section 3 · Library functions 📚

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C (continued)

CURLINFO_COOKIELIST(3)all known cookies✨
CURLINFO_EARLYDATA_SENT_T(3)number of bytes sent as TLS early data✨
CURLINFO_EFFECTIVE_METHOD(3)last used HTTP request method✨
CURLINFO_EFFECTIVE_URL(3)last used URL✨
CURLINFO_FILETIME(3)remote time of the retrieved document✨
CURLINFO_FILETIME_T(3)remote time of the retrieved resource✨
CURLINFO_FTP_ENTRY_PATH(3)entry path in FTP server✨
CURLINFO_HEADER_SIZE(3)size of response headers✨
CURLINFO_HTTP_CONNECTCODE(3)CONNECT response code✨
CURLINFO_HTTP_VERSION(3)HTTP version used in the transfer✨
CURLINFO_HTTPAUTH_AVAIL(3)available HTTP authentication methods✨
CURLINFO_HTTPAUTH_USED(3)used HTTP authentication method✨
CURLINFO_LASTSOCKET(3)last socket used✨
CURLINFO_LOCAL_IP(3)local IP address of last connection✨
CURLINFO_LOCAL_PORT(3)latest local port number✨
CURLINFO_NAMELOOKUP_TIME(3)name lookup time✨
CURLINFO_NAMELOOKUP_TIME_T(3)name lookup time in microseconds✨
CURLINFO_NUM_CONNECTS(3)number of created connections✨
CURLINFO_OS_ERRNO(3)errno number from last connect failure✨
CURLINFO_POSTTRANSFER_TIME_T(3)time to last byte sent✨
CURLINFO_PRETRANSFER_TIME(3)time to transfer start✨
CURLINFO_PRETRANSFER_TIME_T(3)time to transfer start✨
CURLINFO_PRIMARY_IP(3)IP address of last connection✨
CURLINFO_PRIMARY_PORT(3)last destination port number✨
CURLINFO_PRIVATE(3)private pointer✨
CURLINFO_PROTOCOL(3)URL scheme used in transfer✨
CURLINFO_PROXY_ERROR(3)detailed (SOCKS) proxy error✨
CURLINFO_PROXY_SSL_VERIFYRESULT(3)result of proxy certificate verification✨
CURLINFO_PROXYAUTH_AVAIL(3)HTTP proxy authentication methods✨
CURLINFO_PROXYAUTH_USED(3)HTTP proxy authentication method✨
CURLINFO_QUEUE_TIME_T(3)time this transfer was queued✨
CURLINFO_REDIRECT_COUNT(3)number of redirects✨
CURLINFO_REDIRECT_TIME(3)time for all redirection steps✨
CURLINFO_REDIRECT_TIME_T(3)time for all redirection steps✨
CURLINFO_REDIRECT_URL(3)URL a redirect would go to✨
CURLINFO_REFERER(3)used HTTP referrer request header✨
CURLINFO_REQUEST_SIZE(3)size of sent request✨
CURLINFO_RESPONSE_CODE(3)last response code✨
CURLINFO_RETRY_AFTER(3)returns the Retry-After retry delay✨
CURLINFO_RTSP_CLIENT_CSEQ(3)next RTSP client CSeq✨
CURLINFO_RTSP_CSEQ_RECV(3)last received RTSP CSeq✨
CURLINFO_RTSP_SERVER_CSEQ(3)next RTSP server CSeq✨
CURLINFO_RTSP_SESSION_ID(3)RTSP session ID✨
CURLINFO_SCHEME(3)URL scheme used in transfer✨
CURLINFO_SIZE_DELIVERED(3)number of delivered bytes✨
CURLINFO_SIZE_DOWNLOAD(3)number of downloaded bytes✨
CURLINFO_SIZE_DOWNLOAD_T(3)number of downloaded bytes✨
CURLINFO_SIZE_UPLOAD(3)number of uploaded bytes✨
CURLINFO_SIZE_UPLOAD_T(3)number of uploaded bytes✨
CURLINFO_SPEED_DOWNLOAD(3)download speed✨
CURLINFO_SPEED_DOWNLOAD_T(3)download speed✨
CURLINFO_SPEED_UPLOAD(3)upload speed✨
CURLINFO_SPEED_UPLOAD_T(3)upload speed✨
CURLINFO_SSL_ENGINES(3)an slist of OpenSSL crypto-engines✨
