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| .TH curl_easy_setopt 3 "25 Jun 2014" "libcurl 7.38.0" "libcurl Manual" |
| .SH NAME |
| curl_easy_setopt \- set options for a curl easy handle |
| .SH SYNOPSIS |
| #include <curl/curl.h> |
| |
| CURLcode curl_easy_setopt(CURL *handle, CURLoption option, parameter); |
| .SH DESCRIPTION |
| \fIcurl_easy_setopt(3)\fP is used to tell libcurl how to behave. By setting |
| the appropriate options, the application can change libcurl's behavior. All |
| options are set with an \fIoption\fP followed by a \fIparameter\fP. That |
| parameter can be a \fBlong\fP, a \fBfunction pointer\fP, an \fBobject |
| pointer\fP or a \fBcurl_off_t\fP, depending on what the specific option |
| expects. Read this manual carefully as bad input values may cause libcurl to |
| behave badly! You can only set one option in each function call. A typical |
| application uses many \fIcurl_easy_setopt(3)\fP calls in the setup phase. |
| |
| Options set with this function call are valid for all forthcoming transfers |
| performed using this \fIhandle\fP. The options are not in any way reset |
| between transfers, so if you want subsequent transfers with different options, |
| you must change them between the transfers. You can optionally reset all |
| options back to internal default with \fIcurl_easy_reset(3)\fP. |
| |
| Strings passed to libcurl as 'char *' arguments, are copied by the library; |
| thus the string storage associated to the pointer argument may be overwritten |
| after \fIcurl_easy_setopt(3)\fP returns. The only exception to this rule is |
| really \fICURLOPT_POSTFIELDS(3)\fP, but the alternative that copies the string |
| \fICURLOPT_COPYPOSTFIELDS(3)\fP has some usage characteristics you need to |
| read up on. This function does not accept input strings longer than |
| \fBCURL_MAX_INPUT_LENGTH\fP (8 MB). |
| |
| The order in which the options are set does not matter. |
| |
| Before version 7.17.0, strings were not copied. Instead the user was forced |
| keep them available until libcurl no longer needed them. |
| |
| The \fIhandle\fP is the return code from a \fIcurl_easy_init(3)\fP or |
| \fIcurl_easy_duphandle(3)\fP call. |
| .SH BEHAVIOR OPTIONS |
| .IP CURLOPT_VERBOSE |
| Display verbose information. See \fICURLOPT_VERBOSE(3)\fP |
| .IP CURLOPT_HEADER |
| Include the header in the body output. See \fICURLOPT_HEADER(3)\fP |
| .IP CURLOPT_NOPROGRESS |
| Shut off the progress meter. See \fICURLOPT_NOPROGRESS(3)\fP |
| .IP CURLOPT_NOSIGNAL |
| Do not install signal handlers. See \fICURLOPT_NOSIGNAL(3)\fP |
| .IP CURLOPT_WILDCARDMATCH |
| Transfer multiple files according to a file name pattern. See \fICURLOPT_WILDCARDMATCH(3)\fP |
| .SH CALLBACK OPTIONS |
| .IP CURLOPT_WRITEFUNCTION |
| Callback for writing data. See \fICURLOPT_WRITEFUNCTION(3)\fP |
| .IP CURLOPT_WRITEDATA |
| Data pointer to pass to the write callback. See \fICURLOPT_WRITEDATA(3)\fP |
| .IP CURLOPT_READFUNCTION |
| Callback for reading data. See \fICURLOPT_READFUNCTION(3)\fP |
| .IP CURLOPT_READDATA |
| Data pointer to pass to the read callback. See \fICURLOPT_READDATA(3)\fP |
| .IP CURLOPT_IOCTLFUNCTION |
| Callback for I/O operations. See \fICURLOPT_IOCTLFUNCTION(3)\fP |
| .IP CURLOPT_IOCTLDATA |
| Data pointer to pass to the I/O callback. See \fICURLOPT_IOCTLDATA(3)\fP |
| .IP CURLOPT_SEEKFUNCTION |
| Callback for seek operations. See \fICURLOPT_SEEKFUNCTION(3)\fP |
| .IP CURLOPT_SEEKDATA |
| Data pointer to pass to the seek callback. See \fICURLOPT_SEEKDATA(3)\fP |
| .IP CURLOPT_SOCKOPTFUNCTION |
| Callback for sockopt operations. See \fICURLOPT_SOCKOPTFUNCTION(3)\fP |
| .IP CURLOPT_SOCKOPTDATA |
| Data pointer to pass to the sockopt callback. See \fICURLOPT_SOCKOPTDATA(3)\fP |
| .IP CURLOPT_OPENSOCKETFUNCTION |
| Callback for socket creation. See \fICURLOPT_OPENSOCKETFUNCTION(3)\fP |
| .IP CURLOPT_OPENSOCKETDATA |
| Data pointer to pass to the open socket callback. See \fICURLOPT_OPENSOCKETDATA(3)\fP |
| .IP CURLOPT_CLOSESOCKETFUNCTION |
| Callback for closing socket. See \fICURLOPT_CLOSESOCKETFUNCTION(3)\fP |
| .IP CURLOPT_CLOSESOCKETDATA |
| Data pointer to pass to the close socket callback. See \fICURLOPT_CLOSESOCKETDATA(3)\fP |
| .IP CURLOPT_PROGRESSFUNCTION |
| OBSOLETE callback for progress meter. See \fICURLOPT_PROGRESSFUNCTION(3)\fP |
| .IP CURLOPT_PROGRESSDATA |
| Data pointer to pass to the progress meter callback. See \fICURLOPT_PROGRESSDATA(3)\fP |
| .IP CURLOPT_XFERINFOFUNCTION |
| Callback for progress meter. See \fICURLOPT_XFERINFOFUNCTION(3)\fP |
| .IP CURLOPT_XFERINFODATA |
| Data pointer to pass to the progress meter callback. See \fICURLOPT_XFERINFODATA(3)\fP |
| .IP CURLOPT_HEADERFUNCTION |
| Callback for writing received headers. See \fICURLOPT_HEADERFUNCTION(3)\fP |
| .IP CURLOPT_HEADERDATA |
| Data pointer to pass to the header callback. See \fICURLOPT_HEADERDATA(3)\fP |
| .IP CURLOPT_DEBUGFUNCTION |
| Callback for debug information. See \fICURLOPT_DEBUGFUNCTION(3)\fP |
| .IP CURLOPT_DEBUGDATA |
| Data pointer to pass to the debug callback. See \fICURLOPT_DEBUGDATA(3)\fP |
| .IP CURLOPT_SSL_CTX_FUNCTION |
| Callback for SSL context logic. See \fICURLOPT_SSL_CTX_FUNCTION(3)\fP |
| .IP CURLOPT_SSL_CTX_DATA |
| Data pointer to pass to the SSL context callback. See \fICURLOPT_SSL_CTX_DATA(3)\fP |
| .IP CURLOPT_CONV_TO_NETWORK_FUNCTION |
| Callback for code base conversion. See \fICURLOPT_CONV_TO_NETWORK_FUNCTION(3)\fP |
| .IP CURLOPT_CONV_FROM_NETWORK_FUNCTION |
| Callback for code base conversion. See \fICURLOPT_CONV_FROM_NETWORK_FUNCTION(3)\fP |
| .IP CURLOPT_CONV_FROM_UTF8_FUNCTION |
| Callback for code base conversion. See \fICURLOPT_CONV_FROM_UTF8_FUNCTION(3)\fP |
| .IP CURLOPT_INTERLEAVEFUNCTION |
| Callback for RTSP interleaved data. See \fICURLOPT_INTERLEAVEFUNCTION(3)\fP |
| .IP CURLOPT_INTERLEAVEDATA |
| Data pointer to pass to the RTSP interleave callback. See \fICURLOPT_INTERLEAVEDATA(3)\fP |
| .IP CURLOPT_CHUNK_BGN_FUNCTION |
| Callback for wildcard download start of chunk. See \fICURLOPT_CHUNK_BGN_FUNCTION(3)\fP |
| .IP CURLOPT_CHUNK_END_FUNCTION |
| Callback for wildcard download end of chunk. See \fICURLOPT_CHUNK_END_FUNCTION(3)\fP |
| .IP CURLOPT_CHUNK_DATA |
| Data pointer to pass to the chunk callbacks. See \fICURLOPT_CHUNK_DATA(3)\fP |
| .IP CURLOPT_FNMATCH_FUNCTION |
| Callback for wildcard matching. See \fICURLOPT_FNMATCH_FUNCTION(3)\fP |
| .IP CURLOPT_FNMATCH_DATA |
| Data pointer to pass to the wildcard matching callback. See \fICURLOPT_FNMATCH_DATA(3)\fP |
| .IP CURLOPT_SUPPRESS_CONNECT_HEADERS |
| Suppress proxy CONNECT response headers from user callbacks. See \fICURLOPT_SUPPRESS_CONNECT_HEADERS(3)\fP |
| .IP CURLOPT_RESOLVER_START_FUNCTION |
| Callback to be called before a new resolve request is started. See \fICURLOPT_RESOLVER_START_FUNCTION(3)\fP |
| .IP CURLOPT_RESOLVER_START_DATA |
| Data pointer to pass to resolver start callback. See \fICURLOPT_RESOLVER_START_DATA(3)\fP |
| .SH ERROR OPTIONS |
| .IP CURLOPT_ERRORBUFFER |
| Error message buffer. See \fICURLOPT_ERRORBUFFER(3)\fP |
| .IP CURLOPT_STDERR |
| stderr replacement stream. See \fICURLOPT_STDERR(3)\fP |
| .IP CURLOPT_FAILONERROR |
| Fail on HTTP 4xx errors. \fICURLOPT_FAILONERROR(3)\fP |
| .IP CURLOPT_KEEP_SENDING_ON_ERROR |
| Keep sending on HTTP >= 300 errors. \fICURLOPT_KEEP_SENDING_ON_ERROR(3)\fP |
| .SH NETWORK OPTIONS |
| .IP CURLOPT_URL |
| URL to work on. See \fICURLOPT_URL(3)\fP |
| .IP CURLOPT_PATH_AS_IS |
| Disable squashing /../ and /./ sequences in the path. See \fICURLOPT_PATH_AS_IS(3)\fP |
| .IP CURLOPT_PROTOCOLS |
| Allowed protocols. See \fICURLOPT_PROTOCOLS(3)\fP |
| .IP CURLOPT_REDIR_PROTOCOLS |
| Protocols to allow redirects to. See \fICURLOPT_REDIR_PROTOCOLS(3)\fP |
| .IP CURLOPT_DEFAULT_PROTOCOL |
| Default protocol. See \fICURLOPT_DEFAULT_PROTOCOL(3)\fP |
| .IP CURLOPT_PROXY |
| Proxy to use. See \fICURLOPT_PROXY(3)\fP |
| .IP CURLOPT_PRE_PROXY |
| Socks proxy to use. See \fICURLOPT_PRE_PROXY(3)\fP |
| .IP CURLOPT_PROXYPORT |
| Proxy port to use. See \fICURLOPT_PROXYPORT(3)\fP |
| .IP CURLOPT_PROXYTYPE |
| Proxy type. See \fICURLOPT_PROXYTYPE(3)\fP |
| .IP CURLOPT_NOPROXY |
| Filter out hosts from proxy use. \fICURLOPT_NOPROXY(3)\fP |
| .IP CURLOPT_HTTPPROXYTUNNEL |
| Tunnel through the HTTP proxy. \fICURLOPT_HTTPPROXYTUNNEL(3)\fP |
| .IP CURLOPT_CONNECT_TO |
| Connect to a specific host and port. See \fICURLOPT_CONNECT_TO(3)\fP |
| .IP CURLOPT_SOCKS5_AUTH |
| Socks5 authentication methods. See \fICURLOPT_SOCKS5_AUTH(3)\fP |
| .IP CURLOPT_SOCKS5_GSSAPI_SERVICE |
| Socks5 GSSAPI service name. \fICURLOPT_SOCKS5_GSSAPI_SERVICE(3)\fP |
| .IP CURLOPT_SOCKS5_GSSAPI_NEC |
| Socks5 GSSAPI NEC mode. See \fICURLOPT_SOCKS5_GSSAPI_NEC(3)\fP |
| .IP CURLOPT_PROXY_SERVICE_NAME |
| Proxy authentication service name. \fICURLOPT_PROXY_SERVICE_NAME(3)\fP |
| .IP CURLOPT_HAPROXYPROTOCOL |
| Send an HAProxy PROXY protocol v1 header. See \fICURLOPT_HAPROXYPROTOCOL(3)\fP |
| .IP CURLOPT_SERVICE_NAME |
| Authentication service name. \fICURLOPT_SERVICE_NAME(3)\fP |
| .IP CURLOPT_INTERFACE |
| Bind connection locally to this. See \fICURLOPT_INTERFACE(3)\fP |
| .IP CURLOPT_LOCALPORT |
| Bind connection locally to this port. See \fICURLOPT_LOCALPORT(3)\fP |
| .IP CURLOPT_LOCALPORTRANGE |
| Bind connection locally to port range. See \fICURLOPT_LOCALPORTRANGE(3)\fP |
| .IP CURLOPT_DNS_CACHE_TIMEOUT |
| Timeout for DNS cache. See \fICURLOPT_DNS_CACHE_TIMEOUT(3)\fP |
| .IP CURLOPT_DNS_USE_GLOBAL_CACHE |
| OBSOLETE Enable global DNS cache. See \fICURLOPT_DNS_USE_GLOBAL_CACHE(3)\fP |
| .IP CURLOPT_DOH_URL |
| Use this DOH server for name resolves. See \fICURLOPT_DOH_URL(3)\fP |
| .IP CURLOPT_BUFFERSIZE |
| Ask for alternate buffer size. See \fICURLOPT_BUFFERSIZE(3)\fP |
| .IP CURLOPT_PORT |
| Port number to connect to. See \fICURLOPT_PORT(3)\fP |
| .IP CURLOPT_TCP_FASTOPEN |
| Enable TFO, TCP Fast Open. See \fICURLOPT_TCP_FASTOPEN(3)\fP |
| .IP CURLOPT_TCP_NODELAY |
| Disable the Nagle algorithm. See \fICURLOPT_TCP_NODELAY(3)\fP |
| .IP CURLOPT_ADDRESS_SCOPE |
| IPv6 scope for local addresses. See \fICURLOPT_ADDRESS_SCOPE(3)\fP |
| .IP CURLOPT_TCP_KEEPALIVE |
| Enable TCP keep-alive. See \fICURLOPT_TCP_KEEPALIVE(3)\fP |
| .IP CURLOPT_TCP_KEEPIDLE |
| Idle time before sending keep-alive. See \fICURLOPT_TCP_KEEPIDLE(3)\fP |
| .IP CURLOPT_TCP_KEEPINTVL |
| Interval between keep-alive probes. See \fICURLOPT_TCP_KEEPINTVL(3)\fP |
| .IP CURLOPT_UNIX_SOCKET_PATH |
| Path to a Unix domain socket. See \fICURLOPT_UNIX_SOCKET_PATH(3)\fP |
| .IP CURLOPT_ABSTRACT_UNIX_SOCKET |
| Path to an abstract Unix domain socket. See \fICURLOPT_ABSTRACT_UNIX_SOCKET(3)\fP |
| .SH NAMES and PASSWORDS OPTIONS (Authentication) |
| .IP CURLOPT_NETRC |
| Enable .netrc parsing. See \fICURLOPT_NETRC(3)\fP |
| .IP CURLOPT_NETRC_FILE |
| \&.netrc file name. See \fICURLOPT_NETRC_FILE(3)\fP |
| .IP CURLOPT_USERPWD |
| User name and password. See \fICURLOPT_USERPWD(3)\fP |
| .IP CURLOPT_PROXYUSERPWD |
| Proxy user name and password. See \fICURLOPT_PROXYUSERPWD(3)\fP |
| .IP CURLOPT_USERNAME |
| User name. See \fICURLOPT_USERNAME(3)\fP |
| .IP CURLOPT_PASSWORD |
| Password. See \fICURLOPT_PASSWORD(3)\fP |
| .IP CURLOPT_LOGIN_OPTIONS |
| Login options. See \fICURLOPT_LOGIN_OPTIONS(3)\fP |
| .IP CURLOPT_PROXYUSERNAME |
| Proxy user name. See \fICURLOPT_PROXYUSERNAME(3)\fP |
| .IP CURLOPT_PROXYPASSWORD |
| Proxy password. See \fICURLOPT_PROXYPASSWORD(3)\fP |
| .IP CURLOPT_HTTPAUTH |
| HTTP server authentication methods. See \fICURLOPT_HTTPAUTH(3)\fP |
| .IP CURLOPT_TLSAUTH_USERNAME |
| TLS authentication user name. See \fICURLOPT_TLSAUTH_USERNAME(3)\fP |
| .IP CURLOPT_PROXY_TLSAUTH_USERNAME |
| Proxy TLS authentication user name. See \fICURLOPT_PROXY_TLSAUTH_USERNAME(3)\fP |
| .IP CURLOPT_TLSAUTH_PASSWORD |
| TLS authentication password. See \fICURLOPT_TLSAUTH_PASSWORD(3)\fP |
| .IP CURLOPT_PROXY_TLSAUTH_PASSWORD |
| Proxy TLS authentication password. See \fICURLOPT_PROXY_TLSAUTH_PASSWORD(3)\fP |
| .IP CURLOPT_TLSAUTH_TYPE |
| TLS authentication methods. See \fICURLOPT_TLSAUTH_TYPE(3)\fP |
| .IP CURLOPT_PROXY_TLSAUTH_TYPE |
