Returns a standard HTML response page for an HTTP error. Note: Deprecated

Returns the status, headers, and body of an error response.

Use like:

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status, headers, body = wsgilib.error_response(
    '301 Moved Permanently', 'Moved to <a href="%s">%s</a>'
    % (url, url))
start_response(status, headers)
return [body]

Note: Deprecated

An application that emits the given error response.

Note: Deprecated

Is header named name present in headers?

Returns the header's value, or None if no such header. If a header appears more than once, all the values of the headers are joined with ','. Note that this is consistent /w RFC 2616 section 4.2 which states:

It MUST be possible to combine the multiple header fields

into one "field-name: field-value" pair, without changing the semantics of the message, by appending each subsequent field-value to the first, each separated by a comma.

However, note that the original netscape usage of 'Set-Cookie', especially in MSIE which contains an 'expires' date will is not compatible with this particular concatination method.

Removes the named header from the list of headers. Returns the value of that header, or None if no header found. If multiple headers are found, only the last one is returned.

Updates the headers replacing the first occurance of the given name with the value provided; asserting that no further occurances happen. Note that this is _not_ the same as remove_header and then append, as two distinct operations (del followed by an append) are not atomic in a threaded environment. Returns the previous header value for the provided name, if any. Clearly one should not use this function with set-cookie or other names that may have more than one occurance in the headers.