CURLINFO_SSL_VERIFYRESULT(3)result of the certificate verification✨
CURLINFO_STARTTRANSFER_TIME(3)time to first byte received✨
CURLINFO_STARTTRANSFER_TIME_T(3)time to first byte received✨
CURLINFO_TLS_SESSION(3)TLS session info✨
CURLINFO_TLS_SSL_PTR(3)TLS session info✨
CURLINFO_TOTAL_TIME(3)total time of previous transfer✨
CURLINFO_TOTAL_TIME_T(3)total time of previous transfer✨
CURLINFO_USED_PROXY(3)whether the transfer used a proxy✨
CURLINFO_XFER_ID(3)ID of the transfer✨
CURLMINFO_XFERS_ADDED(3)Cumulative number of all easy handles added✨
CURLMINFO_XFERS_CURRENT(3)Number of easy handles currently added✨
CURLMINFO_XFERS_DONE(3)Number of finished unprocessed easy handles✨
CURLMINFO_XFERS_PENDING(3)Number of easy handles waiting to start✨
CURLMINFO_XFERS_RUNNING(3)Number of easy handles currently running✨
CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE(3)chunk length threshold for pipelining✨
CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE(3)size threshold for pipelining penalty✨
CURLMOPT_MAX_CONCURRENT_STREAMS(3)max concurrent streams for http2✨
CURLMOPT_MAX_HOST_CONNECTIONS(3)max number of connections to a single host✨
CURLMOPT_MAX_PIPELINE_LENGTH(3)maximum number of requests in a pipeline✨
CURLMOPT_MAX_TOTAL_CONNECTIONS(3)max simultaneously open connections✨
CURLMOPT_MAXCONNECTS(3)size of connection cache✨
CURLMOPT_NETWORK_CHANGED(3)signal network changed✨
CURLMOPT_NOTIFYDATA(3)custom pointer passed to the notification callback✨
CURLMOPT_NOTIFYFUNCTION(3)callback receiving notifications✨
CURLMOPT_PIPELINING(3)enable HTTP multiplexing✨
CURLMOPT_PIPELINING_SERVER_BL(3)pipelining server block list✨
CURLMOPT_PIPELINING_SITE_BL(3)pipelining host block list✨
CURLMOPT_PUSHDATA(3)pointer to pass to push callback✨
CURLMOPT_PUSHFUNCTION(3)callback that approves or denies server pushes✨
CURLMOPT_QUICK_EXIT(3)allow libcurl to exit quickly✨
CURLMOPT_RESOLVE_THREADS_MAX(3)max threads for threaded DNS resolver✨
CURLMOPT_SOCKETDATA(3)custom pointer passed to the socket callback✨
CURLMOPT_SOCKETFUNCTION(3)callback informed about what to wait for✨
CURLMOPT_TIMERDATA(3)custom pointer to pass to timer callback✨
CURLMOPT_TIMERFUNCTION(3)callback to receive timeout values✨
CURLOPT_ABSTRACT_UNIX_SOCKET(3)abstract Unix domain socket✨
CURLOPT_ACCEPT_ENCODING(3)automatic decompression of HTTP downloads✨
CURLOPT_ACCEPTTIMEOUT_MS(3)timeout waiting for FTP server to connect back✨
CURLOPT_ADDRESS_SCOPE(3)scope id for IPv6 addresses✨
CURLOPT_ALTSVC(3)alt-svc cache filename✨
CURLOPT_ALTSVC_CTRL(3)control alt-svc behavior✨
CURLOPT_APPEND(3)append to the remote file✨
CURLOPT_AUTOREFERER(3)automatically update the referer header✨
CURLOPT_AWS_SIGV4(3)V4 signature✨
CURLOPT_BUFFERSIZE(3)receive buffer size✨
CURLOPT_CA_CACHE_TIMEOUT(3)life-time for cached certificate stores✨
CURLOPT_CAINFO(3)path to Certificate Authority (CA) bundle✨
CURLOPT_CAINFO_BLOB(3)Certificate Authority (CA) bundle in PEM format✨
