-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Didier,
On 6/4/14, 11:30 AM, DDU DUQUENNOY Didier wrote: > I think I found a problem in the way Tomcat parses the POST Http > Request. It might be related to issues n°40860, 31523 and 42347 > submitted to bugzilla <https://issues.apache.org/bugzilla>. > > I am running on a JBoss 4.0.4 GA server on a windows platform. I > know it uses a 5.5.x tomcat, but I don't know exactly which > version. Tomcat 5.5.x is no longer supported. We don't support JBoss, here, either. You'll have to get support from Red Hat at this point, or upgrade to a version of Tomcat that is supported. > Symptoms : When I submit a POST request, sometimes one parameter > get lost. I can tell using Eclipse's TCP/IP proxy that the value > was submitted in the request. Without knowing what version of 5.5.x you are using, nobody is going to be able to tell you if a) there is a bug and b) if it was fixed in a version of Tomcat later than the one you are running. I can tell you pretty confidently that Tomcat does not lose request parameters, even old unsupported versions. ;) > Analysis: The POST request looks like that and is 15kB long: << > -----------------------------7de35e1c190e9e Content-Disposition: > form-data; name="autoScroll" > > 0,0 -----------------------------7de35e1c190e9e > Content-Disposition: form-data; name="principal:arbre::focused" > > false -----------------------------7de35e1c190e9e > Content-Disposition: form-data; > name="principal:arbre::expandedNodes" It's worth pointing-out that Tomcat did not directly handle multipart requests until version 7.0.x. If you are having problems with multipart requests, the problem is likely with either /your/ (of JBoss's) multipart library or your own code. (Oddly, Tomcat does have the package-renamed classes from commons-http-upload available in the Tomcat 6 source...) > Using remote debugging, I found that a MultipartStream object > analyses the request using a 4KB buffer; this buffer is fed by a > 8kB buffer used by a ByteChunk object. The pattern > "-----------------------------7de35e1c190e9e" is called 'boundary'. > and is repeated for each field. I noted that the hex part of the > boundary may not be the same length from one POST to another, I > think that is why the problem does not always occur. > > when MultipartStream arrives at the end of its buffer and there is > not enough bytes left to read the next boundary, it moves the few > unread bytes to the beginning of the buffer, then loads the next > chunk of data from the ByteChunk object (see > MultipartStream$ItemInputStream.makeAvailable()) That class does not exist in Tomcat prior to Tomcat 6, and in Tomcat 6 does not have the "makeAvailable" method. In Tomcat 7, makeAvailable appears. I suspect you are using commons-http-upload, and probably a fairly old version. If this ever was a problem with commons-http-upload, I'm sure it's been fixed. In any case, you are going to have to upgrade at least commons-http-upload. I would recommend upgrading just about every component you currently have, as you are likely to be very out of date. Security patches, performance improvements, bug fixes, etc. are all available between your version and the current. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJTj7StAAoJEBzwKT+lPKRYrmQP/iDgbuW2j0UxCn6IM2Skra4z PUIj1O4tBMz4Q668sjxboJHpMHYDPsW8uUtChIFH2UbyxQ8yonqjhugybPE3jBf3 jwmw+tk+x8FbW+tiGeQl/KxPdvgo5l7i51Hb7/SA8Wzhu82gGm9J3zjo5g7FhMje 8H8T9qMpSijUJO1QLfnNiGuXeLlDVOAL35lTihW+rTiuFjn+hy/rqwM01lGMyw0n hrh8d9ZHFZGorDBoIFnPc+Jbo+qhI+wZB/tgPgYFQrk1MTBgmvbiJ0Zd4wmV7mGj fOMCQF3Xbf8iJvkQBVq8C+17Yr/AHFH96t6zDCWfPLdwWIUtRVOA86EYvmxqd4cb lWBdPvf5o3+MCYHp4nX/JSMgD7oAKwZYsi0rTSj9MadWUHSgkZT31zD8VCQET5WQ M7BuAI8P3rsMvopCEF+eLLgjc5wOvqoW/egrldkenxeNA1EN7g8mqiFWIkDXcoh4 +mNciaag3fk0XmkmLfl9MGrGc+/81aQBoa2R1ge0QIZFGEhUnrLrVESCPwyZGfvB Wwpdy86KUTIJD1nwW5v4ghmDhVdYs3r3NYbcBsGv927UXSnsaFsoWpAzz7xYJNn7 JUG23HcPgG7Ff8jO1osE9AjLyua9hJKgxVM9vzwj1ctCS1TlZ4EAlEoufnJY5OOF 7AEjGq+cRV57F04cdGw2 =vxm6 -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
