RE: 400 Bad Request - Success!
Hi Tim, Setting the Web option: " Web session enable IP address validation" to disabled Seemed to do the trick! Many, many thanks! Randy Engle -Original Message- From: 4D_Tech <4d_tech-boun...@lists.4d.com> On Behalf Of Timothy Penner via 4D_Tech Sent: Friday, June 14, 2019 3:25 PM To: 4D iNug Technical <4d_tech@lists.4d.com> Cc: Timothy Penner ; Michael McCall ; Randy Engle Subject: RE: 400 Bad Request Is it possible that the IP address of the client(ipad) is changing? The Web Session Management documentation states: "The 4D HTTP server records the IP that started a session. If a Web client located at a different IP address tries to access an existing session, the HTTP 400 error is returned to the client." This can happen when switching between Mobile networks and Wifi (like if an iphone user walks into Wifi reception and continues using the website after their phone automatically switches networks). If needed, this behavior can be changed using the "Web session enable IP address validation" selector of WEB SET OPTION so that the IP Address is not validated. -Tim -Original Message- From: 4D_Tech <4d_tech-boun...@lists.4d.com> On Behalf Of Michael McCall via 4D_Tech Sent: Friday, June 14, 2019 1:34 PM To: 4D iNug Technical <4d_tech@lists.4d.com> Cc: Michael McCall Subject: RE: 400 Bad Request We have had one client who primarily uses iPads who has reported a similar issue from time to time over the past few years. We've never been able to reproduce it since they have around 200 iPads at times - which we don't - and they also have done some customizations which make it hard to isolate the problem. If anyone does have suggestions as to possible things to check, I'd also be curious. ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com ** ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com ** ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
RE: 400 Bad Request
Hi Tim, Thanks for the info Re "Web session enable IP address validation" I will try this. FYI We are using "CloudFlare" to prevent DDOS attacks. I'm looking at the logweb.txt. I see pings from Cloudflare with a 400 response Typically followed by a another ping with a 302 response Don't know what to make of this Randy Engle -Original Message- From: 4D_Tech <4d_tech-boun...@lists.4d.com> On Behalf Of Timothy Penner via 4D_Tech Sent: Friday, June 14, 2019 3:25 PM To: 4D iNug Technical <4d_tech@lists.4d.com> Cc: Timothy Penner ; Michael McCall ; Randy Engle Subject: RE: 400 Bad Request Is it possible that the IP address of the client(ipad) is changing? The Web Session Management documentation states: "The 4D HTTP server records the IP that started a session. If a Web client located at a different IP address tries to access an existing session, the HTTP 400 error is returned to the client." This can happen when switching between Mobile networks and Wifi (like if an iphone user walks into Wifi reception and continues using the website after their phone automatically switches networks). If needed, this behavior can be changed using the "Web session enable IP address validation" selector of WEB SET OPTION so that the IP Address is not validated. -Tim -Original Message- From: 4D_Tech <4d_tech-boun...@lists.4d.com> On Behalf Of Michael McCall via 4D_Tech Sent: Friday, June 14, 2019 1:34 PM To: 4D iNug Technical <4d_tech@lists.4d.com> Cc: Michael McCall Subject: RE: 400 Bad Request We have had one client who primarily uses iPads who has reported a similar issue from time to time over the past few years. We've never been able to reproduce it since they have around 200 iPads at times - which we don't - and they also have done some customizations which make it hard to isolate the problem. If anyone does have suggestions as to possible things to check, I'd also be curious. ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com ** ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com ** ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
RE: 400 Bad Request
Is it possible that the IP address of the client(ipad) is changing? The Web Session Management documentation states: "The 4D HTTP server records the IP that started a session. If a Web client located at a different IP address tries to access an existing session, the HTTP 400 error is returned to the client." This can happen when switching between Mobile networks and Wifi (like if an iphone user walks into Wifi reception and continues using the website after their phone automatically switches networks). If needed, this behavior can be changed using the "Web session enable IP address validation" selector of WEB SET OPTION so that the IP Address is not validated. -Tim -Original Message- From: 4D_Tech <4d_tech-boun...@lists.4d.com> On Behalf Of Michael McCall via 4D_Tech Sent: Friday, June 14, 2019 1:34 PM To: 4D iNug Technical <4d_tech@lists.4d.com> Cc: Michael McCall Subject: RE: 400 Bad Request We have had one client who primarily uses iPads who has reported a similar issue from time to time over the past few years. We've never been able to reproduce it since they have around 200 iPads at times - which we don't - and they also have done some customizations which make it hard to isolate the problem. If anyone does have suggestions as to possible things to check, I'd also be curious. ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com ** ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
RE: 400 Bad Request
We have had one client who primarily uses iPads who has reported a similar issue from time to time over the past few years. We've never been able to reproduce it since they have around 200 iPads at times - which we don't - and they also have done some customizations which make it hard to isolate the problem. If anyone does have suggestions as to possible things to check, I'd also be curious. ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
RE: 400 Bad Request
Hi Jacques, (re your post from 2017) We are having this same problem on our web pages. If is particularly bad on iPhones and iPads. Intermittent on Windows Chrome Did you find any way to resolve it? Much appreciated Randy Engle XC2 Software - XC2LIVE! -Original Message- From: 4D_Tech <4d_tech-boun...@lists.4d.com> On Behalf Of Jacques Chatenay via 4D_Tech Sent: Monday, September 18, 2017 6:43 PM To: 4D iNug Technical <4d_tech@lists.4d.com> Cc: Jacques Chatenay Subject: 400 Bad Request I have started receiving 400 bad request errors on a website's served by 4D the errors occur using chrome 60.0.3112.116 on android 8.0.0 using firefox on the same device has no problems using chrome 60.0.3112.116 on android 6.0.1 device dose not have any problem I have had reports of this problem on Apple devices however I do not have an apple device to test on I have no problems on windows computers accessing the sites with any browser. Problem seems to be isolated to chrome 60.0.3112.116 on android 8.0.0 and likely apple devices One site that has the problem has http://mcknight-law.com The database is running on v14 R5 I have tested on 16 R3 with the same results Any help would be greatly appreciated J Chatenay Aware Data Services ** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com ** ** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **
