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307 lines
11 KiB
Groff
307 lines
11 KiB
Groff
.\" generated by cd2nroff 0.1 from curl_easy_getinfo.md
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.TH curl_easy_getinfo 3 "2024-06-01" libcurl
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.SH NAME
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curl_easy_getinfo \- extract information from a curl handle
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *curl, CURLINFO info, ... );
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.fi
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.SH DESCRIPTION
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Get the \fIinfo\fP kept in the \fIcurl\fP handle. The third argument \fBMUST\fP be
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pointing to the specific type of the used option which is documented in each
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man page of the \fIinfo\fP option. The data is stored accordingly and can be
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relied upon only if this function returns CURLE_OK. Use this function after a
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performed transfer if you want to get transfer related data.
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You should not free the memory returned by this function unless it is
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explicitly mentioned below.
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.SH AVAILABLE INFORMATION
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The following information can be extracted:
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.IP CURLINFO_EFFECTIVE_METHOD
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Last used HTTP method. See \fICURLINFO_EFFECTIVE_METHOD(3)\fP
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.IP CURLINFO_EFFECTIVE_URL
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Last used URL. See \fICURLINFO_EFFECTIVE_URL(3)\fP
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.IP CURLINFO_RESPONSE_CODE
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Last received response code. See \fICURLINFO_RESPONSE_CODE(3)\fP
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.IP CURLINFO_REFERER
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Referrer header. See \fICURLINFO_REFERER(3)\fP
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.IP CURLINFO_HTTP_CONNECTCODE
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Last proxy CONNECT response code. See \fICURLINFO_HTTP_CONNECTCODE(3)\fP
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.IP CURLINFO_HTTP_VERSION
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The http version used in the connection. See \fICURLINFO_HTTP_VERSION(3)\fP
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.IP CURLINFO_FILETIME
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Remote time of the retrieved document. See \fICURLINFO_FILETIME(3)\fP
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.IP CURLINFO_FILETIME_T
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Remote time of the retrieved document. See \fICURLINFO_FILETIME_T(3)\fP
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.IP CURLINFO_TOTAL_TIME
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Total time of previous transfer. See \fICURLINFO_TOTAL_TIME(3)\fP
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.IP CURLINFO_TOTAL_TIME_T
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Total time of previous transfer. See \fICURLINFO_TOTAL_TIME_T(3)\fP
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.IP CURLINFO_NAMELOOKUP_TIME
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Time from start until name resolving completed. See
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\fICURLINFO_NAMELOOKUP_TIME(3)\fP
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.IP CURLINFO_NAMELOOKUP_TIME_T
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Time from start until name resolving completed. See
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\fICURLINFO_NAMELOOKUP_TIME_T(3)\fP
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.IP CURLINFO_CONNECT_TIME
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Time from start until remote host or proxy completed.
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See \fICURLINFO_CONNECT_TIME(3)\fP
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.IP CURLINFO_CONNECT_TIME_T
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Time from start until remote host or proxy completed.
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See \fICURLINFO_CONNECT_TIME_T(3)\fP
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.IP CURLINFO_APPCONNECT_TIME
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Time from start until SSL/SSH handshake completed.
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See \fICURLINFO_APPCONNECT_TIME(3)\fP
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.IP CURLINFO_APPCONNECT_TIME_T
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Time from start until SSL/SSH handshake completed.
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See \fICURLINFO_APPCONNECT_TIME_T(3)\fP
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.IP CURLINFO_PRETRANSFER_TIME
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Time from start until just before the transfer begins.
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See \fICURLINFO_PRETRANSFER_TIME(3)\fP
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.IP CURLINFO_PRETRANSFER_TIME_T
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Time from start until just before the transfer begins.
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See \fICURLINFO_PRETRANSFER_TIME_T(3)\fP
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.IP CURLINFO_QUEUE_TIME_T
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Time during which this transfer was held in a waiting queue.
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See \fICURLINFO_QUEUE_TIME_T(3)\fP
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.IP CURLINFO_USED_PROXY
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Whether the proxy was used (Added in 8.7.0). See \fICURLINFO_USED_PROXY(3)\fP
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.IP CURLINFO_STARTTRANSFER_TIME
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Time from start until just when the first byte is received.
