Android_verify/lib/curl/share/man/man3/curl_easy_getinfo.3

.\" generated by cd2nroff 0.1 from curl_easy_getinfo.md
.TH curl_easy_getinfo 3 "2025-01-17" libcurl
.SH NAME
curl_easy_getinfo \- extract information from a curl handle
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *curl, CURLINFO info, ... );
.fi
.SH DESCRIPTION
Get the \fIinfo\fP kept in the \fIcurl\fP handle. The third argument \fBMUST\fP be
pointing to the specific type of the used option which is documented in each
man page of the \fIinfo\fP option. The data is stored accordingly and can be
relied upon only if this function returns CURLE_OK. Use this function after a
performed transfer if you want to get transfer related data.

You should not free the memory returned by this function unless it is
explicitly mentioned below.
.SH OPTIONS
The following information can be extracted:
.IP CURLINFO_ACTIVESOCKET
The session\(aqs active socket. See \fICURLINFO_ACTIVESOCKET(3)\fP
.IP CURLINFO_APPCONNECT_TIME
The time it took from the start until the SSL connect/handshake with the
remote host was completed as a double in number of seconds. (Added in 7.19.0)
.IP CURLINFO_APPCONNECT_TIME_T
The time it took from the start until the SSL connect/handshake with the
remote host was completed in number of microseconds. (Added in 7.60.0) See
\fICURLINFO_APPCONNECT_TIME_T(3)\fP
.IP CURLINFO_CAINFO
Get the default value for \fICURLOPT_CAINFO(3)\fP. See \fICURLINFO_CAINFO(3)\fP
.IP CURLINFO_CAPATH
Get the default value for \fICURLOPT_CAPATH(3)\fP. See \fICURLINFO_CAPATH(3)\fP
.IP CURLINFO_CERTINFO
Certificate chain. See \fICURLINFO_CERTINFO(3)\fP
.IP CURLINFO_CONDITION_UNMET
Whether or not a time conditional was met or 304 HTTP response.
See \fICURLINFO_CONDITION_UNMET(3)\fP
.IP CURLINFO_CONNECT_TIME
The time it took from the start until the connect to the remote host (or
proxy) was completed. As a double. See \fICURLINFO_CONNECT_TIME(3)\fP
.IP CURLINFO_CONNECT_TIME_T
The time it took from the start until the connect to the remote host (or
proxy) was completed. In microseconds. See \fICURLINFO_CONNECT_TIME_T(3)\fP.
.IP CURLINFO_CONN_ID
The ID of the last connection used by the transfer. (Added in 8.2.0)
See \fICURLINFO_CONN_ID(3)\fP
.IP CURLINFO_CONTENT_LENGTH_DOWNLOAD
(\fBDeprecated\fP) Content length from the Content\-Length header.
See \fICURLINFO_CONTENT_LENGTH_DOWNLOAD(3)\fP
.IP CURLINFO_CONTENT_LENGTH_DOWNLOAD_T
Content length from the Content\-Length header.
See \fICURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3)\fP
.IP CURLINFO_CONTENT_LENGTH_UPLOAD
(\fBDeprecated\fP) Upload size. See \fICURLINFO_CONTENT_LENGTH_UPLOAD(3)\fP
.IP CURLINFO_CONTENT_LENGTH_UPLOAD_T
Upload size. See \fICURLINFO_CONTENT_LENGTH_UPLOAD_T(3)\fP
.IP CURLINFO_CONTENT_TYPE
Content type from the \fIContent\-Type:\fP header. We recommend using
\fIcurl_easy_header(3)\fP instead. See \fICURLINFO_CONTENT_TYPE(3)\fP
.IP CURLINFO_COOKIELIST
List of all known cookies. See \fICURLINFO_COOKIELIST(3)\fP
.IP CURLINFO_EFFECTIVE_METHOD
Last used HTTP method. See \fICURLINFO_EFFECTIVE_METHOD(3)\fP
.IP CURLINFO_EFFECTIVE_URL
Last used URL. See \fICURLINFO_EFFECTIVE_URL(3)\fP
.IP CURLINFO_FILETIME
Remote time of the retrieved document. See \fICURLINFO_FILETIME(3)\fP
.IP CURLINFO_FILETIME_T
Remote time of the retrieved document. See \fICURLINFO_FILETIME_T(3)\fP
.IP CURLINFO_FTP_ENTRY_PATH
The entry path after logging in to an FTP server. See
\fICURLINFO_FTP_ENTRY_PATH(3)\fP
.IP CURLINFO_HEADER_SIZE
Number of bytes of all headers received. See \fICURLINFO_HEADER_SIZE(3)\fP
.IP CURLINFO_HTTPAUTH_AVAIL
Available HTTP authentication methods. See \fICURLINFO_HTTPAUTH_AVAIL(3)\fP
.IP CURLINFO_HTTP_CONNECTCODE
Last proxy CONNECT response code. See \fICURLINFO_HTTP_CONNECTCODE(3)\fP
.IP CURLINFO_HTTP_VERSION
The http version used in the connection. See \fICURLINFO_HTTP_VERSION(3)\fP
.IP CURLINFO_LASTSOCKET
(\fBDeprecated\fP) Last socket used. See \fICURLINFO_LASTSOCKET(3)\fP
.IP CURLINFO_LOCAL_IP
Source IP address of the last connection. See \fICURLINFO_LOCAL_IP(3)\fP
.IP CURLINFO_LOCAL_PORT
Source port number of the last connection. See \fICURLINFO_LOCAL_PORT(3)\fP
.IP CURLINFO_NAMELOOKUP_TIME
Time from start until name resolving completed as a double. See
\fICURLINFO_NAMELOOKUP_TIME(3)\fP
.IP CURLINFO_NAMELOOKUP_TIME_T
Time from start until name resolving completed in number of microseconds. See
\fICURLINFO_NAMELOOKUP_TIME_T(3)\fP
.IP CURLINFO_NUM_CONNECTS
Number of new successful connections used for previous transfer.
See \fICURLINFO_NUM_CONNECTS(3)\fP
.IP CURLINFO_OS_ERRNO
The errno from the last failure to connect. See \fICURLINFO_OS_ERRNO(3)\fP
.IP CURLINFO_PRETRANSFER_TIME
The time it took from the start until the file transfer is just about to
begin. This includes all pre\-transfer commands and negotiations that are
specific to the particular protocol(s) involved. See
\fICURLINFO_PRETRANSFER_TIME(3)\fP
.IP CURLINFO_PRETRANSFER_TIME_T
