If you spot a problem with this page, click here to create a Bugzilla issue.

Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using a local clone.

etc.c.curl

This is an interface to the libcurl library.

Converted to D from curl headers by htod and cleaned up by Jonas Drewsen (jdrewsen)

Windows x86 note: A DMD compatible libcurl static library can be downloaded from the dlang.org download page.

This software is licensed as described in the file COPYING, which you should have received as part of this distribution. The terms are also available at http://curl.haxx.se/docs/copyright.html.

You may opt to use, copy, modify, merge, publish, distribute and/or sell copies of the Software, and permit persons to whom the Software is furnished to do so, under the terms of the COPYING file.

This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.

enum string LIBCURL_COPYRIGHT;

This is the global package copyright

enum string LIBCURL_VERSION;

This is the version number of the libcurl package from which this header file origins:

enum int LIBCURL_VERSION_MAJOR; enum int LIBCURL_VERSION_MINOR; enum int LIBCURL_VERSION_PATCH;

The numeric version number is also available "in parts" by using these constants

enum int LIBCURL_VERSION_NUM;

This is the numeric version of the libcurl version number, meant for easier parsing and comparions by programs. The LIBCURL_VERSION_NUM define will always follow this syntax:

0xXXYYZZ

Where XX, YY and ZZ are the main version, release and patch numbers in hexadecimal (using 8 bits each). All three numbers are always represented using two digits. 1.2 would appear as "0x010200" while version 9.11.7 appears as "0x090b07".

This 6-digit (24 bits) hexadecimal number does not show pre-release number, and it is always a greater number in a more recent release. It makes comparisons with greater than and less than work.

enum string LIBCURL_TIMESTAMP;

This is the date and time when the full source package was created. The timestamp is not stored in git, as the timestamp is properly set in the tarballs by the maketgz script.

The format of the date should follow this template:

"Mon Feb 12 11:35:33 UTC 2007"

alias curl_off_t = long;

Data type definition of curl_off_t.

jdrewsen - Always 64bit signed and that is what long is in D.

Comment below is from curlbuild.h:

NOTE 2:

For any given platform/compiler curl_off_t must be typedef'ed to a 64-bit wide signed integral data type. The width of this data type must remain constant and independent of any possible large file support settings.

As an exception to the above, curl_off_t shall be typedef'ed to a 32-bit wide signed integral data type if there is no 64-bit type.

alias CURL = void;

alias curl_socket_t = std.socket.socket_t;

jdrewsen - Get socket alias from std.socket

struct curl_httppost;

curl_httppost* next;: next entry in the list
char* name;: pointer to allocated name
c_long namelength;: length of name length
char* contents;: pointer to allocated data contents
c_long contentslength;: length of contents field
char* buffer;: pointer to allocated buffer contents
c_long bufferlength;: length of buffer field
char* contenttype;: Content-Type
curl_slist* contentheader;: list of extra headers for this form
curl_httppost* more;: if one field name has more than one file, this link should link to following files
c_long flags;: as defined below
char* showfilename;: The file name to show. If not set, the actual file name will be used (if this is a file part)
void* userp;: custom pointer used for HTTPPOST_CALLBACK posts

enum int HTTPPOST_FILENAME;

specified content is a file name

enum int HTTPPOST_READFILE;

specified content is a file name

enum int HTTPPOST_PTRNAME;

name is only stored pointer do not free in formfree

enum int HTTPPOST_PTRCONTENTS;

contents is only stored pointer do not free in formfree

enum int HTTPPOST_BUFFER;

upload file from buffer

enum int HTTPPOST_PTRBUFFER;

upload file from pointer contents

enum int HTTPPOST_CALLBACK;

upload file contents by using the regular read callback to get the data and pass the given pointer as custom pointer

alias curl_progress_callback = int function(void* clientp, double dltotal, double dlnow, double ultotal, double ulnow);

enum int CURL_MAX_WRITE_SIZE;

Tests have proven that 20K is a very bad buffer size for uploads on Windows, while 16K for some odd reason performed a lot better. We do the ifndef check to allow this value to easier be changed at build time for those who feel adventurous. The practical minimum is about 400 bytes since libcurl uses a buffer of this size as a scratch area (unrelated to network send operations).

enum int CURL_MAX_HTTP_HEADER;

The only reason to have a max limit for this is to avoid the risk of a bad server feeding libcurl with a never-ending header that will cause reallocs infinitely

enum int CURL_WRITEFUNC_PAUSE;

This is a magic return code for the write callback that, when returned, will signal libcurl to pause receiving on the current transfer.

alias curl_write_callback = ulong function(char* buffer, ulong size, ulong nitems, void* outstream);

enum CurlFileType: int;

enumeration of file types

file
directory
symlink
device_block
device_char
namedpipe
socket
door
unknown: is possible only on Sun Solaris now

alias curlfiletype = int;

enum CurlFInfoFlagKnown: int;

filename
filetype
time
perm
uid
gid
size
hlinkcount

struct _N2;

Content of this structure depends on information which is known and is achievable (e.g. by FTP LIST parsing). Please see the url_easy_setopt(3) man page for callbacks returning this structure -- some fields are mandatory, some others are optional. The FLAG field has special meaning.