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See \fICURLINFO_STARTTRANSFER_TIME(3)\fP
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.IP CURLINFO_STARTTRANSFER_TIME_T
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Time from start until just when the first byte is received.
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See \fICURLINFO_STARTTRANSFER_TIME_T(3)\fP
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.IP CURLINFO_REDIRECT_TIME
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Time taken for all redirect steps before the final transfer.
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See \fICURLINFO_REDIRECT_TIME(3)\fP
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.IP CURLINFO_REDIRECT_TIME_T
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Time taken for all redirect steps before the final transfer.
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See \fICURLINFO_REDIRECT_TIME_T(3)\fP
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.IP CURLINFO_REDIRECT_COUNT
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Total number of redirects that were followed.
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See \fICURLINFO_REDIRECT_COUNT(3)\fP
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.IP CURLINFO_REDIRECT_URL
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URL a redirect would take you to, had you enabled redirects.
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See \fICURLINFO_REDIRECT_URL(3)\fP
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.IP CURLINFO_SIZE_UPLOAD
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(Deprecated) Number of bytes uploaded.
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See \fICURLINFO_SIZE_UPLOAD(3)\fP
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.IP CURLINFO_SIZE_UPLOAD_T
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Number of bytes uploaded.
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See \fICURLINFO_SIZE_UPLOAD_T(3)\fP
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.IP CURLINFO_SIZE_DOWNLOAD
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(Deprecated) Number of bytes downloaded.
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See \fICURLINFO_SIZE_DOWNLOAD(3)\fP
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.IP CURLINFO_SIZE_DOWNLOAD_T
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Number of bytes downloaded.
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See \fICURLINFO_SIZE_DOWNLOAD_T(3)\fP
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.IP CURLINFO_SPEED_DOWNLOAD
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(Deprecated) Average download speed.
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See \fICURLINFO_SPEED_DOWNLOAD(3)\fP
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.IP CURLINFO_SPEED_DOWNLOAD_T
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Average download speed.
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See \fICURLINFO_SPEED_DOWNLOAD_T(3)\fP
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.IP CURLINFO_SPEED_UPLOAD
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(Deprecated) Average upload speed.
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See \fICURLINFO_SPEED_UPLOAD(3)\fP
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.IP CURLINFO_SPEED_UPLOAD_T
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Average upload speed.
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See \fICURLINFO_SPEED_UPLOAD_T(3)\fP
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.IP CURLINFO_HEADER_SIZE
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Number of bytes of all headers received.
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See \fICURLINFO_HEADER_SIZE(3)\fP
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.IP CURLINFO_REQUEST_SIZE
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Number of bytes sent in the issued HTTP requests.
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See \fICURLINFO_REQUEST_SIZE(3)\fP
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.IP CURLINFO_SSL_VERIFYRESULT
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Certificate verification result.
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See \fICURLINFO_SSL_VERIFYRESULT(3)\fP
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.IP CURLINFO_PROXY_ERROR
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Detailed proxy error.
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See \fICURLINFO_PROXY_ERROR(3)\fP
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.IP CURLINFO_PROXY_SSL_VERIFYRESULT
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Proxy certificate verification result.
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See \fICURLINFO_PROXY_SSL_VERIFYRESULT(3)\fP
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.IP CURLINFO_SSL_ENGINES
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A list of OpenSSL crypto engines.
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See \fICURLINFO_SSL_ENGINES(3)\fP
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.IP CURLINFO_CONTENT_LENGTH_DOWNLOAD
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(Deprecated) Content length from the Content\-Length header.
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See \fICURLINFO_CONTENT_LENGTH_DOWNLOAD(3)\fP
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.IP CURLINFO_CONTENT_LENGTH_DOWNLOAD_T
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Content length from the Content\-Length header.
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See \fICURLINFO_CONTENT_LENGTH_DOWNLOAD_T(3)\fP
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.IP CURLINFO_CONTENT_LENGTH_UPLOAD
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(Deprecated) Upload size. See \fICURLINFO_CONTENT_LENGTH_UPLOAD(3)\fP
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.IP CURLINFO_CONTENT_LENGTH_UPLOAD_T
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Upload size. See \fICURLINFO_CONTENT_LENGTH_UPLOAD_T(3)\fP
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.IP CURLINFO_CONTENT_TYPE
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Content type from the Content\-Type header.