The time it took from the start until the file transfer is just about to
begin. This includes all pre\-transfer commands and negotiations that are
specific to the particular protocol(s) involved. In microseconds. See
\fICURLINFO_PRETRANSFER_TIME_T(3)\fP
.IP CURLINFO_PRIMARY_IP
Destination IP address of the last connection. See \fICURLINFO_PRIMARY_IP(3)\fP
.IP CURLINFO_PRIMARY_PORT
Destination port of the last connection. See \fICURLINFO_PRIMARY_PORT(3)\fP
.IP CURLINFO_PRIVATE
User\(aqs private data pointer. See \fICURLINFO_PRIVATE(3)\fP
.IP CURLINFO_PROTOCOL
(\fBDeprecated\fP) The protocol used for the connection. (Added in 7.52.0) See
\fICURLINFO_PROTOCOL(3)\fP
.IP CURLINFO_PROXYAUTH_AVAIL
Available HTTP proxy authentication methods. See \fICURLINFO_PROXYAUTH_AVAIL(3)\fP
.IP CURLINFO_PROXY_ERROR
Detailed proxy error. See \fICURLINFO_PROXY_ERROR(3)\fP
.IP CURLINFO_PROXY_SSL_VERIFYRESULT
Proxy certificate verification result. See \fICURLINFO_PROXY_SSL_VERIFYRESULT(3)\fP
.IP CURLINFO_QUEUE_TIME_T
The time during which the transfer was held in a waiting queue before it could
start for real in number of microseconds. (Added in 8.6.0) See
\fICURLINFO_QUEUE_TIME_T(3)\fP
.IP CURLINFO_REDIRECT_COUNT
Total number of redirects that were followed. See \fICURLINFO_REDIRECT_COUNT(3)\fP
.IP CURLINFO_REDIRECT_TIME
The time it took for all redirection steps include name lookup, connect,
pretransfer and transfer before final transaction was started. So, this is
zero if no redirection took place. As a double. See \fICURLINFO_REDIRECT_TIME(3)\fP
.IP CURLINFO_REDIRECT_TIME_T
The time it took for all redirection steps include name lookup, connect,
pretransfer and transfer before final transaction was started. So, this is
zero if no redirection took place. In number of microseconds. See
\fICURLINFO_REDIRECT_TIME_T(3)\fP
.IP CURLINFO_REDIRECT_URL
URL a redirect would take you to, had you enabled redirects. See
\fICURLINFO_REDIRECT_URL(3)\fP
.IP CURLINFO_REFERER
Referrer header. See \fICURLINFO_REFERER(3)\fP
.IP CURLINFO_REQUEST_SIZE
Number of bytes sent in the issued HTTP requests. See \fICURLINFO_REQUEST_SIZE(3)\fP
.IP CURLINFO_RESPONSE_CODE
Last received response code. See \fICURLINFO_RESPONSE_CODE(3)\fP
.IP CURLINFO_RETRY_AFTER
The value from the Retry\-After header. See \fICURLINFO_RETRY_AFTER(3)\fP
.IP CURLINFO_RTSP_CLIENT_CSEQ
The RTSP client CSeq that is expected next. See \fICURLINFO_RTSP_CLIENT_CSEQ(3)\fP
.IP CURLINFO_RTSP_CSEQ_RECV
RTSP CSeq last received. See \fICURLINFO_RTSP_CSEQ_RECV(3)\fP
.IP CURLINFO_RTSP_SERVER_CSEQ
The RTSP server CSeq that is expected next. See \fICURLINFO_RTSP_SERVER_CSEQ(3)\fP
.IP CURLINFO_RTSP_SESSION_ID
RTSP session ID. See \fICURLINFO_RTSP_SESSION_ID(3)\fP
.IP CURLINFO_SCHEME
The scheme used for the connection. (Added in 7.52.0) See \fICURLINFO_SCHEME(3)\fP
.IP CURLINFO_SIZE_DOWNLOAD
(\fBDeprecated\fP) Number of bytes downloaded. See \fICURLINFO_SIZE_DOWNLOAD(3)\fP
.IP CURLINFO_SIZE_DOWNLOAD_T
Number of bytes downloaded. See \fICURLINFO_SIZE_DOWNLOAD_T(3)\fP
.IP CURLINFO_SIZE_UPLOAD
(\fBDeprecated\fP) Number of bytes uploaded. See \fICURLINFO_SIZE_UPLOAD(3)\fP
.IP CURLINFO_SIZE_UPLOAD_T
Number of bytes uploaded. See \fICURLINFO_SIZE_UPLOAD_T(3)\fP
.IP CURLINFO_SPEED_DOWNLOAD
(\fBDeprecated\fP) Average download speed. See \fICURLINFO_SPEED_DOWNLOAD(3)\fP
.IP CURLINFO_SPEED_DOWNLOAD_T
Average download speed. See \fICURLINFO_SPEED_DOWNLOAD_T(3)\fP
.IP CURLINFO_SPEED_UPLOAD
(\fBDeprecated\fP) Average upload speed. See \fICURLINFO_SPEED_UPLOAD(3)\fP
.IP CURLINFO_SPEED_UPLOAD_T
Average upload speed in number of bytes per second. See
\fICURLINFO_SPEED_UPLOAD_T(3)\fP
.IP CURLINFO_SSL_ENGINES
A list of OpenSSL crypto engines. See \fICURLINFO_SSL_ENGINES(3)\fP
.IP CURLINFO_SSL_VERIFYRESULT
Certificate verification result. See \fICURLINFO_SSL_VERIFYRESULT(3)\fP
.IP CURLINFO_STARTTRANSFER_TIME
The time it took from the start until the first byte is received by libcurl.
As a double. See \fICURLINFO_STARTTRANSFER_TIME(3)\fP
.IP CURLINFO_STARTTRANSFER_TIME_T
The time it took from the start until the first byte is received by libcurl.
In microseconds. See \fICURLINFO_STARTTRANSFER_TIME_T(3)\fP
.IP CURLINFO_TLS_SESSION
(\fBDeprecated\fP) TLS session info that can be used for further processing. See
\fICURLINFO_TLS_SESSION(3)\fP. Use \fICURLINFO_TLS_SSL_PTR(3)\fP instead!
.IP CURLINFO_TLS_SSL_PTR
TLS session info that can be used for further processing. See
\fICURLINFO_TLS_SSL_PTR(3)\fP
.IP CURLINFO_TOTAL_TIME
Total time of previous transfer. See \fICURLINFO_TOTAL_TIME(3)\fP
.IP CURLINFO_TOTAL_TIME_T
Total time of previous transfer. See \fICURLINFO_TOTAL_TIME_T(3)\fP
.IP CURLINFO_USED_PROXY
Whether the proxy was used (Added in 8.7.0). See \fICURLINFO_USED_PROXY(3)\fP
.IP CURLINFO_XFER_ID
The ID of the transfer. (Added in 8.2.0) See \fICURLINFO_XFER_ID(3)\fP
.SH TIMES
An overview of the time values available from \fIcurl_easy_getinfo(3)\fP