| Proxy TLS authentication methods. See \fICURLOPT_PROXY_TLSAUTH_TYPE(3)\fP |
| .IP CURLOPT_PROXYAUTH |
| HTTP proxy authentication methods. See \fICURLOPT_PROXYAUTH(3)\fP |
| .IP CURLOPT_SASL_AUTHZID |
| SASL authorisation identity (identity to act as). See \fICURLOPT_SASL_AUTHZID(3)\fP |
| .IP CURLOPT_SASL_IR |
| Enable SASL initial response. See \fICURLOPT_SASL_IR(3)\fP |
| .IP CURLOPT_XOAUTH2_BEARER |
| OAuth2 bearer token. See \fICURLOPT_XOAUTH2_BEARER(3)\fP |
| .IP CURLOPT_DISALLOW_USERNAME_IN_URL |
| Don't allow username in URL. See \fICURLOPT_DISALLOW_USERNAME_IN_URL(3)\fP |
| .SH HTTP OPTIONS |
| .IP CURLOPT_AUTOREFERER |
| Automatically set Referer: header. See \fICURLOPT_AUTOREFERER(3)\fP |
| .IP CURLOPT_ACCEPT_ENCODING |
| Accept-Encoding and automatic decompressing data. See \fICURLOPT_ACCEPT_ENCODING(3)\fP |
| .IP CURLOPT_TRANSFER_ENCODING |
| Request Transfer-Encoding. See \fICURLOPT_TRANSFER_ENCODING(3)\fP |
| .IP CURLOPT_FOLLOWLOCATION |
| Follow HTTP redirects. See \fICURLOPT_FOLLOWLOCATION(3)\fP |
| .IP CURLOPT_UNRESTRICTED_AUTH |
| Do not restrict authentication to original host. \fICURLOPT_UNRESTRICTED_AUTH(3)\fP |
| .IP CURLOPT_MAXREDIRS |
| Maximum number of redirects to follow. See \fICURLOPT_MAXREDIRS(3)\fP |
| .IP CURLOPT_POSTREDIR |
| How to act on redirects after POST. See \fICURLOPT_POSTREDIR(3)\fP |
| .IP CURLOPT_PUT |
| Issue an HTTP PUT request. See \fICURLOPT_PUT(3)\fP |
| .IP CURLOPT_POST |
| Issue an HTTP POST request. See \fICURLOPT_POST(3)\fP |
| .IP CURLOPT_POSTFIELDS |
| Send a POST with this data. See \fICURLOPT_POSTFIELDS(3)\fP |
| .IP CURLOPT_POSTFIELDSIZE |
| The POST data is this big. See \fICURLOPT_POSTFIELDSIZE(3)\fP |
| .IP CURLOPT_POSTFIELDSIZE_LARGE |
| The POST data is this big. See \fICURLOPT_POSTFIELDSIZE_LARGE(3)\fP |
| .IP CURLOPT_COPYPOSTFIELDS |
| Send a POST with this data - and copy it. See \fICURLOPT_COPYPOSTFIELDS(3)\fP |
| .IP CURLOPT_HTTPPOST |
| Multipart formpost HTTP POST. See \fICURLOPT_HTTPPOST(3)\fP |
| .IP CURLOPT_REFERER |
| Referer: header. See \fICURLOPT_REFERER(3)\fP |
| .IP CURLOPT_USERAGENT |
| User-Agent: header. See \fICURLOPT_USERAGENT(3)\fP |
| .IP CURLOPT_HTTPHEADER |
| Custom HTTP headers. See \fICURLOPT_HTTPHEADER(3)\fP |
| .IP CURLOPT_HEADEROPT |
| Control custom headers. See \fICURLOPT_HEADEROPT(3)\fP |
| .IP CURLOPT_PROXYHEADER |
| Custom HTTP headers sent to proxy. See \fICURLOPT_PROXYHEADER(3)\fP |
| .IP CURLOPT_HTTP200ALIASES |
| Alternative versions of 200 OK. See \fICURLOPT_HTTP200ALIASES(3)\fP |
| .IP CURLOPT_COOKIE |
| Cookie(s) to send. See \fICURLOPT_COOKIE(3)\fP |
| .IP CURLOPT_COOKIEFILE |
| File to read cookies from. See \fICURLOPT_COOKIEFILE(3)\fP |
| .IP CURLOPT_COOKIEJAR |
| File to write cookies to. See \fICURLOPT_COOKIEJAR(3)\fP |
| .IP CURLOPT_COOKIESESSION |
| Start a new cookie session. See \fICURLOPT_COOKIESESSION(3)\fP |
| .IP CURLOPT_COOKIELIST |
| Add or control cookies. See \fICURLOPT_COOKIELIST(3)\fP |
| .IP CURLOPT_ALTSVC |
| Specify the Alt-Svc: cache file name. See \fICURLOPT_ALTSVC(3)\fP |
| .IP CURLOPT_ALTSVC_CTRL |
| Enable and configure Alt-Svc: treatment. See \fICURLOPT_ALTSVC_CTRL(3)\fP |
| .IP CURLOPT_HSTS |
| Set HSTS cache file. See \fICURLOPT_HSTS(3)\fP |
| .IP CURLOPT_HSTS_CTRL |
| Enable HSTS. See \fICURLOPT_HSTS_CTRL(3)\fP |
| .IP CURLOPT_HSTSREADFUNCTION |
| Set HSTS read callback. See \fICURLOPT_HSTSREADFUNCTION(3)\fP |
| .IP CURLOPT_HSTSREADDATA |
| Pass pointer to the HSTS read callback. See \fICURLOPT_HSTSREADDATA(3)\fP |
| .IP CURLOPT_HSTSWRITEFUNCTION |
| Set HSTS write callback. See \fICURLOPT_HSTSWRITEFUNCTION(3)\fP |
| .IP CURLOPT_HSTSWRITEDATA |
| Pass pointer to the HSTS write callback. See \fICURLOPT_HSTSWRITEDATA(3)\fP |
| .IP CURLOPT_HTTPGET |
| Do an HTTP GET request. See \fICURLOPT_HTTPGET(3)\fP |
| .IP CURLOPT_REQUEST_TARGET |
| Set the request target. \fICURLOPT_REQUEST_TARGET(3)\fP |
| .IP CURLOPT_HTTP_VERSION |
| HTTP version to use. \fICURLOPT_HTTP_VERSION(3)\fP |
| .IP CURLOPT_HTTP09_ALLOWED |