If some of these fields is not NULL, it is a pointer to b_data.

char* time;
char* perm;
char* user;
char* group;
char* target;: pointer to the target filename of a symlink

struct curl_fileinfo;

char* filename;
curlfiletype filetype;
time_t time;
uint perm;
int uid;
int gid;
curl_off_t size;
c_long hardlinks;
_N2 strings;
uint flags;
char* b_data;
size_t b_size;
size_t b_used;

enum CurlChunkBgnFunc: int;

return codes for CURLOPT_CHUNK_BGN_FUNCTION

ok
fail: tell the lib to end the task
skip: skip this chunk over

alias curl_chunk_bgn_callback = long function(void* transfer_info, void* ptr, int remains);

if splitting of data transfer is enabled, this callback is called before download of an individual chunk started. Note that parameter "remains" works only for FTP wildcard downloading (for now), otherwise is not used

enum CurlChunkEndFunc: int;

return codes for CURLOPT_CHUNK_END_FUNCTION

ok
fail

alias curl_chunk_end_callback = long function(void* ptr);

If splitting of data transfer is enabled this callback is called after download of an individual chunk finished. Note! After this callback was set then it have to be called FOR ALL chunks. Even if downloading of this chunk was skipped in CHUNK_BGN_FUNC. This is the reason why we don't need "transfer_info" parameter in this callback and we are not interested in "remains" parameter too.

enum CurlFnMAtchFunc: int;

return codes for FNMATCHFUNCTION

match
nomatch
fail

alias curl_fnmatch_callback = int function(void* ptr, const(char*) pattern, const(char*) string);

callback type for wildcard downloading pattern matching. If the string matches the pattern, return CURL_FNMATCHFUNC_MATCH value, etc.

enum CurlSeekPos: int;

seek whence...

set
current
end

enum CurlSeek: int;

These are the return codes for the seek callbacks

ok
fail: fail the entire transfer
cantseek: tell libcurl seeking can't be done, so libcurl might try other means instead

alias curl_seek_callback = int function(void* instream, long offset, int origin);

enum CurlReadFunc: int;

abort: This is a return code for the read callback that, when returned, will signal libcurl to immediately abort the current transfer.
pause: This is a return code for the read callback that, when returned, will const signal libcurl to pause sending data on the current transfer.

alias curl_read_callback = ulong function(char* buffer, ulong size, ulong nitems, void* instream);

enum CurlSockType: int;

ipcxn: socket created for a specific IP connection
last: never use

alias curlsocktype = int;

alias curl_sockopt_callback = int function(void* clientp, socket_t curlfd, int purpose);

struct curl_sockaddr;

addrlen was a socklen_t type before 7.18.0 but it turned really ugly and painful on the systems that lack this type

int family;
int socktype;
int protocol;
uint addrlen;: addrlen was a socklen_t type before 7.18.0 but it turned really ugly and painful on the systems that lack this type
sockaddr addr;

alias curl_opensocket_callback = socket_t function(void* clientp, int purpose, curl_sockaddr* address);

enum CurlIoError: int;

ok: I/O operation successful
unknowncmd: command was unknown to callback
failrestart: failed to restart the read
last: never use

alias curlioerr = int;

enum CurlIoCmd: int;

nop: command was unknown to callback
restartread: failed to restart the read
last: never use

alias curliocmd = int;

alias curl_ioctl_callback = int function(void* handle, int cmd, void* clientp);

alias curl_malloc_callback = void* function(ulong size); alias curl_free_callback = void function(void* ptr); alias curl_realloc_callback = void* function(void* ptr, ulong size); alias curl_strdup_callback = char* function(const(char*) str); alias curl_calloc_callback = void* function(ulong nmemb, ulong size);

The following typedef's are signatures of malloc, free, realloc, strdup and calloc respectively. Function pointers of these types can be passed to the curl_global_init_mem() function to set user defined memory management callback routines.

enum CurlCallbackInfo: int;

the kind of data that is passed to information_callback

text
header_in
header_out
data_in
data_out
ssl_data_in
ssl_data_out
end

alias curl_infotype = int;

alias curl_debug_callback = int function(void* handle, int type, char* data, ulong size, void* userptr);

enum CurlError: int;

All possible error codes from all sorts of curl functions. Future versions may return other values, stay prepared.

Always add new return codes last. Never *EVER* remove any. The return codes must remain the same!

