpadding=0 width=700><tr><td colspan=2 background='tmp.gif' width=100% height=54><table border=0 cellspacing=3 width=700 height=54><tr><td colspan=11 height=22></td></tr><tr><td width=175 align=center height=23 background=''> </td><td align=center width=50 height=23 bgcolor=a5a4a1 background=''><a href='index.htm'><font face=verdana color=black size=1><b>Setup</a></td><td align=center width=50 height=23 bgcolor=a5a4a1 background=''><a href='Passwd.htm'><font face=verdana color=black size=1><b>Password</a></td><td align=center width=50 height=23 bgcolor=white background=''><a href='Status.htm'><font face=verdana color=f79400 s"
2003/11/07 00:00:16:578 EST [DEBUG] wire - -<< "ize=1><b>Status</a></td><td
align=center width=50 height=23 bgcolor=a5a4a1 background=''><a
href='DHCP.htm'><font face=verdana color=black size=1><b>DHCP</a></td><td
align=center width=50 height=23 bgcolor=a5a4a1 background=''><a
href='Log.htm'><font face=verdana color=black size=1><b>Log</a></td><td
align=center width=50 height=23 bgcolor=a5a4a1 background=''><a
href='Security.htm'><font face=verdana color=black
size=1><b>Security</a></td><td align=center width=50 height=23
bgcolor=a5a4a1 background=''><a href='Help.htm'><font face=verdana
color=black size=1><b>Help</a></td><td align=center height=23
background=''> </td><td align=center width=50 height=23 bgcolor=f79400
background=''><a href='Filters.htm'><font face=verdana color=black
size=1><b>Advanced</a></td><td width=30 align=center height=23
background=''> </td></tr></table><tr><th bgcolor=black width=23%
height=100><font size=5 face=verdana color=white>STATUS</th><th
bgcolor=white valign=top>[0x9]<table cellpadding=3 width=94%><tr><td><font
size=2 face=verdana color=black>This screen displays the router's current
status and settings. This information is
read-only.[0x9]</td></tr></table></th></tr><tr><th colspan=2><table border=1
bgcolor=black cellspacing=3 width=100%><tr><th><table border=0 bgcolor=white
cellspacing=0 width=100%><tr><th bgcolor=6666cc width=23% align=right><font
color=white face=Arial size=2>Host
Name: </th><td> <font face=verdana
size=2><b></td></tr><tr><th bgcolor=6666cc align=right><font color=white
face=Arial size=2>Firmware
Version: </th><td> <font face=verdana
size=2><b>1.45.6, Jun 24 2003</td></tr><tr><th bgcolor=6666cc
align=right><font color=white face=Arial
size=2><br>Login: </th><td><font face=verdana
size=2><b><br> Disable</td></tr><!--LAN head--><tr><th
bgcolor=6666cc align=right><font color=white face=Arial
size=2><br>LAN: </th><td><br> <font face=verdana
size=1>(MAC Address: 00-20-78-D6-E1-DC)</td></tr><tr><th
bgcolor=6666cc> </th><td><table width=90%><tr><td bgcolor=6666cc
width=47%> <font color=white face=verdana size=2>IP
Address:</td><td><font face=verdana size=2>192.168.1.1</td></tr><tr><td
bgcolor=6666cc> <font color=white face=verdana size=2>Subnet
Mask:</td><td><font face=verdana size=2>255.255.255.0</td></tr><tr><td
bgcolor=6666cc> <font color=white face=verdana size=2>DHCP
server:</td><td><font face=verdana
size=2>Disabled</td></tr></table></td></tr><!--LAN tail--><!--WAN
head--><tr><th bgcolor=6666cc align=right><font color=white face=Arial
size=2><br>WAN: </th><td><br> <font face=verdana
size=1>(MAC Address: 00-60-67-62-52-0D)</td></tr><tr><th
bgcolor=6666cc> </th><td><table width=90%><tr><td bgcolor=6666cc
width=47%> <font color=white face=verdana size=2>IP
Address:</td><td><font face=verdana size=2>24.43.14.227</td></tr><tr><td
bgcolor=6666cc> <font color=white face=verdana size=2>Subnet
Mask:</td><td><font face=verdana size=2>255.255.252.0</td></tr><tr><td
bgcolor=6666cc> <font color=white face=verdana size=2>Default
Gateway:</td><td><font face=verdana size=2>24.43.12.1</td></tr><tr><td
bgcolor=6666cc> <font color=white face=verdana
size=2>DNS:</td><td><font face=verdana
size=2>24.153.22.195<br>24.153.23.66<br>0.0.0.0</td></tr><tr><td
bgcolor=6666cc> <font color=white face=verdana size=2>DHCP
Remaining Time:</td><td><font face=verdana size=2> 3 days
19:02:36</td></tr></table></td></tr><!--WAN tail--><tr><th
bgcolor=6666cc> </th><td> <form method=get action=Gozila.cgi>
<input type=hidden name=dhcpAction><input type=button value=' DHCP
Release ' onClick=DHCPAct(this.form,0)> <input type=button value=' DHCP
Renew ' onClick=DHCPAct(this.form,1)> </form><form> </form><p>
</td></tr></table></th></tr></table></th></tr></table></center></body></html
"
2003/11/07 00:00:16:668 EST [DEBUG] HttpMethodBase - -Should force-close connection. 2003/11/07 00:00:16:698 EST [DEBUG] HttpMethodBase - -Default charset used: ISO-8859-1
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