| Allow HTTP/0.9 responses. \fICURLOPT_HTTP09_ALLOWED(3)\fP |
| .IP CURLOPT_IGNORE_CONTENT_LENGTH |
| Ignore Content-Length. See \fICURLOPT_IGNORE_CONTENT_LENGTH(3)\fP |
| .IP CURLOPT_HTTP_CONTENT_DECODING |
| Disable Content decoding. See \fICURLOPT_HTTP_CONTENT_DECODING(3)\fP |
| .IP CURLOPT_HTTP_TRANSFER_DECODING |
| Disable Transfer decoding. See \fICURLOPT_HTTP_TRANSFER_DECODING(3)\fP |
| .IP CURLOPT_EXPECT_100_TIMEOUT_MS |
| 100-continue timeout. See \fICURLOPT_EXPECT_100_TIMEOUT_MS(3)\fP |
| .IP CURLOPT_TRAILERFUNCTION |
| Set callback for sending trailing headers. See |
| \fICURLOPT_TRAILERFUNCTION(3)\fP |
| .IP CURLOPT_TRAILERDATA |
| Custom pointer passed to the trailing headers callback. See |
| \fICURLOPT_TRAILERDATA(3)\fP |
| .IP CURLOPT_PIPEWAIT |
| Wait on connection to pipeline on it. See \fICURLOPT_PIPEWAIT(3)\fP |
| .IP CURLOPT_STREAM_DEPENDS |
| This HTTP/2 stream depends on another. See \fICURLOPT_STREAM_DEPENDS(3)\fP |
| .IP CURLOPT_STREAM_DEPENDS_E |
| This HTTP/2 stream depends on another exclusively. See |
| \fICURLOPT_STREAM_DEPENDS_E(3)\fP |
| .IP CURLOPT_STREAM_WEIGHT |
| Set this HTTP/2 stream's weight. See \fICURLOPT_STREAM_WEIGHT(3)\fP |
| .SH SMTP OPTIONS |
| .IP CURLOPT_MAIL_FROM |
| Address of the sender. See \fICURLOPT_MAIL_FROM(3)\fP |
| .IP CURLOPT_MAIL_RCPT |
| Address of the recipients. See \fICURLOPT_MAIL_RCPT(3)\fP |
| .IP CURLOPT_MAIL_AUTH |
| Authentication address. See \fICURLOPT_MAIL_AUTH(3)\fP |
| .IP CURLOPT_MAIL_RCPT_ALLLOWFAILS |
| Allow RCPT TO command to fail for some recipients. See \fICURLOPT_MAIL_RCPT_ALLLOWFAILS(3)\fP |
| .SH TFTP OPTIONS |
| .IP CURLOPT_TFTP_BLKSIZE |
| TFTP block size. See \fICURLOPT_TFTP_BLKSIZE(3)\fP |
| .IP CURLOPT_TFTP_NO_OPTIONS |
| Do not send TFTP options requests. See \fICURLOPT_TFTP_NO_OPTIONS(3)\fP |
| .SH FTP OPTIONS |
| .IP CURLOPT_FTPPORT |
| Use active FTP. See \fICURLOPT_FTPPORT(3)\fP |
| .IP CURLOPT_QUOTE |
| Commands to run before transfer. See \fICURLOPT_QUOTE(3)\fP |
| .IP CURLOPT_POSTQUOTE |
| Commands to run after transfer. See \fICURLOPT_POSTQUOTE(3)\fP |
| .IP CURLOPT_PREQUOTE |
| Commands to run just before transfer. See \fICURLOPT_PREQUOTE(3)\fP |
| .IP CURLOPT_APPEND |
| Append to remote file. See \fICURLOPT_APPEND(3)\fP |
| .IP CURLOPT_FTP_USE_EPRT |
| Use EPTR. See \fICURLOPT_FTP_USE_EPRT(3)\fP |
| .IP CURLOPT_FTP_USE_EPSV |
| Use EPSV. See \fICURLOPT_FTP_USE_EPSV(3)\fP |
| .IP CURLOPT_FTP_USE_PRET |
| Use PRET. See \fICURLOPT_FTP_USE_PRET(3)\fP |
| .IP CURLOPT_FTP_CREATE_MISSING_DIRS |
| Create missing directories on the remote server. See \fICURLOPT_FTP_CREATE_MISSING_DIRS(3)\fP |
| .IP CURLOPT_FTP_RESPONSE_TIMEOUT |
| Timeout for FTP responses. See \fICURLOPT_FTP_RESPONSE_TIMEOUT(3)\fP |
| .IP CURLOPT_FTP_ALTERNATIVE_TO_USER |
| Alternative to USER. See \fICURLOPT_FTP_ALTERNATIVE_TO_USER(3)\fP |
| .IP CURLOPT_FTP_SKIP_PASV_IP |
| Ignore the IP address in the PASV response. See \fICURLOPT_FTP_SKIP_PASV_IP(3)\fP |
| .IP CURLOPT_FTPSSLAUTH |
| Control how to do TLS. See \fICURLOPT_FTPSSLAUTH(3)\fP |
| .IP CURLOPT_FTP_SSL_CCC |
| Back to non-TLS again after authentication. See \fICURLOPT_FTP_SSL_CCC(3)\fP |
| .IP CURLOPT_FTP_ACCOUNT |
| Send ACCT command. See \fICURLOPT_FTP_ACCOUNT(3)\fP |
| .IP CURLOPT_FTP_FILEMETHOD |
| Specify how to reach files. See \fICURLOPT_FTP_FILEMETHOD(3)\fP |
| .SH RTSP OPTIONS |
| .IP CURLOPT_RTSP_REQUEST |
| RTSP request. See \fICURLOPT_RTSP_REQUEST(3)\fP |
| .IP CURLOPT_RTSP_SESSION_ID |
| RTSP session-id. See \fICURLOPT_RTSP_SESSION_ID(3)\fP |
| .IP CURLOPT_RTSP_STREAM_URI |
| RTSP stream URI. See \fICURLOPT_RTSP_STREAM_URI(3)\fP |
| .IP CURLOPT_RTSP_TRANSPORT |
| RTSP Transport: header. See \fICURLOPT_RTSP_TRANSPORT(3)\fP |
| .IP CURLOPT_RTSP_CLIENT_CSEQ |
| Client CSEQ number. See \fICURLOPT_RTSP_CLIENT_CSEQ(3)\fP |
| .IP CURLOPT_RTSP_SERVER_CSEQ |
| CSEQ number for RTSP Server->Client request. See \fICURLOPT_RTSP_SERVER_CSEQ(3)\fP |
| .SH PROTOCOL OPTIONS |
| .IP CURLOPT_TRANSFERTEXT |
| Use text transfer. See \fICURLOPT_TRANSFERTEXT(3)\fP |
