Procedure calling a webpage.

Question

We are trying to open a webpage from oracle procedure.Following error is coming out when we try this.
Please help us in this issue.
ORA-29273: HTTP request failed
ORA-06512: at "SYS.UTL_HTTP", line 1231
ORA-12535: TNS:operation timed out
ORA-06512: at "ISECURETEST.TEMP_PROC", line 60
ORA-06512: at line 2
inside

Answer 1

I am sending our source code. Please have a look at it and help us.
create or replace
PROCEDURE Test
url IN VARCHAR2,
username IN VARCHAR2 DEFAULT NULL,
password IN VARCHAR2 DEFAULT NULL
) AS
req utl_http.req;
resp utl_http.resp;
name VARCHAR2(256);
value VARCHAR2(1024);
data VARCHAR2(255);
my_scheme VARCHAR2(256);
my_realm VARCHAR2(256);
my_proxy BOOLEAN;
BEGIN
--OWA_UTIL.mime_header('text/html'); 
-- When going through a firewall, pass requests through this host.
-- Specify sites inside the firewall that don't need the proxy host.
dbms_output.put_line('Web proxy server is protected2.');
utl_http.set_proxy('tmgsrv01.g7infotech.local:8080', 'g7infotech.local');
-- Ask UTL_HTTP not to raise an exception for 4xx and 5xx status codes,
-- rather than just returning the text of the error page.
utl_http.set_response_error_check(FALSE);
dbms_output.put_line('Web proxy server is protected9.');
-- Begin retrieving this web page.
req := utl_http.begin_request(url);
dbms_output.put_line('Web proxy server is protected20.');
-- Identify ourselves. Some sites serve special pages for particular browsers.
utl_http.set_header(req, 'User-Agent', 'Internet Explorer/7.0');
utl_http.set_transfer_timeout(1800);
-- Specify a user ID and password for pages that require them.
IF (username IS NOT NULL) THEN
utl_http.set_authentication(req, username, password);
END IF;
BEGIN
-- Now start receiving the HTML text.
resp := utl_http.get_response(req);
utl_http.set_transfer_timeout(3600);
-- Show the status codes and reason phrase of the response.
dbms_output.put_line('HTTP response status code: ' || resp.status_code);
dbms_output.put_line('HTTP response reason phrase: ' || resp.reason_phrase);
-- Look for client-side error and report it.
IF (resp.status_code >= 400) AND (resp.status_code <= 499) THEN
-- Detect whether the page is password protected, and we didn't supply
-- the right authorization.
IF (resp.status_code = utl_http.HTTP_UNAUTHORIZED) THEN
utl_http.get_authentication(resp, my_scheme, my_realm, my_proxy);
IF (my_proxy) THEN
dbms_output.put_line('Web proxy server is protected.');
dbms_output.put('Please supply the required ' || my_scheme ||
' authentication username/password for realm ' || my_realm ||
' for the proxy server.');
ELSE
dbms_output.put_line('Web page ' || url || ' is protected.');
dbms_output.put('Please supplied the required ' || my_scheme ||
' authentication username/password for realm ' || my_realm ||
' for the Web page.');
END IF;
ELSE
dbms_output.put_line('Check the URL.');
END IF;
utl_http.end_response(resp);
UTL_HTTP.set_transfer_timeout(1800);
RETURN;
-- Look for server-side error and report it.
ELSIF (resp.status_code >= 500) AND (resp.status_code <= 599) THEN
dbms_output.put_line('Check if the Web site is up.');
utl_http.end_response(resp);
RETURN;
END IF;
-- The HTTP header lines contain information about cookies, character sets,
-- and other data that client and server can use to customize each session.
FOR i IN 1..utl_http.get_header_count(resp) LOOP
utl_http.get_header(resp, i, name, value);
dbms_output.put_line(name || ': ' || value);
END LOOP;
-- Keep reading lines until no more are left and an exception is raised.
LOOP
utl_http.read_line(resp, value);
dbms_output.put_line(value);
END LOOP;
/* EXCEPTION
WHEN utl_http.end_of_body THEN
--utl_http.get_detailed_sqlerrm(resp);
dbms_output.put_line('error:'||sqlerrm);
utl_http.end_response(resp);
END;
END;