.nf
curl_easy_perform()
    |
    |--QUEUE
    |--|--NAMELOOKUP
    |--|--|--CONNECT
    |--|--|--|--APPCONNECT
    |--|--|--|--|--PRETRANSFER
    |--|--|--|--|--|--STARTTRANSFER
    |--|--|--|--|--|--|--TOTAL
    |--|--|--|--|--|--|--REDIRECT
.fi

 \fICURLINFO_QUEUE_TIME_T(3)\fP, \fICURLINFO_NAMELOOKUP_TIME_T(3)\fP,
 \fICURLINFO_CONNECT_TIME_T(3)\fP, \fICURLINFO_APPCONNECT_TIME_T(3)\fP,
 \fICURLINFO_PRETRANSFER_TIME_T(3)\fP, \fICURLINFO_STARTTRANSFER_TIME_T(3)\fP,
 \fICURLINFO_TOTAL_TIME_T(3)\fP, \fICURLINFO_REDIRECT_TIME_T(3)\fP
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
    res = curl_easy_perform(curl);

    if(CURLE_OK == res) {
      char *ct;
      /* ask for the content-type */
      res = curl_easy_getinfo(curl, CURLINFO_CONTENT_TYPE, &ct);

      if((CURLE_OK == res) && ct)
        printf("We received Content-Type: %s\\n", ct);
    }

    /* always cleanup */
    curl_easy_cleanup(curl);
  }
}
.fi
.SH AVAILABILITY
Added in curl 7.4.1
.SH RETURN VALUE
If the operation was successful, CURLE_OK is returned. Otherwise an
appropriate error code is returned.
.SH SEE ALSO
.BR curl_easy_setopt (3)