/// <summary>
/// Called by the server (via the Service method)
/// to allow a servlet to handle a OPTIONS request.
///
/// The OPTIONS request determines which HTTP methods
/// the server supports and
/// returns an appropriate header. For example, if a servlet
/// overrides DoGet, this method returns the
/// following header:
///
/// <code>Allow: GET, HEAD, TRACE, OPTIONS</code>
///
/// There's no need to override this method unless the
/// servlet implements new HTTP methods, beyond those
/// implemented by HTTP 1.1.
/// </summary>
/// <param name="req">
/// the IHttpServletRequest object that
/// contains the request the client made of
/// the servlet</param>
/// <param name="resp">
/// the IHttpServletResponse object that
/// contains the response the servlet returns
/// to the client
/// </param>
/// <exception cref="IOException">
/// if an input or output error occurs
/// while the servlet is handling the
/// OPTIONS request
/// </exception>
/// <exception cref="ServletException">
/// if the request for the
/// OPTIONS cannot be handled
/// </exception>
protected void DoOptions(IHttpServletRequest req, IHttpServletResponse resp)
{
MethodInfo[] methods = GetAllDeclaredMethods(this.GetType());
bool ALLOW_GET = false;
bool ALLOW_HEAD = false;
bool ALLOW_POST = false;
bool ALLOW_PUT = false;
bool ALLOW_DELETE = false;
bool ALLOW_TRACE = true;
bool ALLOW_OPTIONS = true;
for (int i = 0; i < methods.Length; i++)
{
MethodInfo m = methods[i];
if (m.Name.Equals("DoGet"))
{
ALLOW_GET = true;
ALLOW_HEAD = true;
}
if (m.Name.Equals("DoPost"))
ALLOW_POST = true;
if (m.Name.Equals("DoPut"))
ALLOW_PUT = true;
if (m.Name.Equals("DoDelete"))
ALLOW_DELETE = true;
}
string allow = null;
if (ALLOW_GET)
if (allow == null) allow = METHOD_GET;
if (ALLOW_HEAD)
if (allow == null) allow = METHOD_HEAD;
else allow += ", " + METHOD_HEAD;
if (ALLOW_POST)
if (allow == null) allow = METHOD_POST;
else allow += ", " + METHOD_POST;
if (ALLOW_PUT)
if (allow == null) allow = METHOD_PUT;
else allow += ", " + METHOD_PUT;
if (ALLOW_DELETE)
if (allow == null) allow = METHOD_DELETE;
else allow += ", " + METHOD_DELETE;
if (ALLOW_TRACE)
if (allow == null) allow = METHOD_TRACE;
else allow += ", " + METHOD_TRACE;
if (ALLOW_OPTIONS)
if (allow == null) allow = METHOD_OPTIONS;
else allow += ", " + METHOD_OPTIONS;
resp.SetHeader("Allow", allow);
}
/// <summary>
/// The default behavior of this method is to call SetHeader(string name, string value)
/// on the wrapped response object.
/// </summary>
/// <param name="name"></param>
/// <param name="value"></param>
public void SetHeader(string name, string value)
{
HttpServletResponse.SetHeader(name, value);
}
/// <summary>
/// Called by the server (via the Service method)
/// to allow a servlet to handle a OPTIONS request.
///
/// The OPTIONS request determines which HTTP methods
/// the server supports and
/// returns an appropriate header. For example, if a servlet
/// overrides DoGet, this method returns the
/// following header:
///
/// <code>Allow: GET, HEAD, TRACE, OPTIONS</code>
///
/// There's no need to override this method unless the
/// servlet implements new HTTP methods, beyond those
/// implemented by HTTP 1.1.
/// </summary>
/// <param name="req">
/// the IHttpServletRequest object that
/// contains the request the client made of
/// the servlet</param>
/// <param name="resp">
/// the IHttpServletResponse object that
/// contains the response the servlet returns
/// to the client
/// </param>
/// <exception cref="IOException">
/// if an input or output error occurs
/// while the servlet is handling the
/// OPTIONS request
/// </exception>
/// <exception cref="ServletException">
/// if the request for the
/// OPTIONS cannot be handled
/// </exception>
protected void DoOptions(IHttpServletRequest req, IHttpServletResponse resp)
{
MethodInfo[] methods = GetAllDeclaredMethods(this.GetType());
bool ALLOW_GET = false;
bool ALLOW_HEAD = false;
bool ALLOW_POST = false;
bool ALLOW_PUT = false;
bool ALLOW_DELETE = false;
bool ALLOW_TRACE = true;
bool ALLOW_OPTIONS = true;
for (int i = 0; i < methods.Length; i++)
{
MethodInfo m = methods[i];
if (m.Name.Equals("DoGet"))
{
ALLOW_GET = true;
ALLOW_HEAD = true;
}
if (m.Name.Equals("DoPost"))
{
ALLOW_POST = true;
}
if (m.Name.Equals("DoPut"))
{
ALLOW_PUT = true;
}
if (m.Name.Equals("DoDelete"))
{
ALLOW_DELETE = true;
}
}
string allow = null;
if (ALLOW_GET)
{
if (allow == null)
{
allow = METHOD_GET;
}
}
if (ALLOW_HEAD)
{
if (allow == null)
{
allow = METHOD_HEAD;
}
else
{
allow += ", " + METHOD_HEAD;
}
}
if (ALLOW_POST)
{
if (allow == null)
{
allow = METHOD_POST;
}
else
{
allow += ", " + METHOD_POST;
}
}
if (ALLOW_PUT)
{
if (allow == null)
{
allow = METHOD_PUT;
}
else
{
allow += ", " + METHOD_PUT;
}
}
if (ALLOW_DELETE)
{
if (allow == null)
{
allow = METHOD_DELETE;
}
else
{
allow += ", " + METHOD_DELETE;
}
}
if (ALLOW_TRACE)
{
if (allow == null)
{
allow = METHOD_TRACE;
}
else
{
allow += ", " + METHOD_TRACE;
}
}
if (ALLOW_OPTIONS)
{
if (allow == null)
{
allow = METHOD_OPTIONS;
}
else
{
allow += ", " + METHOD_OPTIONS;
}
}
resp.SetHeader("Allow", allow);
}