| .IP CURLOPT_PROXY_TRANSFER_MODE |
| Add transfer mode to URL over proxy. See \fICURLOPT_PROXY_TRANSFER_MODE(3)\fP |
| .IP CURLOPT_CRLF |
| Convert newlines. See \fICURLOPT_CRLF(3)\fP |
| .IP CURLOPT_RANGE |
| Range requests. See \fICURLOPT_RANGE(3)\fP |
| .IP CURLOPT_RESUME_FROM |
| Resume a transfer. See \fICURLOPT_RESUME_FROM(3)\fP |
| .IP CURLOPT_RESUME_FROM_LARGE |
| Resume a transfer. See \fICURLOPT_RESUME_FROM_LARGE(3)\fP |
| .IP CURLOPT_CURLU |
| Set URL to work on with CURLU *. See \fICURLOPT_CURLU(3)\fP |
| .IP CURLOPT_CUSTOMREQUEST |
| Custom request/method. See \fICURLOPT_CUSTOMREQUEST(3)\fP |
| .IP CURLOPT_FILETIME |
| Request file modification date and time. See \fICURLOPT_FILETIME(3)\fP |
| .IP CURLOPT_DIRLISTONLY |
| List only. See \fICURLOPT_DIRLISTONLY(3)\fP |
| .IP CURLOPT_NOBODY |
| Do not get the body contents. See \fICURLOPT_NOBODY(3)\fP |
| .IP CURLOPT_INFILESIZE |
| Size of file to send. \fICURLOPT_INFILESIZE(3)\fP |
| .IP CURLOPT_INFILESIZE_LARGE |
| Size of file to send. \fICURLOPT_INFILESIZE_LARGE(3)\fP |
| .IP CURLOPT_UPLOAD |
| Upload data. See \fICURLOPT_UPLOAD(3)\fP |
| .IP CURLOPT_UPLOAD_BUFFERSIZE |
| Set upload buffer size. See \fICURLOPT_UPLOAD_BUFFERSIZE(3)\fP |
| .IP CURLOPT_MIMEPOST |
| Post/send MIME data. See \fICURLOPT_MIMEPOST(3)\fP |
| .IP CURLOPT_MAXFILESIZE |
| Maximum file size to get. See \fICURLOPT_MAXFILESIZE(3)\fP |
| .IP CURLOPT_MAXFILESIZE_LARGE |
| Maximum file size to get. See \fICURLOPT_MAXFILESIZE_LARGE(3)\fP |
| .IP CURLOPT_TIMECONDITION |
| Make a time conditional request. See \fICURLOPT_TIMECONDITION(3)\fP |
| .IP CURLOPT_TIMEVALUE |
| Time value for the time conditional request. See \fICURLOPT_TIMEVALUE(3)\fP |
| .IP CURLOPT_TIMEVALUE_LARGE |
| Time value for the time conditional request. See \fICURLOPT_TIMEVALUE_LARGE(3)\fP |
| .SH CONNECTION OPTIONS |
| .IP CURLOPT_TIMEOUT |
| Timeout for the entire request. See \fICURLOPT_TIMEOUT(3)\fP |
| .IP CURLOPT_TIMEOUT_MS |
| Millisecond timeout for the entire request. See \fICURLOPT_TIMEOUT_MS(3)\fP |
| .IP CURLOPT_LOW_SPEED_LIMIT |
| Low speed limit to abort transfer. See \fICURLOPT_LOW_SPEED_LIMIT(3)\fP |
| .IP CURLOPT_LOW_SPEED_TIME |
| Time to be below the speed to trigger low speed abort. See \fICURLOPT_LOW_SPEED_TIME(3)\fP |
| .IP CURLOPT_MAX_SEND_SPEED_LARGE |
| Cap the upload speed to this. See \fICURLOPT_MAX_SEND_SPEED_LARGE(3)\fP |
| .IP CURLOPT_MAX_RECV_SPEED_LARGE |
| Cap the download speed to this. See \fICURLOPT_MAX_RECV_SPEED_LARGE(3)\fP |
| .IP CURLOPT_MAXCONNECTS |
| Maximum number of connections in the connection pool. See \fICURLOPT_MAXCONNECTS(3)\fP |
| .IP CURLOPT_FRESH_CONNECT |
| Use a new connection. \fICURLOPT_FRESH_CONNECT(3)\fP |
| .IP CURLOPT_FORBID_REUSE |
| Prevent subsequent connections from re-using this. See \fICURLOPT_FORBID_REUSE(3)\fP |
| .IP CURLOPT_MAXAGE_CONN |
| Limit the age of connections for reuse. See \fICURLOPT_MAXAGE_CONN(3)\fP |
| .IP CURLOPT_CONNECTTIMEOUT |
| Timeout for the connection phase. See \fICURLOPT_CONNECTTIMEOUT(3)\fP |
| .IP CURLOPT_CONNECTTIMEOUT_MS |
| Millisecond timeout for the connection phase. See \fICURLOPT_CONNECTTIMEOUT_MS(3)\fP |
| .IP CURLOPT_IPRESOLVE |
| IP version to resolve to. See \fICURLOPT_IPRESOLVE(3)\fP |
| .IP CURLOPT_CONNECT_ONLY |
| Only connect, nothing else. See \fICURLOPT_CONNECT_ONLY(3)\fP |
| .IP CURLOPT_USE_SSL |
| Use TLS/SSL. See \fICURLOPT_USE_SSL(3)\fP |
| .IP CURLOPT_RESOLVE |
| Provide fixed/fake name resolves. See \fICURLOPT_RESOLVE(3)\fP |
| .IP CURLOPT_DNS_INTERFACE |
| Bind name resolves to this interface. See \fICURLOPT_DNS_INTERFACE(3)\fP |
| .IP CURLOPT_DNS_LOCAL_IP4 |
| Bind name resolves to this IP4 address. See \fICURLOPT_DNS_LOCAL_IP4(3)\fP |
| .IP CURLOPT_DNS_LOCAL_IP6 |
| Bind name resolves to this IP6 address. See \fICURLOPT_DNS_LOCAL_IP6(3)\fP |
| .IP CURLOPT_DNS_SERVERS |
| Preferred DNS servers. See \fICURLOPT_DNS_SERVERS(3)\fP |
| .IP CURLOPT_DNS_SHUFFLE_ADDRESSES |
| Shuffle addresses before use. See \fICURLOPT_DNS_SHUFFLE_ADDRESSES(3)\fP |
