Ns_ConnReturn(3aolserver) AOLserver Library Procedures Ns_ConnReturn(3aolserver)__________________________________________________________________________________________________________________________________________________NAME
Ns_ConnRedirect - Internally redirect a request to a new local url
SYNOPSIS
#include "ns.h"
int
Ns_ConnRedirect(conn, url)
ARGUMENTS
Ns_Conn conn (in) Pointer to open connection.
char *url (in) Pointer to string of local url.
_________________________________________________________________DESCRIPTION
This routine can be used to internally redirect to a new, local url on the server. The url paramter specifies a path relative to the
server, i.e., without the leading "http://host:port" portion. The server will reset the Ns_Request structure in the open connection
pointed to by conn and restart connection handling, including authorization checks. The result is a standard AOLserver request procedure
result code, either from an underlying call to Ns_ConnRunRequest or the result of one of the authorization response routines such as
Ns_ConnReturnForbidden. Filter callbacks, if any, are not run again with the updated connection.
The Ns_ConnRedirect routine is used internally in the server to support the basic file serving code (i.e., "fastpath") to redirect to spe-
cific files when a directory is opened and by the Ns_RegisterRedirect routine to map standard reponse routines to user-provided local
url's.
EXAMPLE
The following example demonstrates redirecting to an ADP help page within a custom C-level request callback whenever a ?help=topic query
argument is present:
int
MyRequest(void *arg, Ns_Conn *conn)
{
Ns_Set *query = Ns_ConnGetQuery(conn);
/* Redirect to help.adp for /myrequest?help=topic calls. */
if (Ns_SetGet(query, "help")) != NULL) {
return Ns_ConnReturnRedirect(conn, "/help.adp");
}
... handle non-help requests ...
}
SEE ALSO Ns_RegisterRedirct(3), Ns_ConnRunRequest(3), Ns_AuthorizeRequest(3)KEYWORDS
connection, redirect
AOLserver 4.0 Ns_ConnReturn(3aolserver)
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Ns_ConnReturnStatus(3aolserver) AOLserver Library Procedures Ns_ConnReturnStatus(3aolserver)__________________________________________________________________________________________________________________________________________________NAME
Ns_ConnReturnBadRequest, Ns_ConnReturnForbidden, Ns_ConnReturnInternalError, Ns_ConnReturnNoResponse, Ns_ConnReturnNotFound, Ns_ConnReturn-
NotImplemented, Ns_ConnReturnNotModified, Ns_ConnReturnOk, Ns_ConnReturnStatus, Ns_ConnReturnUnauthorized, Ns_RegisterRedirect - Routines
to return simple standard responses
SYNOPSIS
#include "ns.h"
int
Ns_ConnReturnBadRequest(conn, msg)
int
Ns_ConnReturnForbidden(conn)
int
Ns_ConnReturnInternalError(conn)
int
Ns_ConnReturnNoResponse(conn)
int
Ns_ConnReturnNotFound(conn)
int
Ns_ConnReturnNotImplemented(conn)
int
Ns_ConnReturnNotModified(conn)
int
Ns_ConnReturnOk(conn)
int
Ns_ConnReturnStatus(conn, status)
int
Ns_ConnReturnUnauthorized(conn)
void
Ns_RegisterRedirect(server, status, url)
ARGUMENTS
Ns_Conn conn (in) Pointer to open connection.
char *msg (in) String with additional message text.
int status (in) Integer HTTP status code.
char *url (in) String which specifies internal redirection url.
char *server(in) Virtual server.
_________________________________________________________________DESCRIPTION
These routines are used to generate complete responses, including headers, approriate status codes, content types, and possibly short HTML
content messages for the most common HTTP error or status responses. They each coorespond to a particular HTTP status code, for example,
Ns_ConnReturnNotFound generates an HTTP 404 "Not Found" response. They all return NS_OK if the response was sent or NS_ERROR if an under-
lying routine failed.
The default behavior is to return an internal, server generated response possibly with a short English language message, for example "The
requested URL cannot be accessed by this server". This behavior can be modified by calling the Ns_RegisterRedirect to redirect responses
internally for the cooresponding HTTP status code to another URL on the server. The "redirects" server config section can be used to map
these redirects at startup
int Ns_ConnReturnBadRequest(conn, msg)
Returns an HTTP 400 response with the short HTML message "Invalid Request: The HTTP request presented by your browser is invalid."
The optional msg string, if present, is also included in the message body.
int Ns_ConnReturnForbidden(conn)
Returns an HTTP 403 response with the short HTML message "Forbidden: The requested URL cannot be accessed by this server."
int Ns_ConnReturnInternalError(conn)
Returns an HTTP 500 response with the short HTML message "Server Error: The requested URL cannot be accessed due to a system error
on this server."
int Ns_ConnReturnNoResponse(conn)
Equivalent to Ns_ConnReturnStatus(conn, 204).
int Ns_ConnReturnNotFound(conn)
Returns an HTTP 404 response with the short HTML message "Not Found: The requested URL was not found on this server."
int Ns_ConnReturnNotImplemented(conn)
Returns an HTTP 404 response with the short HTML message "Not Implemented: The requested URL or method is not implemented by this
server."
int Ns_ConnReturnNotModified(conn)
Equivalent to Ns_ConnReturnStatus(conn, 304).
int Ns_ConnReturnOk(conn)
Equivalent to Ns_ConnReturnStatus(conn, 200).
int Ns_ConnReturnStatus(conn, status)
Generates a response with the given HTTP status with no content.
int Ns_ConnReturnUnauthorized(conn)
Returns an HTTP 401 response with the short HTML message "Access Denied: The requested URL cannot be accessed because a valid user-
name and password are required." As "WWW-Authenticate: Basic realm=server realm" header is also included in the response.
void Ns_RegisterRedirect(server, status, url)
Redirect the above responses from the given server for the given status code from the simple internal messages described above to
the given internal url. The redirect is performed using Ns_ConnRedirect.
SEE ALSO Ns_ConnFlush(3), Ns_ConnRedirect(3), Ns_ConnSetRequiredHeaders(3), Ns_ConnQueueHeaders(3), ns_return(n)
KEYWORDS
connnection, response
AOLserver 4.0 Ns_ConnReturnStatus(3aolserver)