CURLOPT_CAPATH(3)directory holding CA certificates✨
CURLOPT_CERTINFO(3)request SSL certificate information✨
CURLOPT_CHUNK_BGN_FUNCTION(3)callback before a transfer with FTP wildcard match✨
CURLOPT_CHUNK_DATA(3)pointer passed to the FTP chunk callbacks✨
CURLOPT_CHUNK_END_FUNCTION(3)callback after a transfer with FTP wildcard match✨
CURLOPT_CLOSESOCKETDATA(3)pointer passed to the socket close callback✨
CURLOPT_CLOSESOCKETFUNCTION(3)callback to socket close replacement✨
CURLOPT_CONNECT_ONLY(3)stop when connected to target server✨
CURLOPT_CONNECT_TO(3)connect to another host and port instead✨
CURLOPT_CONNECTTIMEOUT(3)timeout for the connect phase✨
CURLOPT_CONNECTTIMEOUT_MS(3)timeout for the connect phase✨
CURLOPT_CONV_FROM_NETWORK_FUNCTION(3)convert data from network to host encoding✨
CURLOPT_CONV_FROM_UTF8_FUNCTION(3)convert data from UTF8 to host encoding✨
CURLOPT_CONV_TO_NETWORK_FUNCTION(3)convert data to network from host encoding✨
CURLOPT_COOKIE(3)HTTP Cookie header✨
CURLOPT_COOKIEFILE(3)filename to read cookies from✨
CURLOPT_COOKIEJAR(3)filename to store cookies to✨
CURLOPT_COOKIELIST(3)add to or manipulate cookies held in memory✨
CURLOPT_COOKIESESSION(3)start a new cookie session✨
CURLOPT_COPYPOSTFIELDS(3)have libcurl copy data to POST✨
CURLOPT_CRLF(3)CRLF conversion✨
CURLOPT_CRLFILE(3)Certificate Revocation List file✨
CURLOPT_CURLU(3)URL in URL handle format✨
CURLOPT_CUSTOMREQUEST(3)custom request method✨
CURLOPT_DEBUGDATA(3)pointer passed to the debug callback✨
CURLOPT_DEBUGFUNCTION(3)debug callback✨
CURLOPT_DEFAULT_PROTOCOL(3)default protocol to use if the URL is missing a scheme name✨
CURLOPT_DIRLISTONLY(3)ask for names only in a directory listing✨
CURLOPT_DISALLOW_USERNAME_IN_URL(3)disallow specifying username in the URL✨
CURLOPT_DNS_CACHE_TIMEOUT(3)life-time for DNS cache entries✨
CURLOPT_DNS_INTERFACE(3)interface to speak DNS over✨
CURLOPT_DNS_LOCAL_IP4(3)IPv4 address to bind DNS resolves to✨
CURLOPT_DNS_LOCAL_IP6(3)IPv6 address to bind DNS resolves to✨
CURLOPT_DNS_SERVERS(3)DNS servers to use✨
CURLOPT_DNS_SHUFFLE_ADDRESSES(3)shuffle IP addresses for hostname✨
CURLOPT_DNS_USE_GLOBAL_CACHE(3)global DNS cache✨
CURLOPT_DOH_SSL_VERIFYHOST(3)verify the hostname in the DoH SSL certificate✨
CURLOPT_DOH_SSL_VERIFYPEER(3)verify the DoH SSL certificate✨
CURLOPT_DOH_SSL_VERIFYSTATUS(3)verify the DoH SSL certificate's status✨
CURLOPT_DOH_URL(3)provide the DNS-over-HTTPS URL✨
CURLOPT_ECH(3)configuration for Encrypted Client Hello✨
CURLOPT_EGDSOCKET(3)EGD socket path✨
CURLOPT_ERRORBUFFER(3)error buffer for error messages✨
CURLOPT_EXPECT_100_TIMEOUT_MS(3)timeout for Expect: 100-continue response✨
CURLOPT_FAILONERROR(3)request failure on HTTP response >= 400✨
CURLOPT_FILETIME(3)get the modification time of the remote resource✨
CURLOPT_FNMATCH_DATA(3)pointer passed to the fnmatch callback✨
CURLOPT_FNMATCH_FUNCTION(3)wildcard match callback✨
CURLOPT_FOLLOWLOCATION(3)follow HTTP 3xx redirects✨