ok
unsupported_protocol: 1
failed_init: 2
url_malformat: 3
not_built_in: 4 - [was obsoleted in August 2007 for 7.17.0, reused in April 2011 for 7.21.5]
couldnt_resolve_proxy: 5
couldnt_resolve_host: 6
couldnt_connect: 7
ftp_weird_server_reply: 8
remote_access_denied: 9 a service was denied by the server due to lack of access - when login fails this is not returned.
obsolete10: 10 - NOT USED
ftp_weird_pass_reply: 11
obsolete12: 12 - NOT USED
ftp_weird_pasv_reply: 13
ftp_weird_227_format: 14
ftp_cant_get_host: 15
obsolete16: 16 - NOT USED
ftp_couldnt_set_type: 17
partial_file: 18
ftp_couldnt_retr_file: 19
obsolete20: 20 - NOT USED
quote_error: 21 - quote command failure
http_returned_error: 22
write_error: 23
obsolete24: 24 - NOT USED
upload_failed: 25 - failed upload "command"
read_error: 26 - couldn't open/read from file
out_of_memory: 27
operation_timedout: Note CURLE_OUT_OF_MEMORY may sometimes indicate a conversion error instead of a memory allocation error if CURL_DOES_CONVERSIONS is defined
28 - the timeout time was reached
obsolete29: 29 - NOT USED
ftp_port_failed: 30 - FTP PORT operation failed
ftp_couldnt_use_rest: 31 - the REST command failed
obsolete32: 32 - NOT USED
range_error: 33 - RANGE "command" didn't work
http_post_error: 34
ssl_connect_error: 35 - wrong when connecting with SSL
bad_download_resume: 36 - couldn't resume download
file_couldnt_read_file: 37
ldap_cannot_bind: 38
ldap_search_failed: 39
obsolete40: 40 - NOT USED
function_not_found: 41
aborted_by_callback: 42
bad_function_argument: 43
obsolete44: 44 - NOT USED
interface_failed: 45 - CURLOPT_INTERFACE failed
obsolete46: 46 - NOT USED
too_many_redirects: 47 - catch endless re-direct loops
unknown_option: 48 - User specified an unknown option
telnet_option_syntax: 49 - Malformed telnet option
obsolete50: 50 - NOT USED
peer_failed_verification: 51 - peer's certificate or fingerprint wasn't verified fine
got_nothing: 52 - when this is a specific error
ssl_engine_notfound: 53 - SSL crypto engine not found
ssl_engine_setfailed: 54 - can not set SSL crypto engine as default
send_error: 55 - failed sending network data
recv_error: 56 - failure in receiving network data
obsolete57: 57 - NOT IN USE
ssl_certproblem: 58 - problem with the local certificate
ssl_cipher: 59 - couldn't use specified cipher
ssl_cacert: 60 - problem with the CA cert (path?)
bad_content_encoding: 61 - Unrecognized transfer encoding
ldap_invalid_url: 62 - Invalid LDAP URL
filesize_exceeded: 63 - Maximum file size exceeded
use_ssl_failed: 64 - Requested FTP SSL level failed
send_fail_rewind: 65 - Sending the data requires a rewind that failed
ssl_engine_initfailed: 66 - failed to initialise ENGINE
login_denied: 67 - user, password or similar was not accepted and we failed to login
tftp_notfound: 68 - file not found on server
tftp_perm: 69 - permission problem on server
remote_disk_full: 70 - out of disk space on server
tftp_illegal: 71 - Illegal TFTP operation
tftp_unknownid: 72 - Unknown transfer ID
remote_file_exists: 73 - File already exists
tftp_nosuchuser: 74 - No such user
conv_failed: 75 - conversion failed
conv_reqd: 76 - caller must register conversion callbacks using curl_easy_setopt options CURLOPT_CONV_FROM_NETWORK_FUNCTION, CURLOPT_CONV_TO_NETWORK_FUNCTION, and CURLOPT_CONV_FROM_UTF8_FUNCTION
ssl_cacert_badfile: 77 - could not load CACERT file, missing or wrong format
remote_file_not_found: 78 - remote file not found
ssh: 79 - error from the SSH layer, somewhat generic so the error message will be of interest when this has happened
ssl_shutdown_failed: 80 - Failed to shut down the SSL connection
again: 81 - socket is not ready for send/recv, wait till it's ready and try again (Added in 7.18.2)
ssl_crl_badfile: 82 - could not load CRL file, missing or wrong format (Added in 7.19.0)
ssl_issuer_error: 83 - Issuer check failed. (Added in 7.19.0)
ftp_pret_failed: 84 - a PRET command failed
rtsp_cseq_error: 85 - mismatch of RTSP CSeq numbers
rtsp_session_error: 86 - mismatch of RTSP Session Identifiers
ftp_bad_file_list: 87 - unable to parse FTP file list
chunk_failed: 88 - chunk callback reported error
curl_last: never use!

alias CURLcode = int;

alias curl_conv_callback = int function(char* buffer, ulong length);

This prototype applies to all conversion callbacks

alias curl_ssl_ctx_callback = int function(void* curl, void* ssl_ctx, void* userptr);

actually an OpenSSL SSL_CTX

enum CurlProxy: int;

http: added in 7.10, new in 7.19.4 default is to use CONNECT HTTP/1.1
http_1_0: added in 7.19.4, force to use CONNECT HTTP/1.0
socks4: support added in 7.15.2, enum existed already in 7.10
socks5: added in 7.10
socks4a: added in 7.18.0
socks5_hostname: Use the SOCKS5 protocol but pass along the host name rather than the IP address. added in 7.18.0

alias curl_proxytype = int;

enum CurlAuth: long;

basic: Basic (default)
digest: Digest
gssnegotiate: GSS-Negotiate
ntlm: NTLM
digest_ie: Digest with IE flavour
only: used together with a single other type to force no auth or just that single type
any: all fine types set
anysafe

enum CurlSshAuth: int;

any: all types supported by the server
none: none allowed, silly but complete
publickey: public/private key files
password: password
host: host key files
keyboard: keyboard interactive

enum int CURL_ERROR_SIZE;

enum CurlKHType: int;

points to a zero-terminated string encoded with base64 if len is zero, otherwise to the "raw" data

unknown
rsa1
rsa
dss

struct curl_khkey;

const(char)* key;: points to a zero-terminated string encoded with base64 if len is zero, otherwise to the "raw" data
size_t len;
CurlKHType keytype;