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See \fICURLINFO_CONTENT_TYPE(3)\fP
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.IP CURLINFO_RETRY_AFTER
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The value from the Retry\-After header.
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See \fICURLINFO_RETRY_AFTER(3)\fP
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.IP CURLINFO_PRIVATE
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User\(aqs private data pointer.
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See \fICURLINFO_PRIVATE(3)\fP
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.IP CURLINFO_HTTPAUTH_AVAIL
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Available HTTP authentication methods.
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See \fICURLINFO_HTTPAUTH_AVAIL(3)\fP
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.IP CURLINFO_PROXYAUTH_AVAIL
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Available HTTP proxy authentication methods.
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See \fICURLINFO_PROXYAUTH_AVAIL(3)\fP
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.IP CURLINFO_OS_ERRNO
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The errno from the last failure to connect.
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See \fICURLINFO_OS_ERRNO(3)\fP
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.IP CURLINFO_NUM_CONNECTS
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Number of new successful connections used for previous transfer.
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See \fICURLINFO_NUM_CONNECTS(3)\fP
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.IP CURLINFO_PRIMARY_IP
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Destination IP address of the last connection.
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See \fICURLINFO_PRIMARY_IP(3)\fP
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.IP CURLINFO_PRIMARY_PORT
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Destination port of the last connection.
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See \fICURLINFO_PRIMARY_PORT(3)\fP
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.IP CURLINFO_LOCAL_IP
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Source IP address of the last connection.
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See \fICURLINFO_LOCAL_IP(3)\fP
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.IP CURLINFO_LOCAL_PORT
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Source port number of the last connection.
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See \fICURLINFO_LOCAL_PORT(3)\fP
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.IP CURLINFO_COOKIELIST
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List of all known cookies.
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See \fICURLINFO_COOKIELIST(3)\fP
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.IP CURLINFO_LASTSOCKET
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(Deprecated) Last socket used.
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See \fICURLINFO_LASTSOCKET(3)\fP
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.IP CURLINFO_ACTIVESOCKET
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The session\(aqs active socket.
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See \fICURLINFO_ACTIVESOCKET(3)\fP
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.IP CURLINFO_FTP_ENTRY_PATH
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The entry path after logging in to an FTP server.
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See \fICURLINFO_FTP_ENTRY_PATH(3)\fP
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.IP CURLINFO_CAPATH
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Get the default value for \fICURLOPT_CAPATH(3)\fP.
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See \fICURLINFO_CAPATH(3)\fP
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.IP CURLINFO_CAINFO
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Get the default value for \fICURLOPT_CAINFO(3)\fP.
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See \fICURLINFO_CAINFO(3)\fP
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.IP CURLINFO_CERTINFO
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Certificate chain.
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See \fICURLINFO_CERTINFO(3)\fP
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.IP CURLINFO_TLS_SSL_PTR
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TLS session info that can be used for further processing.
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See \fICURLINFO_TLS_SSL_PTR(3)\fP
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.IP CURLINFO_TLS_SESSION
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TLS session info that can be used for further processing. See
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\fICURLINFO_TLS_SESSION(3)\fP. Deprecated option, use
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\fICURLINFO_TLS_SSL_PTR(3)\fP instead!
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.IP CURLINFO_CONDITION_UNMET
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Whether or not a time conditional was met or 304 HTTP response.
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See \fICURLINFO_CONDITION_UNMET(3)\fP
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.IP CURLINFO_RTSP_SESSION_ID
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RTSP session ID.
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See \fICURLINFO_RTSP_SESSION_ID(3)\fP
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.IP CURLINFO_RTSP_CLIENT_CSEQ
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The RTSP client CSeq that is expected next.
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See \fICURLINFO_RTSP_CLIENT_CSEQ(3)\fP
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.IP CURLINFO_RTSP_SERVER_CSEQ
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The RTSP server CSeq that is expected next.
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See \fICURLINFO_RTSP_SERVER_CSEQ(3)\fP
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.IP CURLINFO_RTSP_CSEQ_RECV
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RTSP CSeq last received.