| .IP CURLOPT_ACCEPTTIMEOUT_MS |
| Timeout for waiting for the server's connect back to be accepted. See \fICURLOPT_ACCEPTTIMEOUT_MS(3)\fP |
| .IP CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS |
| Timeout for happy eyeballs. See \fICURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS(3)\fP |
| .IP CURLOPT_UPKEEP_INTERVAL_MS |
| Sets the interval at which connection upkeep are performed. See |
| \fICURLOPT_UPKEEP_INTERVAL_MS(3)\fP |
| .SH SSL and SECURITY OPTIONS |
| .IP CURLOPT_SSLCERT |
| Client cert. See \fICURLOPT_SSLCERT(3)\fP |
| .IP CURLOPT_SSLCERT_BLOB |
| Client cert memory buffer. See \fICURLOPT_SSLCERT_BLOB(3)\fP |
| .IP CURLOPT_PROXY_SSLCERT |
| Proxy client cert. See \fICURLOPT_PROXY_SSLCERT(3)\fP |
| .IP CURLOPT_PROXY_SSLCERT_BLOB |
| Proxy client cert memory buffer. See \fICURLOPT_PROXY_SSLCERT_BLOB(3)\fP |
| .IP CURLOPT_SSLCERTTYPE |
| Client cert type. See \fICURLOPT_SSLCERTTYPE(3)\fP |
| .IP CURLOPT_PROXY_SSLCERTTYPE |
| Proxy client cert type. See \fICURLOPT_PROXY_SSLCERTTYPE(3)\fP |
| .IP CURLOPT_SSLKEY |
| Client key. See \fICURLOPT_SSLKEY(3)\fP |
| .IP CURLOPT_SSLKEY_BLOB |
| Client key memory buffer. See \fICURLOPT_SSLKEY_BLOB(3)\fP |
| .IP CURLOPT_PROXY_SSLKEY |
| Proxy client key. See \fICURLOPT_PROXY_SSLKEY(3)\fP |
| .IP CURLOPT_PROXY_SSLKEY_BLOB |
| Proxy client key. See \fICURLOPT_PROXY_SSLKEY_BLOB(3)\fP |
| .IP CURLOPT_SSLKEYTYPE |
| Client key type. See \fICURLOPT_SSLKEYTYPE(3)\fP |
| .IP CURLOPT_PROXY_SSLKEYTYPE |
| Proxy client key type. See \fICURLOPT_PROXY_SSLKEYTYPE(3)\fP |
| .IP CURLOPT_KEYPASSWD |
| Client key password. See \fICURLOPT_KEYPASSWD(3)\fP |
| .IP CURLOPT_PROXY_KEYPASSWD |
| Proxy client key password. See \fICURLOPT_PROXY_KEYPASSWD(3)\fP |
| .IP CURLOPT_SSL_EC_CURVES |
| Set key exchange curves. See \fICURLOPT_SSL_EC_CURVES(3)\fP |
| .IP CURLOPT_SSL_ENABLE_ALPN |
| Enable use of ALPN. See \fICURLOPT_SSL_ENABLE_ALPN(3)\fP |
| .IP CURLOPT_SSL_ENABLE_NPN |
| Enable use of NPN. See \fICURLOPT_SSL_ENABLE_NPN(3)\fP |
| .IP CURLOPT_SSLENGINE |
| Use identifier with SSL engine. See \fICURLOPT_SSLENGINE(3)\fP |
| .IP CURLOPT_SSLENGINE_DEFAULT |
| Default SSL engine. See \fICURLOPT_SSLENGINE_DEFAULT(3)\fP |
| .IP CURLOPT_SSL_FALSESTART |
| Enable TLS False Start. See \fICURLOPT_SSL_FALSESTART(3)\fP |
| .IP CURLOPT_SSLVERSION |
| SSL version to use. See \fICURLOPT_SSLVERSION(3)\fP |
| .IP CURLOPT_PROXY_SSLVERSION |
| Proxy SSL version to use. See \fICURLOPT_PROXY_SSLVERSION(3)\fP |
| .IP CURLOPT_SSL_VERIFYHOST |
| Verify the host name in the SSL certificate. See \fICURLOPT_SSL_VERIFYHOST(3)\fP |
| .IP CURLOPT_PROXY_SSL_VERIFYHOST |
| Verify the host name in the proxy SSL certificate. See \fICURLOPT_PROXY_SSL_VERIFYHOST(3)\fP |
| .IP CURLOPT_SSL_VERIFYPEER |
| Verify the SSL certificate. See \fICURLOPT_SSL_VERIFYPEER(3)\fP |
| .IP CURLOPT_PROXY_SSL_VERIFYPEER |
| Verify the proxy SSL certificate. See \fICURLOPT_PROXY_SSL_VERIFYPEER(3)\fP |
| .IP CURLOPT_SSL_VERIFYSTATUS |
| Verify the SSL certificate's status. See \fICURLOPT_SSL_VERIFYSTATUS(3)\fP |
| .IP CURLOPT_CAINFO |
| CA cert bundle. See \fICURLOPT_CAINFO(3)\fP |
| .IP CURLOPT_PROXY_CAINFO |
| Proxy CA cert bundle. See \fICURLOPT_PROXY_CAINFO(3)\fP |
| .IP CURLOPT_ISSUERCERT |
| Issuer certificate. See \fICURLOPT_ISSUERCERT(3)\fP |
| .IP CURLOPT_ISSUERCERT_BLOB |
| Issuer certificate memory buffer. See \fICURLOPT_ISSUERCERT_BLOB(3)\fP |
| .IP CURLOPT_PROXY_ISSUERCERT |
| Proxy issuer certificate. See \fICURLOPT_PROXY_ISSUERCERT(3)\fP |
| .IP CURLOPT_PROXY_ISSUERCERT_BLOB |
| Proxy issuer certificate memory buffer. See \fICURLOPT_PROXY_ISSUERCERT_BLOB(3)\fP |
| .IP CURLOPT_CAPATH |
| Path to CA cert bundle. See \fICURLOPT_CAPATH(3)\fP |
| .IP CURLOPT_PROXY_CAPATH |
| Path to proxy CA cert bundle. See \fICURLOPT_PROXY_CAPATH(3)\fP |
| .IP CURLOPT_CRLFILE |
| Certificate Revocation List. See \fICURLOPT_CRLFILE(3)\fP |
| .IP CURLOPT_PROXY_CRLFILE |
| Proxy Certificate Revocation List. See \fICURLOPT_PROXY_CRLFILE(3)\fP |
| .IP CURLOPT_CERTINFO |
