HTTP Error 408
Request timeout
Introduction
The Web server (running the Web site) thinks that there has been too long an interval of time between 1) the establishment of an IP connection (socket) between the client (e.g. your Web browser or our CheckUpDown robot) and the server and 2) the receipt of any data on that socket, so the server has dropped the connection. The socket connection has actually been lost - the Web server has 'timed out' on that particular socket connection. The request from the client must be repeated - in a timely manner.408 errors in the HTTP cycle
Any client (e.g. your Web browser or our CheckUpDown robot) goes through the following cycle:Fixing 408 errors - general
This error occurs in the final step above when the client receives an HTTP status code that it recognises as '408'. (Last updated: March 2012).
- Obtain an IP address from the IP name of the site (the site URL without the leading 'http://'). This lookup (conversion of IP name to IP address) is provided by domain name servers (DNSs).
- Open an IP socket connection to that IP address.
- Write an HTTP data stream through that socket.
- Receive an HTTP data stream back from the Web server in response. This data stream contains status codes whose values are determined by the HTTP protocol. Parse this data stream for status codes and other useful information.
408 errors are often difficult to resolve. They typically involve one-off variations in system workload or operations.Fixing 408 errors - CheckUpDown
If you see persistent 408 errors, the first thing to consider is the workload on the Web server - particularly around the time the 408 errors were generated. If this is light, then you also need to consider workload on the client system. If the computer systems on both ends of the socket connection seem to be running normally, then temporary Internet surges may be to blame.
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