enum CurlKHStat: int;

this is the set of return values expected from the curl_sshkeycallback callback

fine_add_to_file
fine
reject: reject the connection, return an error
defer: do not accept it, but we can't answer right now so this causes a CURLE_DEFER error but otherwise the connection will be left intact etc
last: not for use, only a marker for last-in-list

enum CurlKHMatch: int;

this is the set of status codes pass in to the callback

ok: match
mismatch: host found, key mismatch!
missing: no matching host/key found
last: not for use, only a marker for last-in-list

alias curl_sshkeycallback = int function(void* easy, curl_khkey* knownkey, curl_khkey* foundkey, CurlKHMatch m, void* clientp);

enum CurlUseSSL: int;

parameter for the CURLOPT_USE_SSL option

none: do not attempt to use SSL
tryssl: try using SSL, proceed anyway otherwise
control: SSL for the control connection or fail
all: SSL for all communication or fail
last: not an option, never use

alias curl_usessl = int;

enum CurlFtpSSL: int;

parameter for the CURLOPT_FTP_SSL_CCC option

ccc_none: do not send CCC
ccc_passive: Let the server initiate the shutdown
ccc_active: Initiate the shutdown
ccc_last: not an option, never use

alias curl_ftpccc = int;

enum CurlFtpAuth: int;

parameter for the CURLOPT_FTPSSLAUTH option

defaultauth: let libcurl decide
ssl: use "AUTH SSL"
tls: use "AUTH TLS"
last: not an option, never use

alias curl_ftpauth = int;

enum CurlFtp: int;

parameter for the CURLOPT_FTP_CREATE_MISSING_DIRS option

create_dir_none: do NOT create missing dirs!
create_dir: (FTP/SFTP) if CWD fails, try MKD and then CWD again if MKD succeeded, for SFTP this does similar magic
create_dir_retry: (FTP only) if CWD fails, try MKD and then CWD again even if MKD failed!
create_dir_last: not an option, never use

alias curl_ftpcreatedir = int;

enum CurlFtpMethod: int;

parameter for the CURLOPT_FTP_FILEMETHOD option

defaultmethod: let libcurl pick
multicwd: single CWD operation for each path part
nocwd: no CWD at all
singlecwd: one CWD to full dir, then work on file
last: not an option, never use

alias curl_ftpmethod = int;

enum CurlProto: int;

CURLPROTO_ defines are for the CURLOPT_*PROTOCOLS options

http
https
ftp
ftps
scp
sftp
telnet
ldap
ldaps
dict
file
tftp
imap
imaps
pop3
pop3s
smtp
smtps
rtsp
rtmp
rtmpt
rtmpe
rtmpte
rtmps
rtmpts
gopher
all: enable everything

enum int CURLOPTTYPE_LONG; enum int CURLOPTTYPE_OBJECTPOINT; enum int CURLOPTTYPE_FUNCTIONPOINT; enum int CURLOPTTYPE_OFF_T;

long may be 32 or 64 bits, but we should never depend on anything else but 32

alias LONG = CURLOPTTYPE_LONG; alias OBJECTPOINT = CURLOPTTYPE_OBJECTPOINT; alias FUNCTIONPOINT = CURLOPTTYPE_FUNCTIONPOINT; alias OFF_T = CURLOPTTYPE_OFF_T;

name is uppercase CURLOPT_<name>, type is one of the defined CURLOPTTYPE_<type> number is unique identifier

The macro "##" is ISO C, we assume pre-ISO C doesn't support it.

enum CurlOption: int;

file: This is the FILE * or void * the regular output should be written to.
url: The full URL to get/put
port: Port number to connect to, if other than default.
proxy: Name of proxy to use.
userpwd: "name:password" to use when fetching.
proxyuserpwd: "name:password" to use with proxy.
range: Range to get, specified as an ASCII string.
infile: not used
Specified file stream to upload from (use as input):
errorbuffer: Buffer to receive error messages in, must be at least CURL_ERROR_SIZE bytes big. If this is not used, error messages go to stderr instead:
writefunction: Function that will be called to store the output (instead of fwrite). The parameters will use fwrite() syntax, make sure to follow them.
readfunction: Function that will be called to read the input (instead of fread). The parameters will use fread() syntax, make sure to follow them.
timeout: Time-out the read operation after this amount of seconds
infilesize: If the CURLOPT_INFILE is used, this can be used to inform libcurl about how large the file being sent really is. That allows better error checking and better verifies that the upload was successful. -1 means unknown size.
For large file support, there is also a LARGE version of the key which takes an off_t type, allowing platforms with larger off_t sizes to handle larger files. See below for INFILESIZE_LARGE.
postfields: POST static input fields.
referer: Set the referrer page (needed by some CGIs)
ftpport: Set the FTP PORT string (interface name, named or numerical IP address) Use i.e '-' to use default address.
useragent: Set the User-Agent string (examined by some CGIs)
low_speed_limit: If the download receives less than "low speed limit" bytes/second during "low speed time" seconds, the operations is aborted. You could i.e if you have a pretty high speed connection, abort if it is less than 2000 bytes/sec during 20 seconds.
Set the "low speed limit"
low_speed_time: Set the "low speed time"
resume_from: Set the continuation offset.
Note there is also a LARGE version of this key which uses off_t types, allowing for large file offsets on platforms which use larger-than-32-bit off_t's. Look below for RESUME_FROM_LARGE.
cookie: Set cookie in request:
httpheader: This points to a linked list of headers, struct curl_slist kind
httppost: This points to a linked list of post entries, struct curl_httppost
sslcert: name of the file keeping your private SSL-certificate
keypasswd: password for the SSL or SSH private key
crlf: send TYPE parameter?
quote: send linked-list of QUOTE commands
writeheader: send FILE * or void * to store headers to, if you use a callback it is simply passed to the callback unmodified
cookiefile: point to a file to read the initial cookies from, also enables "cookie awareness"
sslversion: What version to specifically try to use. See CURL_SSLVERSION defines below.
timecondition: What kind of HTTP time condition to use, see defines
timevalue: Time to use with the above condition. Specified in number of seconds since 1 Jan 1970
customrequest: Custom request, for customizing the get command like
HTTP DELETE, TRACE and others