| Extract certificate info. See \fICURLOPT_CERTINFO(3)\fP |
| .IP CURLOPT_PINNEDPUBLICKEY |
| Set pinned SSL public key . See \fICURLOPT_PINNEDPUBLICKEY(3)\fP |
| .IP CURLOPT_PROXY_PINNEDPUBLICKEY |
| Set the proxy's pinned SSL public key. See |
| \fICURLOPT_PROXY_PINNEDPUBLICKEY(3)\fP |
| .IP CURLOPT_RANDOM_FILE |
| Provide source for entropy random data. See \fICURLOPT_RANDOM_FILE(3)\fP |
| .IP CURLOPT_EGDSOCKET |
| Identify EGD socket for entropy. See \fICURLOPT_EGDSOCKET(3)\fP |
| .IP CURLOPT_SSL_CIPHER_LIST |
| Ciphers to use. See \fICURLOPT_SSL_CIPHER_LIST(3)\fP |
| .IP CURLOPT_PROXY_SSL_CIPHER_LIST |
| Proxy ciphers to use. See \fICURLOPT_PROXY_SSL_CIPHER_LIST(3)\fP |
| .IP CURLOPT_TLS13_CIPHERS |
| TLS 1.3 cipher suites to use. See \fICURLOPT_TLS13_CIPHERS(3)\fP |
| .IP CURLOPT_PROXY_TLS13_CIPHERS |
| Proxy TLS 1.3 cipher suites to use. See \fICURLOPT_PROXY_TLS13_CIPHERS(3)\fP |
| .IP CURLOPT_SSL_SESSIONID_CACHE |
| Disable SSL session-id cache. See \fICURLOPT_SSL_SESSIONID_CACHE(3)\fP |
| .IP CURLOPT_SSL_OPTIONS |
| Control SSL behavior. See \fICURLOPT_SSL_OPTIONS(3)\fP |
| .IP CURLOPT_PROXY_SSL_OPTIONS |
| Control proxy SSL behavior. See \fICURLOPT_PROXY_SSL_OPTIONS(3)\fP |
| .IP CURLOPT_KRBLEVEL |
| Kerberos security level. See \fICURLOPT_KRBLEVEL(3)\fP |
| .IP CURLOPT_GSSAPI_DELEGATION |
| Disable GSS-API delegation. See \fICURLOPT_GSSAPI_DELEGATION(3)\fP |
| .SH SSH OPTIONS |
| .IP CURLOPT_SSH_AUTH_TYPES |
| SSH authentication types. See \fICURLOPT_SSH_AUTH_TYPES(3)\fP |
| .IP CURLOPT_SSH_COMPRESSION |
| Enable SSH compression. See \fICURLOPT_SSH_COMPRESSION(3)\fP |
| .IP CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 |
| MD5 of host's public key. See \fICURLOPT_SSH_HOST_PUBLIC_KEY_MD5(3)\fP |
| .IP CURLOPT_SSH_PUBLIC_KEYFILE |
| File name of public key. See \fICURLOPT_SSH_PUBLIC_KEYFILE(3)\fP |
| .IP CURLOPT_SSH_PRIVATE_KEYFILE |
| File name of private key. See \fICURLOPT_SSH_PRIVATE_KEYFILE(3)\fP |
| .IP CURLOPT_SSH_KNOWNHOSTS |
| File name with known hosts. See \fICURLOPT_SSH_KNOWNHOSTS(3)\fP |
| .IP CURLOPT_SSH_KEYFUNCTION |
| Callback for known hosts handling. See \fICURLOPT_SSH_KEYFUNCTION(3)\fP |
| .IP CURLOPT_SSH_KEYDATA |
| Custom pointer to pass to ssh key callback. See \fICURLOPT_SSH_KEYDATA(3)\fP |
| .SH OTHER OPTIONS |
| .IP CURLOPT_PRIVATE |
| Private pointer to store. See \fICURLOPT_PRIVATE(3)\fP |
| .IP CURLOPT_SHARE |
| Share object to use. See \fICURLOPT_SHARE(3)\fP |
| .IP CURLOPT_NEW_FILE_PERMS |
| Mode for creating new remote files. See \fICURLOPT_NEW_FILE_PERMS(3)\fP |
| .IP CURLOPT_NEW_DIRECTORY_PERMS |
| Mode for creating new remote directories. See \fICURLOPT_NEW_DIRECTORY_PERMS(3)\fP |
| .SH TELNET OPTIONS |
| .IP CURLOPT_TELNETOPTIONS |
| TELNET options. See \fICURLOPT_TELNETOPTIONS(3)\fP |
| .SH RETURN VALUE |
| \fICURLE_OK\fP (zero) means that the option was set properly, non-zero means an |
| error occurred as \fI<curl/curl.h>\fP defines. See the \fIlibcurl-errors(3)\fP |
| man page for the full list with descriptions. |
| |
| Strings passed on to libcurl must be shorter than 8000000 bytes, otherwise |
| \fIcurl_easy_setopt(3)\fP returns \fBCURLE_BAD_FUNCTION_ARGUMENT\fP (added in |
| 7.65.0). |
| |
| \fBCURLE_BAD_FUNCTION_ARGUMENT\fP is returned when the argument to an option |
| is invalid, like perhaps out of range.a |
| |
| If you try to set an option that libcurl doesn't know about, perhaps because |
| the library is too old to support it or the option was removed in a recent |
| version, this function will return \fICURLE_UNKNOWN_OPTION\fP. If support for |
| the option was disabled at compile-time, it will return |
| \fICURLE_NOT_BUILT_IN\fP. |
| .SH EXAMPLE |
| .nf |
| CURL *curl = curl_easy_init(); |
| if(curl) { |
| CURLcode res; |
| curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); |
| res = curl_easy_perform(curl); |
| curl_easy_cleanup(curl); |
| } |
| .fi |
| .SH "SEE ALSO" |
| .BR curl_easy_init "(3), " curl_easy_cleanup "(3), " curl_easy_reset "(3), " |
| .BR curl_easy_getinfo "(3), " curl_multi_setopt "(3), " |
