Server Control
Httpd_Init
Initialize the httpd module. Call this early, before Httpd_Server.
Httpd_Server {port} {name} {ipaddr}
Start the server by listening for connections on the desired port. This may be re-run to re-start the server. Call this late, fter Httpd_Init and the init calls for the other modules.
Httpd_SecureServer {port} {name} {ipaddr}
Like Httpd_Server, but with additional setup for SSL. This requires the TLS extension.
Httpd_VirtualHost host file
Create a slave interpreter for the named $host and load a complete tclhttpd into it, configured by $file. A request for $host will be handled by the corresponding slave interp. The actual mechanism is that the master interp accepts all socket connections. When the Host: header on the request is received, the connection gets passed to the appropriate slave interp for further handling. If there is no Host: header (really ancient clients?) or if the Host: value is not one of those specified in the Config virtual argument, then the master interp handles the request according to whatever additional configuration details are found in the master configuration file. In a sense, every IP address served by tclhttpd has a "default" site determined by the master config file. The configuration values used in the slave interp are first inherited from the master. In the $configFile, you only need to specify those values that distinguish the virtual site from the default site. In my experience that usually includes the following Config options: docRoot, main, webmaster, and LogFile.
Httpd_VirtualHosts hosts file
Create virtual hosts for the names in $hosts with the configuration $file
Httpd_ServerShutdown
Close the server's HTTP socket.
Httpd_RegisterShutdown cmd called by: counter.tcl
Register a Tcl command to be called by Httpd_Shutdown
Httpd_SecureServerShutdown
Close the server's secure socket.
Httpd_Shutdown called by: srvui.tcl
Kill the server gracefully
Server Information
Httpd_SecurePort
The server's secure port.
Httpd_Webmaster called by: debug.tcl
return or define an email address for the webmaster
Connection Information
Httpd_SelfUrl url sock called by: redirect.tcl
Create an absolute URL for this server
Httpd_Protocol sock
Return the protocol for the connection
Httpd_Port sock
Return the port for the connection
Httpd_Name sock
Return the server name for the connection
Httpd_CurrentSocket {sock}
Return (or set) the handle to the current socket.
Httpd_DumpHeaders sock
Dump out the protocol headers so they can be saved for later.
Httpd_Peername sock called by: logstd.tcl
The clients dns name.
Httpd_RequestComplete sock called by: url.tcl
Detect if a request has been sent. The holder of a socket might need to know of the URL request was completed with one of the return-data commands, or is still lingering open.
Connection Control
Httpd_RequestAuth sock type realm called by: auth.tcl
Generate the (401) Authorization required reply
Httpd_Suspend sock {timeout} called by: url.tcl
Suspend Wire Callback - for async transactions Use Httpd_Resume once you are back in business
Httpd_Resume sock {timeout}
Resume processing of a request. Sets up a bit of global state that has been cleared by Httpd_Suspend.
Httpd_SockClose sock closeit {message} called by: cgi.tcl url.tcl
"Close" a connection, although the socket might actually remain open for a keep-alive connection. This means the HTTP transaction is fully complete.
Httpd_CompletionCallback sock cmd called by: url.tcl
Register a procedure to be called when an HTTP request is completed, either normally or forcibly closed. This gives a URL implementation a guaranteed callback to clean up or log requests.
Httpd_Error sock code {detail} called by: auth.tcl cgi.tcl doc_error.tcl include.tcl url.tcl
send the error message, log it, and close the socket.
Httpd_Pair sock fd called by: none
Pair two fd's - typically for tunnelling Close both if either one closes (or gets an error)
Cookie Commands
Httpd_SetCookie sock cookie {modify} called by: cookie.tcl
Define a cookie to be used in a reply Call this before using Httpd_ReturnFile or Httpd_ReturnData
Httpd_RemoveCookies sock pattern called by: interface
Remove previously set cookies from the reply. Any cookies that match the glob pattern are removed. This is useful for expiring a cookie that was previously set.
Connection Reply
Httpd_ReturnFile sock type path {offset} called by: doc.tcl snmp.tcl status.tcl template.tcl
Return a file.
Httpd_ReturnData sock type content {code} {close} called by: direct.tcl imagemap.tcl include.tcl snmp.tcl status.tcl template.tcl upload.tcl
Return data for a page.
Httpd_ReturnCacheableData sock type content date {code} called by: interface
Return data with a Last-Modified time so that proxy servers can cache it. Or they seem to, anyway.
Httpd_NotModified sock called by: none
Generate a Not Modified reply (code 304)
Post Commands
Httpd_PostDataSize sock called by: template.tcl
The amount of post data available.
Httpd_GetPostData sock varName {size} called by: thread.tcl url.tcl
The amount of data left to read. When this goes to zero, you are done.
Httpd_GetPostDataAsync sock varName blockSize cmd called by: none
Read the POST data into a Tcl variable, but do it in the background so the server doesn't block on the socket. This schedules a readable fileevent to read all the POST data asynchronously. The data is appened to the named variable. The callback is made
Httpd_ReadPostDataAsync sock cmd called by: url.tcl
Convenience layer on Http-GetPostDataAsync to read the POST data into a the data(query) variable.
Httpd_CopyPostData sock channel cmd called by: none
Copy the POST data to a channel and make a callback when that has completed.
Httpd_GetPostChannel sock sizeName called by: none
The socket, as long as there is POST data to read
Redirection Commands
Httpd_Redirect newurl sock called by: direct.tcl imagemap.tcl redirect.tcl url.tcl
Generate a redirect reply (code 302)
Httpd_RedirectSelf newurl sock called by: redirect.tcl snmp.tcl
Generate a redirect to another URL on this server.
Httpd_RedirectDir sock called by: doc.tcl
Generate a redirect because the trailing slash isn't present on a URL that corresponds to a directory.