Linux Manuals

CURLOPT_MAIL_FROM – SMTP sender address Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAIL_FROM, char *from); Description Pass a pointer to a zero terminated string as parameter. This should be used to specify the sender’s email address when sending SMTP mail with libcurl. An originator email address should be specified with angled brackets (<>) around it, which…

CURLOPT_MAIL_AUTH – SMTP authentication address Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAIL_AUTH, char *auth); Description Pass a pointer to a zero terminated string as parameter. This will be used to specify the authentication address (identity) of a submitted message that is being relayed to another server. This optional parameter allows co-operating agents in a trusted…

CURLOPT_LOW_SPEED_TIME – set low speed limit time period Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOW_SPEED_TIME, long speedtime); Description Pass a long as parameter. It contains the time in number seconds that the transfer speed should be below the CURLOPT_LOW_SPEED_LIMIT(3) for the library to consider it too slow and abort. Default 0, disabled Protocols All Example…

CURLOPT_LOW_SPEED_LIMIT – set low speed limit in bytes per second Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOW_SPEED_LIMIT, long speedlimit); Description Pass a long as parameter. It contains the average transfer speed in bytes per second that the transfer should be below during CURLOPT_LOW_SPEED_TIME(3) seconds for libcurl to consider it to be too slow and abort….

CURLOPT_LOGIN_OPTIONS – set login options Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOGIN_OPTIONS, char *options); Description Pass a char * as parameter, which should be pointing to the zero terminated options string to use for the transfer. For more information about the login options please see RFC2384, RFC5092 and IETF draft draft-earhart-url-smtp-00.txt CURLOPT_LOGIN_OPTIONS(3) can be used…

CURLOPT_LOCALPORTRANGE – number of additional local ports to try Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORTRANGE,                     long range); Description Pass a long. The range argument is the number of attempts libcurl will make to find a working local port number. It starts with the given CURLOPT_LOCALPORT(3) and adds one to the number for each retry….

CURLOPT_LOCALPORT – set local port number to use for socket Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORT, long port); Description Pass a long. This sets the local port number of the socket used for the connection. This can be used in combination with CURLOPT_INTERFACE(3) and you are recommended to use CURLOPT_LOCALPORTRANGE(3) as well when this…

CURLOPT_KRBLEVEL – set FTP kerberos security level Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_KRBLEVEL, char *level); Description Pass a char * as parameter. Set the kerberos security level for FTP; this also enables kerberos awareness. This is a string that should match one of the following: ‘clear’, ‘safe’, ‘confidential’ or ‘private’. If the string is…

CURLOPT_KEYPASSWD – set passphrase to private key Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_KEYPASSWD, char *pwd); Description Pass a pointer to a zero terminated string as parameter. It will be used as the password required to use the CURLOPT_SSLKEY(3) or CURLOPT_SSH_PRIVATE_KEYFILE(3) private key. You never needed a pass phrase to load a certificate but you…

CURLOPT_ISSUERCERT – issuer SSL certificate filename Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ISSUERCERT, char *file); Description Pass a char * to a zero terminated string naming a file holding a CA certificate in PEM format. If the option is set, an additional check against the peer certificate is performed to verify the issuer is indeed…

CURLOPT_IPRESOLVE – specify which IP protocol version to use Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IPRESOLVE, long resolve); Description Allows an application to select what kind of IP addresses to use when resolving host names. This is only interesting when using host names that resolve addresses using more than one version of IP. The allowed…

CURLOPT_IOCTLFUNCTION – callback for I/O operations Synopsis #include <curl/curl.h> typedef enum { CURLIOE_OK, /* I/O operation successful */ CURLIOE_UNKNOWNCMD, /* command was unknown to callback */ CURLIOE_FAILRESTART, /* failed to restart the read */ CURLIOE_LAST /* never use */ } curlioerr; typedef enum { CURLIOCMD_NOP, /* no operation */ CURLIOCMD_RESTARTREAD, /* restart the read stream…

CURLOPT_IOCTLDATA – custom pointer passed to I/O callback Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IOCTLDATA, void *pointer); Description Pass the pointer that will be untouched by libcurl and passed as the 3rd argument in the ioctl callback set with CURLOPT_IOCTLFUNCTION(3). Default By default, the value of this parameter is NULL. Protocols Used with HTTP Example…

CURLOPT_INTERLEAVEFUNCTION – callback function for RTSP interleaved data Synopsis #include <curl/curl.h> size_t interleave_callback(void *ptr, size_t size, size_t nmemb, void *userdata); CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INTERLEAVEFUNCTION, interleave_callback); Description Pass a pointer to your callback function, which should match the prototype shown above. This callback function gets called by libcurl as soon as it has received interleaved RTP…

CURLOPT_INTERLEAVEDATA – custom pointer to RTSP interleave callback Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INTERLEAVEDATA, void *pointer); Description This is the userdata pointer that will be passed to CURLOPT_INTERLEAVEFUNCTION(3) when interleaved RTP data is received. Default NULL Protocols RTSP Example TODO Availability Added in 7.20.0 Return Value Returns CURLE_OK if the option is supported, and…

CURLOPT_INTERFACE – source interface for outgoing traffic Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INTERFACE, char *interface); Description Pass a char * as parameter. This sets the interface name to use as outgoing network interface. The name can be an interface name, an IP address, or a host name. If the parameter starts with "if!" then…

CURLOPT_INFILESIZE_LARGE – set size of the input file to send off Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INFILESIZE_LARGE, curl_off_t filesize); Description When uploading a file to a remote site, filesize should be used to tell libcurl what the expected size of the input file is. This value must be passed as a curl_off_t. For uploading…

CURLOPT_INFILESIZE – set size of the input file to send off Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_INFILESIZE, long filesize); Description When uploading a file to a remote site, filesize should be used to tell libcurl what the expected size of the input file is. This value must be passed as a long. See also…

CURLOPT_IGNORE_CONTENT_LENGTH – ignore Content-Length in HTTP response Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_IGNORE_CONTENT_LENGTH, long ignore); Description If ignore is set to 1, ignore the Content-Length header in the HTTP response. This is useful for Apache 1.x (and similar servers) which will report incorrect content length for files over 2 gigabytes. If this option is…

CURLOPT_HTTP_VERSION – specify HTTP protocol version to use Synopsis #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTP_VERSION, long version); Description Pass version a long, set to one of the values described below. They force libcurl to use the specific HTTP versions. This is not sensible to do unless you have a good reason. You have to set…