Error 502 Iis 7
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502 Bad Gateway Fix
Reply ahmedilyas 43 Posts 502 error Sep 09, 2013 06:48 AM|ahmedilyas|LINK Hi. I am not sure if this is the right place to post this. I created a web farm for a
502 Bad Gateway Nginx Means
test environment with 2 secondary servers and 1 primary. All works fine. using WS2008R2 + SP1 and IIS 7.5 The web farm works great but then I get this error sometimes and thereafter fails to work: 502 - Web server received an invalid response while acting as a gateway or proxy server. There is a problem with the page you are looking for, and 502 proxy error apache it cannot be displayed. When the Web server (while acting as a gateway or proxy) contacted the upstream content server, it received an invalid response from the content server. I am using the ARR module in IIS and set to round robin to illustrate that the website hits different servers. what am I missing? C# MVP Reply Angie xu - M... 670 Posts Microsoft Re: 502 error Sep 10, 2013 02:55 AM|Angie xu - MSFT|LINK Hi ahmedilyas 502 - Web server received an invalid response while acting as a gateway or proxy. IIS 7.0, IIS 7.5, and IIS 8.0 define the following HTTP status codes that indicate a more specific cause of a 502 error: ◦502.1 - CGI application timeout. Solution: http://support.microsoft.com/kb/942059/en-us ◦502.2 - Bad gateway: Premature Exit. Solution: http://support.microsoft.com/kb/942057 ◦502.3 - Bad Gateway: Forwarder Connection Error (ARR). ◦502.4 - Bad Gateway: No Server (ARR). Regards Angie xu MSDN Community Support Please remember to "Mark as Answer" the responses that resolved your issue. ‹ Previous Thread|Next Thread › This site is managed for Microsoft by Neudesic, LLC. | © 2016 Microsoft. All rights reserved. Privacy Statement Terms of Use Co
of the errors you might see is 502.3 Bad Gateway. The 502.3 means while acting as a proxy ARR was unable to complete the request to the
504 Bad Gateway
upstream server and subsequently send a response back to the client. This 502 bad gateway iphone can happen for multiple reasons including , failure to connect to the server , no response from the 502 bad gateway linksys server, or server took too long to respond (time out). For the purposes of this post we are going to look at a timeout error and the data that can https://forums.iis.net/t/1201412.aspx?502+error be gathered to help isolate the cause. If you are looking at this post then you probably have already seen this error or something similar. This is shown in the browser when detailed errors are enabled in IIS. Another way to identify the source of the 502.3 is with Failed Request Tracing logs in IIS configured to capture Status code 502. https://blogs.iis.net/richma/502-3-bad-gateway-the-operation-timed-out-with-iis-application-request-routing-arr From the message the key details are the ErrorCode which you can use to map to to the Winhttp error message, which in this case is ERROR_WINHTTP_TIMEOUT ( Reference WinHttp Error Codes). You will also see in the next line that this is translated to “The operation timed out”. Note that both the 0x80072ee2 and 2147954402 map to the same error ERROR_WINHTTP_TIMEOUT. Now that we know its a timeout we need to determine what type of timeout occurred. Here is a list of the timeouts that can occur in Winhttp ( which if you haven't guessed already is what ARR uses to proxy requests) ResolveTimeout : This occurs if name resolution takes longer than the specified timeout period. ConnectTimeout : This occurs if it takes longer than the specified timeout period to connect to the server after the name resolved. SendTimeout : If sending a request takes longer than this time-out value, the send is canceled. ReceiveTimeout : If a response takes longer than this time-out value, the request is canceled. To identify what type of timeout we can use Winhttp&rsqu
Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more http://serverfault.com/questions/410813/iis7-http-502-in-ie8-over-https about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Server Fault Questions Tags Users Badges Unanswered Ask Question _ Server Fault is a question and answer site for http://stackoverflow.com/questions/24873024/502-error-on-python-page system and network administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to bad gateway the top IIS7 - HTTP 502 in IE8 over HTTPS up vote 0 down vote favorite I am developing web app using .NET 4.0 I'ts hosted on IIS7 and served over HTTPS. When I try to request a page with IE8, it doesn't load completely. So I looked into fiddler, and it shows me an HTTP 502 Error for js file included in the page... It works fine in Mozilla 502 bad gateway though. I am getting this error randomly, sometimes everything works smoothly. To give you a general idea of the environment: Web server behind a load balancer. I am requesting the page (simple HTML with some JavaScript) over HTTPS. any suggestions how to solve this issue? iis-7 https internet-explorer-8 502-error share|improve this question edited Jul 24 '12 at 20:45 Mathias R. Jessen 20.2k33480 asked Jul 24 '12 at 20:33 Ajay Pawaskat 11 add a comment| 1 Answer 1 active oldest votes up vote 0 down vote 502 means Bad Gateway. It's typically something a Load Balancer (or any reverse proxy) says to you when the target of the upstream request doesn't respond to it, or says something nasty. Look at the request, look at the Server web logs (and HTTPERR logs) and the LB logs for the time of the request, and try to match them up. share|improve this answer answered Jul 25 '12 at 10:06 TristanK 7,18811726 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up 502 error on python page up vote 0 down vote favorite I just installed python 27 and I'm trying to run a python page through my localhost server. I'm getting this error: HTTP Error 502.2 - Bad Gateway The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are "". import MySQLdb db = MySQLdb.connect(host="localhost", # your host, usually localhost user="root", # your username passwd="pass", # your password db="my_dbs") # name of the data base cur = db.cursor() cur.execute("SELECT * FROM myTable") # print all the first cell of all the rows for row in cur.fetchall() : print(row[0]) I'm using Windows 7. Any idea what I'm doing wrong? Is it an IIS configuration problem? I have a python handler mapping: pythonHandler Path: *.py State: Enabled Path Type: Unspecified Handler: CGIModule Entry Type: Local python iis-7 share|improve this question asked Jul 21 '14 at 19:21 LauraNMS 56721130 add a comment| 1 Answer 1 active oldest votes up vote 0 down vote IIS is looking for a HTTP response, but you're responding with a listing of raw data. The following code outputs a plain text web page. It prints the number of rows found, and the contents of the first column of each row of data. import MySQLdb print 'Content-type: text/plain' print db = MySQLdb.connect(host="localhost", # your host, usually localhost user="root", # your username passwd="pass", # your password db="my_dbs") # name of the data base cur = db.cursor() cur.execute("SELECT * FROM myTable") rows = cur.fetchall() print "found {} rows".format(len(rows)) # print all the first cell of all the rows for row in rows: print(row[0]) This minimal header marks the data as a HTTP response, as plain text, so the browser will correctly show you the data. share|improve this answer edited Jul 22 '14 at 15:52 answered Jul 21 '14 at 20:05 johntellsall 5,45211518 I added that line. Now I'm no longer getting an error