CURLOPT_FORBID_REUSE(3)make connection get closed at once after use✨
CURLOPT_FRESH_CONNECT(3)force a new connection to be used✨
CURLOPT_FTP_ACCOUNT(3)account info for FTP✨
CURLOPT_FTP_ALTERNATIVE_TO_USER(3)command to use instead of USER with FTP✨
CURLOPT_FTP_CREATE_MISSING_DIRS(3)create missing directories for FTP and SFTP✨
CURLOPT_FTP_FILEMETHOD(3)select directory traversing method for FTP✨
CURLOPT_FTP_RESPONSE_TIMEOUT(3)time allowed to wait for FTP response✨
CURLOPT_FTP_SKIP_PASV_IP(3)ignore the IP address in the PASV response✨
CURLOPT_FTP_SSL_CCC(3)switch off SSL again with FTP after auth✨
CURLOPT_FTP_USE_EPRT(3)use EPRT for FTP✨
CURLOPT_FTP_USE_EPSV(3)use EPSV for FTP✨
CURLOPT_FTP_USE_PRET(3)use PRET for FTP✨
CURLOPT_FTPPORT(3)make FTP transfer active✨
CURLOPT_FTPSSLAUTH(3)order in which to attempt TLS vs SSL✨
CURLOPT_GSSAPI_DELEGATION(3)allowed GSS-API delegation✨
CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS(3)timing of connect attempts✨
CURLOPT_HAPROXY_CLIENT_IP(3)set HAProxy PROXY protocol client IP✨
CURLOPT_HAPROXYPROTOCOL(3)send HAProxy PROXY protocol v1 header✨
CURLOPT_HEADER(3)pass headers to the data stream✨
CURLOPT_HEADERDATA(3)pointer to pass to header callback✨
CURLOPT_HEADERFUNCTION(3)callback that receives header data✨
CURLOPT_HEADEROPT(3)send HTTP headers to both proxy and host or separately✨
CURLOPT_HSTS(3)HSTS cache filename✨
CURLOPT_HSTS_CTRL(3)control HSTS behavior✨
CURLOPT_HSTSREADDATA(3)pointer passed to the HSTS read callback✨
CURLOPT_HSTSREADFUNCTION(3)read callback for HSTS hosts✨
CURLOPT_HSTSWRITEDATA(3)pointer passed to the HSTS write callback✨
CURLOPT_HSTSWRITEFUNCTION(3)write callback for HSTS hosts✨
CURLOPT_HTTP09_ALLOWED(3)allow HTTP/0.9 response✨
CURLOPT_HTTP200ALIASES(3)alternative matches for HTTP 200 OK✨
CURLOPT_HTTP_CONTENT_DECODING(3)HTTP content decoding control✨
CURLOPT_HTTP_TRANSFER_DECODING(3)HTTP transfer decoding control✨
CURLOPT_HTTP_VERSION(3)HTTP protocol version to use✨
CURLOPT_HTTPAUTH(3)HTTP server authentication methods to try✨
CURLOPT_HTTPGET(3)ask for an HTTP GET request✨
CURLOPT_HTTPHEADER(3)set of HTTP headers✨
CURLOPT_HTTPPOST(3)multipart formpost content✨
CURLOPT_HTTPPROXYTUNNEL(3)tunnel through HTTP proxy✨
CURLOPT_HTTPSIG_ALGORITHM(3)RFC 9421 HTTP Message Signatures algorithm✨
CURLOPT_HTTPSIG_HEADERS(3)components to sign for HTTP Message Signatures✨
CURLOPT_HTTPSIG_KEY(3)hex-encoded key for HTTP Message Signatures✨
CURLOPT_HTTPSIG_KEYID(3)key identifier for HTTP Message Signatures✨
CURLOPT_IGNORE_CONTENT_LENGTH(3)ignore content length✨
CURLOPT_INFILESIZE(3)size of the input file to send off✨
CURLOPT_INFILESIZE_LARGE(3)size of the input file to send off✨
CURLOPT_INTERFACE(3)source interface for outgoing traffic✨
CURLOPT_INTERLEAVEDATA(3)pointer passed to RTSP interleave callback✨
CURLOPT_INTERLEAVEFUNCTION(3)callback for RTSP interleaved data✨
CURLOPT_IOCTLDATA(3)pointer passed to I/O callback✨