FTP to use a different list command
stderr: HTTP request, for odd commands like DELETE, TRACE and others
postquote: send linked-list of post-transfer QUOTE commands
writeinfo: Pass a pointer to string of the output using full variable-replacement as described elsewhere.
verbose: talk a lot
header: throw the header out too
noprogress: shut off the progress meter
nobody: use HEAD to get http document
failonerror: no output on http error codes >= 300
upload: this is an upload
post: HTTP POST method
dirlistonly: return bare names when listing directories
append: Append instead of overwrite on upload!
netrc: Specify whether to read the user+password from the .netrc or the URL. This must be one of the CURL_NETRC_* enums below.
followlocation: use Location: Luke!
transfertext: transfer data in text/ASCII format
put: HTTP PUT
progressfunction: Function that will be called instead of the internal progress display function. This function should be defined as the curl_progress_callback prototype defines.
progressdata: Data passed to the progress callback
autoreferer: We want the referrer field set automatically when following locations
proxyport: Port of the proxy, can be set in the proxy string as well with: "[host]:[port]"
postfieldsize: size of the POST input data, if strlen() is not good to use
httpproxytunnel: tunnel non-http operations through a HTTP proxy
intrface: Set the interface string to use as outgoing network interface
krblevel: Set the krb4/5 security level, this also enables krb4/5 awareness. This is a string, 'clear', 'safe', 'confidential' or 'private'. If the string is set but doesn't match one of these, 'private' will be used.
ssl_verifypeer: Set if we should verify the peer in ssl handshake, set 1 to verify.
cainfo: The CApath or CAfile used to validate the peer certificate this option is used only if SSL_VERIFYPEER is true
maxredirs: Maximum number of http redirects to follow
filetime: Pass a long set to 1 to get the date of the requested document (if possible)! Pass a zero to shut it off.
telnetoptions: This points to a linked list of telnet options
maxconnects: Max amount of cached alive connections
closepolicy: What policy to use when closing connections when the cache is filled up
fresh_connect: Set to explicitly use a new connection for the upcoming transfer. Do not use this unless you're absolutely sure of this, as it makes the operation slower and is less friendly for the network.
forbid_reuse: Set to explicitly forbid the upcoming transfer's connection to be re-used when done. Do not use this unless you're absolutely sure of this, as it makes the operation slower and is less friendly for the network.
random_file: Set to a file name that contains random data for libcurl to use to seed the random engine when doing SSL connects.
egdsocket: Set to the Entropy Gathering Daemon socket pathname
connecttimeout: Time-out connect operations after this amount of seconds, if connects are OK within this time, then fine... This only aborts the connect phase. [Only works on unix-style/SIGALRM operating systems]
headerfunction: Function that will be called to store headers (instead of fwrite). The parameters will use fwrite() syntax, make sure to follow them.
httpget: Set this to force the HTTP request to get back to GET. Only really usable if POST, PUT or a custom request have been used first.
ssl_verifyhost: Set if we should verify the Common name from the peer certificate in ssl handshake, set 1 to check existence, 2 to ensure that it matches the provided hostname.
cookiejar: Specify which file name to write all known cookies in after completed operation. Set file name to "-" (dash) to make it go to stdout.
ssl_cipher_list: Specify which SSL ciphers to use
http_version: Specify which HTTP version to use! This must be set to one of the CURL_HTTP_VERSION* enums set below.
ftp_use_epsv: Specifically switch on or off the FTP engine's use of the EPSV command. By default, that one will always be attempted before the more traditional PASV command.
sslcerttype: type of the file keeping your SSL-certificate ("DER", "PEM", "ENG")
sslkey: name of the file keeping your private SSL-key
sslkeytype: type of the file keeping your private SSL-key ("DER", "PEM", "ENG")
sslengine: crypto engine for the SSL-sub system
sslengine_default: set the crypto engine for the SSL-sub system as default the param has no meaning...
dns_use_global_cache: Non-zero value means to use the global dns cache
dns_cache_timeout: DNS cache timeout
prequote: send linked-list of pre-transfer QUOTE commands
debugfunction: set the debug function
debugdata: set the data for the debug function
cookiesession: mark this as start of a cookie session
capath: The CApath directory used to validate the peer certificate this option is used only if SSL_VERIFYPEER is true
buffersize: Instruct libcurl to use a smaller receive buffer
nosignal: Instruct libcurl to not use any signal/alarm handlers, even when using timeouts. This option is useful for multi-threaded applications. See libcurl-the-guide for more background information.
share: Provide a CURLShare for mutexing non-ts data
proxytype: indicates type of proxy. accepted values are CURLPROXY_HTTP (default), CURLPROXY_SOCKS4, CURLPROXY_SOCKS4A and CURLPROXY_SOCKS5.
encoding: Set the Accept-Encoding string. Use this to tell a server you would like the response to be compressed.
private_opt: Set pointer to private data
http200aliases: Set aliases for HTTP 200 in the HTTP Response header
unrestricted_auth: Continue to send authentication (user+password) when following locations, even when hostname changed. This can potentially send off the name and password to whatever host the server decides.
ftp_use_eprt: Specifically switch on or off the FTP engine's use of the EPRT command ( it also disables the LPRT attempt). By default, those ones will always be attempted before the good old traditional PORT command.
httpauth: Set this to a bitmask value to enable the particular authentications methods you like. Use this in combination with CURLOPT_USERPWD. Note that setting multiple bits may cause extra network round-trips.
ssl_ctx_function: Set the ssl context callback function, currently only for OpenSSL ssl_ctx in second argument. The function must be matching the curl_ssl_ctx_callback proto.
ssl_ctx_data: Set the userdata for the ssl context callback function's third argument
ftp_create_missing_dirs: FTP Option that causes missing dirs to be created on the remote server. In 7.19.4 we introduced the convenience enums for this option using the CURLFTP_CREATE_DIR prefix.
proxyauth: Set this to a bitmask value to enable the particular authentications methods you like. Use this in combination with CURLOPT_PROXYUSERPWD. Note that setting multiple bits may cause extra network round-trips.
ftp_response_timeout: FTP option that changes the timeout, in seconds, associated with getting a response. This is different from transfer timeout time and essentially places a demand on the FTP server to acknowledge commands in a timely manner.
ipresolve: Set this option to one of the CURL_IPRESOLVE_* defines (see below) to tell libcurl to resolve names to those IP versions only. This only has affect on systems with support for more than one, i.e IPv4 and_ IPv6.
maxfilesize: Set this option to limit the size of a file that will be downloaded from an HTTP or FTP server.
Note there is also LARGE version which adds large file support for platforms which have larger off_t sizes. See MAXFILESIZE_LARGE below.
