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Posted to users@tomcat.apache.org by vicky b <vi...@gmail.com> on 2013/11/11 16:02:04 UTC
Http url connection : server returned http response code 400
HI All,
I am getting server returned http response code 400 when i run below
code from my tomcat however it works fine when i run it in WAS whch has
proxy server settings.
URL url = new URL(reqUrl);
HttpURLConnection con = (HttpURLConnection)url.openConnection();
con.setDoOutput(true);
con.setRequestMethod(request.getMethod());
if(request.getContentType() != null) {
con.setRequestProperty("Content-Type", request.getContentType());
}
con.setRequestProperty("Referer", request.getHeader("Referer"));
int clength = request.getContentLength();
if(clength > 0) {
con.setDoInput(true);
InputStream istream = request.getInputStream();
OutputStream os = con.getOutputStream();
final int length = 5000;
byte[] bytes = new byte[length];
int bytesRead = 0;
while ((bytesRead = istream.read(bytes, 0, length)) > 0) {
os.write(bytes, 0, bytesRead);
}
}
else {
con.setRequestMethod("GET");
}
out.clear();
out = pageContext.pushBody();
OutputStream ostream = response.getOutputStream();
System.out.println(" finished getOUTputsteram");
response.setContentType(con.getContentType());
InputStream in = con.getInputStream();
final int length = 5000;
byte[] bytes = new byte[length];
int bytesRead = 0;
while ((bytesRead = in.read(bytes, 0, length)) > 0) {
ostream.write(bytes, 0, bytesRead);
}
--
*Thanks & Regards Vickyb*
Re: Http url connection : server returned http response code 400
Posted by vicky b <vi...@gmail.com>.
THanks you, can you please let me know what optimization I have to make.
con.setRequestProperty("Referer", request.getHeader("Referer"));
was the issue , since it was being set to null
On Mon, Nov 11, 2013 at 7:38 AM, Christopher Schultz <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Vicky,
>
> On 11/11/13, 10:02 AM, vicky b wrote:
> > I am getting server returned http response code 400 when i run
> > below code from my tomcat however it works fine when i run it in
> > WAS whch has proxy server settings.
> >
> > URL url = new URL(reqUrl); HttpURLConnection con =
> > (HttpURLConnection)url.openConnection(); con.setDoOutput(true);
> > con.setRequestMethod(request.getMethod());
> > if(request.getContentType() != null) {
> > con.setRequestProperty("Content-Type", request.getContentType());
> > } con.setRequestProperty("Referer", request.getHeader("Referer"));
> > int clength = request.getContentLength(); if(clength > 0) {
> > con.setDoInput(true); InputStream istream =
> > request.getInputStream(); OutputStream os = con.getOutputStream();
> > final int length = 5000; byte[] bytes = new byte[length]; int
> > bytesRead = 0; while ((bytesRead = istream.read(bytes, 0, length))
> > > 0) { os.write(bytes, 0, bytesRead); } } else {
> > con.setRequestMethod("GET"); } out.clear(); out =
> > pageContext.pushBody(); OutputStream ostream =
> > response.getOutputStream(); System.out.println(" finished
> > getOUTputsteram"); response.setContentType(con.getContentType());
> > InputStream in = con.getInputStream(); final int length = 5000;
> > byte[] bytes = new byte[length]; int bytesRead = 0; while
> > ((bytesRead = in.read(bytes, 0, length)) > 0) {
> > ostream.write(bytes, 0, bytesRead); }
>
> So you have a quick-and-dirty proxy servlet, right?
>
> There are a number of optimizations, etc that you should probably
> make, but none of the above code uses any Tomcat code (other than
> fetching information from the incoming request, which presumably works
> correctly).
>
> It looks like you are getting a 400 from the server your code is
> contacting. Have you looked at the request that is actually being sent?
>
> Under what conditions do you get a 400 response? I see you are
> unconditionally setting con.setDoOutput(true) even if you don't intend
> to send any data. You conditionally call setDoInput which doens't make
> a great deal of sense. I think you have these two calls reversed in
> your head.
>
> - -chris
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--
*Thanks & Regards Vickyb*
Re: Http url connection : server returned http response code 400
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Vicky,
On 11/11/13, 10:02 AM, vicky b wrote:
> I am getting server returned http response code 400 when i run
> below code from my tomcat however it works fine when i run it in
> WAS whch has proxy server settings.
>
> URL url = new URL(reqUrl); HttpURLConnection con =
> (HttpURLConnection)url.openConnection(); con.setDoOutput(true);
> con.setRequestMethod(request.getMethod());
> if(request.getContentType() != null) {
> con.setRequestProperty("Content-Type", request.getContentType());
> } con.setRequestProperty("Referer", request.getHeader("Referer"));
> int clength = request.getContentLength(); if(clength > 0) {
> con.setDoInput(true); InputStream istream =
> request.getInputStream(); OutputStream os = con.getOutputStream();
> final int length = 5000; byte[] bytes = new byte[length]; int
> bytesRead = 0; while ((bytesRead = istream.read(bytes, 0, length))
> > 0) { os.write(bytes, 0, bytesRead); } } else {
> con.setRequestMethod("GET"); } out.clear(); out =
> pageContext.pushBody(); OutputStream ostream =
> response.getOutputStream(); System.out.println(" finished
> getOUTputsteram"); response.setContentType(con.getContentType());
> InputStream in = con.getInputStream(); final int length = 5000;
> byte[] bytes = new byte[length]; int bytesRead = 0; while
> ((bytesRead = in.read(bytes, 0, length)) > 0) {
> ostream.write(bytes, 0, bytesRead); }
So you have a quick-and-dirty proxy servlet, right?
There are a number of optimizations, etc that you should probably
make, but none of the above code uses any Tomcat code (other than
fetching information from the incoming request, which presumably works
correctly).
It looks like you are getting a 400 from the server your code is
contacting. Have you looked at the request that is actually being sent?
Under what conditions do you get a 400 response? I see you are
unconditionally setting con.setDoOutput(true) even if you don't intend
to send any data. You conditionally call setDoInput which doens't make
a great deal of sense. I think you have these two calls reversed in
your head.
- -chris
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.15 (Darwin)
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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=Zxr5
-----END PGP SIGNATURE-----
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