curl-library
RE: Timeout & crash Issue
Date: Mon, 22 Mar 2004 14:23:15 -0000
Thank you for the help.
The crash seems to have ceased. The problem seemed to be the non-null
terminated stream.
Has anyone any information though on the timeout issue. It still seems to
not return from the request
after the timeout period. Do I need to use CURLOPT_TIMEOUT in conjunction
with another setting??
Thanks again,
Fergal.
-----Original Message-----
From: Gunn, Fergal
Sent: Friday, March 19, 2004 9:58 AM
To: 'curl-library_at_cool.haxx.se'
Subject: Timeout & crash Issue
I've seen some issues when using libcurl. We are using Curl 7.10.5
1) Our program is crashing out on us at the same place every time (see red
line below).
"string out = outbuf.str();"
The thing that makes this all the more hard to debug is that we have no
debug or trace
information when it does crash. The program just stops and not core
file or error log.
Is there some setting we must set in order to get debug info???
2) The http request we are making sometimes fails to return and I tried to
use the CURLOPT_TIMEOUT
setting below to interrupt a request. This has not worked for me
though. Is there another
setting that needs to be set in conjunction with CURLOPT_TIMEOUT??
I'd appreciate any help with these problems as I have only very minimal Curl
experience.
Here's the problematic code
void XHMP::GetXmlData(std::string & xml_data, const bool secure)
{
try
{
CURL *curl;
ostrstream outbuf;
string url;
curl = curl_easy_init();
if (curl != NULL)
{
struct curl_slist *headers=NULL;
url = secure ? "https://" : "http://";
url += m_host;
url += secure ? "" : ":8000";
url += "/servlets/CelerraManager" ;
curl_easy_setopt(curl, CURLOPT_URL,url.c_str());
headers = curl_slist_append(headers, "Content-Type: text/xml");
string user = "EMCXMPUser: " + m_uname;
headers = curl_slist_append(headers, user.c_str());
headers = curl_slist_append(headers, "EMCXMPAction: mtr");
if (secure)
{
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 1);
}
curl_easy_setopt(curl, CURLOPT_POSTFIELDS,m_XmlString.c_str() );
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(curl,CURLOPT_WRITEFUNCTION,&curl_write_hook);
curl_easy_setopt(curl,CURLOPT_FILE,&outbuf);
curl_easy_setopt(curl,CURLOPT_TIMEOUT,30);
char errorBuf[CURL_ERROR_SIZE];
curl_easy_setopt(curl,CURLOPT_ERRORBUFFER,&errorBuf);
int status = curl_easy_perform(curl);
if (status == 0)
{
string out = outbuf.str();
int index = out.find_last_of("</Packet>");
xml_data = out.substr(0,index+1);
}
curl_slist_free_all(headers);
curl_easy_cleanup(curl);
}
}
size_t XHMP::curl_write_hook(void *ptr, size_t size, size_t nmemb, void
*stream)
{
// *stream is actually an ostream object
ostrstream& buf=*(reinterpret_cast<ostrstream*>(stream));
buf.write(reinterpret_cast<const char*>(ptr),size*nmemb);
return size*nmemb;
}
_________________________________________________________
Fergal Gunn
Software Engineer
EMC Cork, Software Development ( Phone: + 353 (0)21 493 8277
Ovens, Co. Cork, Ireland. Ê Fax: + 353 (0)21 428 1833
<http://www.emc.com/> http://www.emc.com * e-mail:
Gunn_Fergal_at_emc.com
_________________________________________________________
Received on 2004-03-22