infilesize_large: See the comment for INFILESIZE above, but in short, specifies the size of the file being uploaded. -1 means unknown.
resume_from_large: Sets the continuation offset. There is also a LONG version of this; look above for RESUME_FROM.
maxfilesize_large: Sets the maximum size of data that will be downloaded from an HTTP or FTP server. See MAXFILESIZE above for the LONG version.
netrc_file: Set this option to the file name of your .netrc file you want libcurl to parse (using the CURLOPT_NETRC option). If not set, libcurl will do a poor attempt to find the user's home directory and check for a .netrc file in there.
use_ssl: Enable SSL/TLS for FTP, pick one of: CURLFTPSSL_TRY - try using SSL, proceed anyway otherwise CURLFTPSSL_CONTROL - SSL for the control connection or fail CURLFTPSSL_ALL - SSL for all communication or fail
postfieldsize_large: The LARGE version of the standard POSTFIELDSIZE option
tcp_nodelay: Enable/disable the TCP Nagle algorithm
ftpsslauth: When FTP over SSL/TLS is selected (with CURLOPT_USE_SSL), this option can be used to change libcurl's default action which is to first try "AUTH SSL" and then "AUTH TLS" in this order, and proceed when a OK response has been received.
Available parameters are: CURLFTPAUTH_DEFAULT - let libcurl decide CURLFTPAUTH_SSL - try "AUTH SSL" first, then TLS CURLFTPAUTH_TLS - try "AUTH TLS" first, then SSL
ioctlfunction
ioctldata
ftp_account: zero terminated string for pass on to the FTP server when asked for "account" info
cookielist: feed cookies into cookie engine
ignore_content_length: ignore Content-Length
ftp_skip_pasv_ip: Set to non-zero to skip the IP address received in a 227 PASV FTP server response. Typically used for FTP-SSL purposes but is not restricted to that. libcurl will then instead use the same IP address it used for the control connection.
ftp_filemethod: Select "file method" to use when doing FTP, see the curl_ftpmethod above.
localport: Local port number to bind the socket to
localportrange: Number of ports to try, including the first one set with LOCALPORT. Thus, setting it to 1 will make no additional attempts but the first.
connect_only: no transfer, set up connection and let application use the socket by extracting it with CURLINFO_LASTSOCKET
conv_from_network_function: Function that will be called to convert from the network encoding (instead of using the iconv calls in libcurl)
conv_to_network_function: Function that will be called to convert to the network encoding (instead of using the iconv calls in libcurl)
conv_from_utf8_function: Function that will be called to convert from UTF8 (instead of using the iconv calls in libcurl) Note that this is used only for SSL certificate processing
max_send_speed_large max_recv_speed_large: If the connection proceeds too quickly then need to slow it down
limit-rate: maximum number of bytes per second to send or receive
ftp_alternative_to_user: Pointer to command string to send if USER/PASS fails.
sockoptfunction: callback function for setting socket options
ssl_sessionid_cache: set to 0 to disable session ID re-use for this transfer, default is enabled (== 1)
ssh_auth_types: allowed SSH authentication methods
ssh_public_keyfile: Used by scp/sftp to do public/private key authentication
ftp_ssl_ccc: Send CCC (Clear Command Channel) after authentication
timeout_ms: Same as TIMEOUT and CONNECTTIMEOUT, but with ms resolution
http_transfer_decoding http_content_decoding: set to zero to disable the libcurl's decoding and thus pass the raw body data to the application even when it is encoded/compressed
new_file_perms new_directory_perms: Permission used when creating new files and directories on the remote server for protocols that support it, SFTP/SCP/FILE
postredir: Set the behaviour of POST when redirecting. Values must be set to one of CURL_REDIR* defines below. This used to be called CURLOPT_POST301
ssh_host_public_key_md5: used by scp/sftp to verify the host's public key
opensocketfunction opensocketdata: Callback function for opening socket (instead of socket(2)). Optionally, callback is able change the address or refuse to connect returning CURL_SOCKET_BAD. The callback should have type curl_opensocket_callback
copypostfields: POST volatile input fields.
proxy_transfer_mode: set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy
seekfunction seekdata: Callback function for seeking in the input stream
crlfile: CRL file
issuercert: Issuer certificate
address_scope: (IPv6) Address scope
certinfo: Collect certificate chain info and allow it to get retrievable with CURLINFO_CERTINFO after the transfer is complete. (Unfortunately) only working with OpenSSL-powered builds.
username password: "name" and "pwd" to use when fetching.
proxyusername proxypassword: "name" and "pwd" to use with Proxy when fetching.
noproxy: Comma separated list of hostnames defining no-proxy zones. These should match both hostnames directly, and hostnames within a domain. For example, local.com will match local.com and www.local.com, but NOT notlocal.com or www.notlocal.com. For compatibility with other implementations of this, .local.com will be considered to be the same as local.com. A single * is the only valid wildcard, and effectively disables the use of proxy.
tftp_blksize: block size for TFTP transfers
socks5_gssapi_service: Socks Service
socks5_gssapi_nec: Socks Service
protocols: set the bitmask for the protocols that are allowed to be used for the transfer, which thus helps the app which takes URLs from users or other external inputs and want to restrict what protocol(s) to deal with. Defaults to CURLPROTO_ALL.
redir_protocols: set the bitmask for the protocols that libcurl is allowed to follow to, as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs to be set in both bitmasks to be allowed to get redirected to. Defaults to all protocols except FILE and SCP.
ssh_knownhosts: set the SSH knownhost file name to use
ssh_keyfunction: set the SSH host key callback, must point to a curl_sshkeycallback function
ssh_keydata: set the SSH host key callback custom pointer
mail_from: set the SMTP mail originator
mail_rcpt: set the SMTP mail receiver(s)
ftp_use_pret: FTP send PRET before PASV
rtsp_request: RTSP request method (OPTIONS, SETUP, PLAY, etc...)
rtsp_session_id: The RTSP session identifier
rtsp_stream_uri: The RTSP stream URI
rtsp_transport: The Transport: header to use in RTSP requests
rtsp_client_cseq: Manually initialize the client RTSP CSeq for this handle
rtsp_server_cseq: Manually initialize the server RTSP CSeq for this handle
interleavedata: The stream to pass to INTERLEAVEFUNCTION.
interleavefunction: Let the application define a custom write method for RTP data
wildcardmatch: Turn on wildcard matching
chunk_bgn_function: Directory matching callback called before downloading of an individual file (chunk) started
chunk_end_function: Directory matching callback called after the file (chunk) was downloaded, or skipped
fnmatch_function: Change match (fnmatch-like) callback for wildcard matching
chunk_data: Let the application define custom chunk data pointer
fnmatch_data: FNMATCH_FUNCTION user pointer
resolve: send linked-list of name:port:address sets
tlsauth_username: Set a username for authenticated TLS
tlsauth_password: Set a password for authenticated TLS
tlsauth_type: Set authentication type for authenticated TLS
lastentry: the last unused
writedata readdata headerdata rtspheader: convenient alias