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See \fICURLINFO_RTSP_CSEQ_RECV(3)\fP
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.IP CURLINFO_PROTOCOL
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(Deprecated) The protocol used for the connection. (Added in 7.52.0)
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See \fICURLINFO_PROTOCOL(3)\fP
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.IP CURLINFO_SCHEME
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The scheme used for the connection. (Added in 7.52.0)
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See \fICURLINFO_SCHEME(3)\fP
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.IP CURLINFO_CONN_ID
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The ID of the last connection used by the transfer. (Added in 8.2.0)
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See \fICURLINFO_CONN_ID(3)\fP
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.IP CURLINFO_XFER_ID
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The ID of the transfer. (Added in 8.2.0)
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See \fICURLINFO_XFER_ID(3)\fP
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.SH TIMES
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An overview of the time values available from \fIcurl_easy_getinfo(3)\fP
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.nf
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curl_easy_perform()
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|--QUEUE
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|--|--NAMELOOKUP
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|--|--|--CONNECT
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|--|--|--|--APPCONNECT
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|--|--|--|--|--PRETRANSFER
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|--|--|--|--|--|--STARTTRANSFER
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|--|--|--|--|--|--|--TOTAL
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|--|--|--|--|--|--|--REDIRECT
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.fi
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.IP CURLINFO_QUEUE_TIME
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\fICURLINFO_QUEUE_TIME_T(3)\fP. The time during which the transfer was held in a
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waiting queue before it could start for real. (Added in 8.6.0)
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.IP CURLINFO_NAMELOOKUP_TIME
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\fICURLINFO_NAMELOOKUP_TIME(3)\fP and \fICURLINFO_NAMELOOKUP_TIME_T(3)\fP. The time it
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took from the start until the name resolving was completed.
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.IP CURLINFO_CONNECT_TIME
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\fICURLINFO_CONNECT_TIME(3)\fP and \fICURLINFO_CONNECT_TIME_T(3)\fP. The time it took from
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the start until the connect to the remote host (or proxy) was completed.
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.IP CURLINFO_APPCONNECT_TIME
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\fICURLINFO_APPCONNECT_TIME(3)\fP and \fICURLINFO_APPCONNECT_TIME_T(3)\fP. The time it
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took from the start until the SSL connect/handshake with the remote host was
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completed. (Added in 7.19.0) The latter is the integer version (measuring
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microseconds). (Added in 7.60.0)
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.IP CURLINFO_PRETRANSFER_TIME
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\fICURLINFO_PRETRANSFER_TIME(3)\fP and \fICURLINFO_PRETRANSFER_TIME_T(3)\fP. The time it
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took from the start until the file transfer is just about to begin. This
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includes all pre\-transfer commands and negotiations that are specific to the
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particular protocol(s) involved.
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.IP CURLINFO_STARTTRANSFER_TIME
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\fICURLINFO_STARTTRANSFER_TIME(3)\fP and \fICURLINFO_STARTTRANSFER_TIME_T(3)\fP. The time
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it took from the start until the first byte is received by libcurl.
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.IP CURLINFO_TOTAL_TIME
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\fICURLINFO_TOTAL_TIME(3)\fP and \fICURLINFO_TOTAL_TIME_T(3)\fP. Total time
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of the previous request.
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.IP CURLINFO_REDIRECT_TIME
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\fICURLINFO_REDIRECT_TIME(3)\fP and \fICURLINFO_REDIRECT_TIME_T(3)\fP. The time it took
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for all redirection steps include name lookup, connect, pretransfer and
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transfer before final transaction was started. So, this is zero if no
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redirection took place.
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://www.example.com/");
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res = curl_easy_perform(curl);
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if(CURLE_OK == res) {
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char *ct;
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/* ask for the content-type */
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res = curl_easy_getinfo(curl, CURLINFO_CONTENT_TYPE, &ct);
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if((CURLE_OK == res) && ct)
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printf("We received Content-Type: %s\\n", ct);
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}
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/* always cleanup */
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curl_easy_cleanup(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.4.1
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.SH RETURN VALUE
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If the operation was successful, CURLE_OK is returned. Otherwise an
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appropriate error code is returned.
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.SH SEE ALSO
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.BR curl_easy_setopt (3)
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