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hi:
i find a strange issue, when i push a POST from broswer, we need wait the backend send the result at least 180 seconds. but i find when the wait time reach 120 seconds. hiawatha will receive this POST request again. but my PHP code doesn't send this request.
here is my httpd.conf

ServerId = 33:33
ConnectionsTotal = 100
ConnectionsPerIP = 10
SystemLogfile = /dev/null
GarbageLogfile = /dev/null
TimeForCGI = 300
Binding {
Port = 80
    MaxRequestSize = 25600
    Interface = 10.155.20.108
}
Binding {
    Port = 443
    MaxRequestSize = 25600
    Interface = 10.155.20.108
    ServerKey = /usr/local/etc/hiawatha/webui_serverkey.pem
    UseSSL = yes
}
FastCGIserver {
    FastCGIid = FCGI
    ServerRoot = /tmp/web_pages
    ConnectTo = 127.0.0.1:2010
    Extension = php
}
FastCGIserver {
    FastCGIid = FCGI2
    ServerRoot = /usr/local/var/www/hiawatha
    ConnectTo = 127.0.0.1:2010
    Extension = php
}
FastCGIserver {
    FastCGIid = PHP5
    ConnectTo = 127.0.0.1:2008
    Extension = php5
    SessionTimeout = 180
}

Hostname = 127.0.0.1
WebsiteRoot = /usr/local/var/www/hiawatha
StartFile = index.html
ExecuteCGI = no
AccessLogfile = /dev/null
ErrorLogfile = /tmp/http-err.log

VirtualHost {
    Hostname =  10.155.20.108
    WebsiteRoot = /usr/local/var/www/hiawatha/webui
    StartFile = index.php5
    FastCGI = PHP5
}

the debug informatin about the redundant POST is
2008-10-22 11:17:33 debug [ws_verbose, log.c, 222]: 10.155.20.120|Wed 22 Oct 2008 11:17:33 +0000|200|357||POST /action.php5?_page=ImageManagement&_action=add&_actionType=0 HTTP/1.1|Host: 10.155.20.108|User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.0.3) Gecko/2008092417 Firefox/3.0.3 FirePHP/0.1.2|Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8|Accept-Language: zh-cn,zh;q=0.5|Accept-Encoding: gzip,deflate|Accept-Charset: gb2312,utf-8;q=0.7,*;q=0.7|Keep-Alive: 300|Connection: keep-alive|X-Requested-With: XMLHttpRequ


can you help me?

my php.ini about CGI timeout setting is:
;;;;;;;;;;;;;;;;;;;
; Resource Limits ;
;;;;;;;;;;;;;;;;;;;

max_execution_time = 300 ; Maximum execution time of each script, in seconds
max_input_time = -1 ; Maximum amount of time each script may spend parsing request data
memory_limit = 20M ; Maximum amount of memory a script may consume (8MB)

Hiawatha doesn't renerate HTTP requests, so if Hiawatha receives a 'second one', it must have been sent to Hiawatha. Probably by your browsery. Try using a network sniffer to see where it comes from. TCPdump for Unix of Wireshark for Windows.

hi :
Does hiawatha has limitation for http request? i find after 120 second for http request, hiawatha will disconnect with browser, is it right?

my hiawatha version is 5.2.7

Yes, Hiawatha will disconnect after a certain amount of time. This can be configured via the TimeForRequest setting.

Version 5.2.7 can't be right. There never was a 5.2.7 release. You can see the version of Hiawatha by using '/usr/local/sbin/hiawatha -v'.