alias CURLoption = int;

enum CurlOption CURLOPT_SERVER_RESPONSE_TIMEOUT;

enum CurlIpResolve: int;

Below here follows defines for the CURLOPT_IPRESOLVE option. If a host name resolves addresses using more than one IP protocol version, this option might be handy to force libcurl to use a specific IP version.

whatever: default, resolves addresses to all IP versions that your system allows
v4: resolve to ipv4 addresses
v6: resolve to ipv6 addresses

enum CurlOption CURLOPT_WRITEDATA; enum CurlOption CURLOPT_READDATA; enum CurlOption CURLOPT_HEADERDATA; enum CurlOption CURLOPT_RTSPHEADER;

three convenient "aliases" that follow the name scheme better

enum CurlHttpVersion: int;

These enums are for use with the CURLOPT_HTTP_VERSION option.

none: setting this means we don't care, and that we'd like the library to choose the best possible for us!
v1_0: please use HTTP 1.0 in the request
v1_1: please use HTTP 1.1 in the request
last: *ILLEGAL* http version

enum CurlRtspReq: int;

Public API enums for RTSP requests

none
options
describe
announce
setup
play
pause
teardown
get_parameter
set_parameter
record
receive
last

enum CurlNetRcOption: int;

These enums are for use with the CURLOPT_NETRC option.

ignored: The .netrc will never be read. This is the default.
optional: A user:password in the URL will be preferred to one in the .netrc.
required: A user:password in the URL will be ignored. Unless one is set programmatically, the .netrc will be queried.
last

enum CurlSslVersion: int;

default_version
tlsv1
sslv2
sslv3
last: never use

enum CurlTlsAuth: int;

none
srp
last: never use

enum CurlRedir: int;

symbols to use with CURLOPT_POSTREDIR. CURL_REDIR_POST_301 and CURL_REDIR_POST_302 can be bitwise ORed so that CURL_REDIR_POST_301 | CURL_REDIR_POST_302 == CURL_REDIR_POST_ALL

get_all
post_301
post_302
post_all

enum CurlTimeCond: int;

none
ifmodsince
ifunmodsince
lastmod
last

alias curl_TimeCond = int;

int curl_strequal(in char* s1, in char* s2);

curl_strequal() and curl_strnequal() are subject for removal in a future libcurl, see lib/README.curlx for details

int curl_strnequal(in char* s1, in char* s2, size_t n);

ditto

curl_strequal() and curl_strnequal() are subject for removal in a future libcurl, see lib/README.curlx for details

struct curl_forms;

structure to be used as parameter for CURLFORM_ARRAY

CURLformoption option;
const(char)* value;

enum CurlFormAdd: int;

Use this for multipart formpost building

Returns code for curl_formadd()

Returns:

CURL_FORMADD_OK on success
CURL_FORMADD_MEMORY if the FormInfo allocation fails
CURL_FORMADD_OPTION_TWICE if one option is given twice for one Form
CURL_FORMADD_NULL if a null pointer was given for a char
CURL_FORMADD_MEMORY if the allocation of a FormInfo struct failed
CURL_FORMADD_UNKNOWN_OPTION if an unknown option was used
CURL_FORMADD_INCOMPLETE if the some FormInfo is not complete (or error)
CURL_FORMADD_MEMORY if a curl_httppost struct cannot be allocated
CURL_FORMADD_MEMORY if some allocation for string copying failed.
CURL_FORMADD_ILLEGAL_ARRAY if an illegal option is used in an array

ok: first, no error
memory
option_twice
null_ptr
unknown_option
incomplete
illegal_array
disabled: libcurl was built with this disabled
last

alias CURLFORMcode = int;

CURLFORMcode curl_formadd(curl_httppost** httppost, curl_httppost** last_post, ...);

Name curl_formadd()

Description Pretty advanced function for building multi-part formposts. Each invoke adds one part that together construct a full post. Then use CURLOPT_HTTPPOST to send it off to libcurl.

alias curl_formget_callback = extern (C) ulong function(void* arg, const(char*) buf, ulong len);

callback function for curl_formget() The void *arg pointer will be the one passed as second argument to curl_formget(). The character buffer passed to it must not be freed. Should return the buffer length passed to it as the argument "len" on success.

int curl_formget(curl_httppost* form, void* arg, curl_formget_callback append);

Name curl_formget()

Description Serialize a curl_httppost struct built with curl_formadd(). Accepts a void pointer as second argument which will be passed to the curl_formget_callback function. Returns 0 on success.

void curl_formfree(curl_httppost* form);

Name curl_formfree()

Description Free a multipart formpost previously built with curl_formadd().

char* curl_getenv(in char* variable);

Name curl_getenv()

Description Returns a malloc()'ed string that MUST be curl_free()ed after usage is complete. DEPRECATED - see lib/README.curlx

char* curl_version();

Name curl_version()

Description Returns a static ascii string of the libcurl version.

char* curl_easy_escape(CURL* handle, in char* string, int length);

Name curl_easy_escape()

Description Escapes URL strings (converts all letters consider illegal in URLs to their %XX versions). This function returns a new allocated string or NULL if an error occurred.

char* curl_escape(in char* string, int length);

the previous version:

char* curl_easy_unescape(CURL* handle, in char* string, int length, int* outlength);

Name curl_easy_unescape()

Description Unescapes URL encoding in strings (converts all %XX codes to their 8bit versions). This function returns a new allocated string or NULL if an error occurred. Conversion Note: On non-ASCII platforms the ASCII %XX codes are converted into the host encoding.

char* curl_unescape(in char* string, int length);

the previous version

void curl_free(void* p);

Name curl_free()

Description Provided for de-allocation in the same translation unit that did the allocation. Added in libcurl 7.10

CURLcode curl_global_init(c_long flags);

Name curl_global_init()

Description curl_global_init() should be invoked exactly once for each application that uses libcurl and before any call of other libcurl functions.

This function is not thread-safe!

CURLcode curl_global_init_mem(c_long flags, curl_malloc_callback m, curl_free_callback f, curl_realloc_callback r, curl_strdup_callback s, curl_calloc_callback c);

Name curl_global_init_mem()

Description curl_global_init() or curl_global_init_mem() should be invoked exactly once for each application that uses libcurl. This function can be used to initialize libcurl and set user defined memory management callback functions. Users can implement memory management routines to check for memory leaks, check for mis-use of the curl library etc. User registered callback routines with be invoked by this library instead of the system memory management routines like malloc, free etc.

void curl_global_cleanup();

Name curl_global_cleanup()

Description curl_global_cleanup() should be invoked exactly once for each application that uses libcurl

struct curl_slist;