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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.

Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.

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;
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.
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
obsolete4
4 - NOT USED
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_telnet_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_, type is one of the defined CURLOPTTYPE_ 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
35 = OBSOLETE
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
38 is not used
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
55 = OBSOLETE
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
66 = OBSOLETE
67 = OBSOLETE

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
73 = OBSOLETE
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
122 OBSOLETE, used in 7.12.3. Gone in 7.13.0
123 OBSOLETE. Gone in 7.16.0

124 OBSOLETE, used in 7.12.3. Gone in 7.13.0

125 OBSOLETE, used in 7.12.3. Gone in 7.13.0

126 OBSOLETE, used in 7.12.3. Gone in 7.13.0

127 OBSOLETE. Gone in 7.16.0

128 OBSOLETE. Gone in 7.16.0

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
132 OBSOLETE. Gone in 7.16.0
133 OBSOLETE. Gone in 7.16.0

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=) 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.

@trusted 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.

@trusted char* curl_escape(in char* string, int length);
the previous version:
@trusted 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.

@trusted 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;
linked-list structure for the CURLOPT_QUOTE option (and other)
curl_slist* curl_slist_append(curl_slist*, in char*);

Name: curl_slist_append()

Description: Appends a string to a linked list. If no list exists, it will be created first. Returns the new list, after appending.

linked-list structure for the CURLOPT_QUOTE option (and other)
void curl_slist_free_all(curl_slist*);

Name: curl_slist_free_all()

Description: free a previously built curl_slist.

linked-list structure for the CURLOPT_QUOTE option (and other)
time_t curl_getdate(char* p, time_t* unused);

Name: curl_getdate()

Description: Returns the time, in seconds since 1 Jan 1970 of the time string given in the first argument. The time argument in the second parameter is unused and should be set to NULL.

linked-list structure for the CURLOPT_QUOTE option (and other)
struct curl_certinfo;
info about the certificate chain, only for OpenSSL builds. Asked for with CURLOPT_CERTINFO / CURLINFO_CERTINFO
linked-list structure for the CURLOPT_QUOTE option (and other)
int num_of_certs;
number of certificates with information
curl_slist** certinfo;
for each index in this array, there's a linked list with textual information in the format "name: value"
enum int CURLINFO_STRING;

enum int CURLINFO_LONG;

enum int CURLINFO_DOUBLE;

enum int CURLINFO_SLIST;

enum int CURLINFO_MASK;

enum int CURLINFO_TYPEMASK;

enum CurlInfo: int;

none

effective_url

response_code

total_time

namelookup_time

connect_time

pretransfer_time

size_upload

size_download

speed_download

speed_upload

header_size

request_size

ssl_verifyresult

filetime

content_length_download

content_length_upload

starttransfer_time

content_type

redirect_time

redirect_count

private_info

http_connectcode

httpauth_avail

proxyauth_avail

os_errno

num_connects

ssl_engines

cookielist

lastsocket

ftp_entry_path

redirect_url

primary_ip

appconnect_time

certinfo

condition_unmet

rtsp_session_id

rtsp_client_cseq

rtsp_server_cseq

rtsp_cseq_recv

primary_port

local_ip

local_port

lastone
Fill in new entries below here!
alias CURLINFO = int;

enum CurlInfo CURLINFO_HTTP_CODE;
CURLINFO_RESPONSE_CODE is the new name for the option previously known as CURLINFO_HTTP_CODE
enum CurlClosePolicy: int;

none

oldest

least_recently_used

least_traffic

slowest

callback

last

alias curl_closepolicy = int;

enum CurlGlobal: int;

ssl

win32

all

nothing

default_
all
enum CurlLockData: int;
Setup defines, protos etc for the sharing stuff.
Different data locks for a single share
none

share
CURL_LOCK_DATA_SHARE is used internally to say that the locking is just made to change the internal state of the share itself.
cookie

dns

ssl_session

connect

last

alias curl_lock_data = int;

enum CurlLockAccess: int;
Different lock access types
none
unspecified action
shared_access
for read perhaps
single
for write perhaps
last
never use
alias curl_lock_access = int;

alias curl_lock_function = void function(void* handle, int data, int locktype, void* userptr);

alias curl_unlock_function = void function(void* handle, int data, void* userptr);

alias CURLSH = void;

enum CurlShError: int;

ok
all is fine
bad_option
1
in_use
2
invalid
3
nomem
out of memory
last
never use
alias CURLSHcode = int;

enum CurlShOption: int;
pass in a user data pointer used in the lock/unlock callback functions
none
don't use
share
specify a data type to share
unshare
specify which data type to stop sharing
lockfunc
pass in a 'curl_lock_function' pointer
unlockfunc
pass in a 'curl_unlock_function' pointer
userdata
pass in a user data pointer used in the lock/unlock callback functions
last
never use
alias CURLSHoption = int;

CURLSH* curl_share_init();

CURLSHcode curl_share_setopt(CURLSH*, CURLSHoption option, ...);

CURLSHcode curl_share_cleanup(CURLSH*);

enum CurlVer: int;
Structures for querying information about the curl library at runtime.
first

second

third

fourth

last

alias CURLversion = int;

enum CurlVer CURLVERSION_NOW;
The 'CURLVERSION_NOW' is the symbolic name meant to be used by basically all programs ever that want to get version information. It is meant to be a built-in version number for what kind of struct the caller expects. If the struct ever changes, we redefine the NOW to another enum from above.
struct _N28;

CURLversion age;
age of the returned struct
const(char)* version_;
LIBCURL_VERSION
uint version_num;
LIBCURL_VERSION_NUM
const(char)* host;
OS/host/cpu/machine when configured
int features;
bitmask, see defines below
const(char)* ssl_version;
human readable string
c_long ssl_version_num;
not used anymore, always 0
const(char)* libz_version;
human readable string
const(char)** protocols;
protocols is terminated by an entry with a NULL protoname
const(char)* ares;
The fields below this were added in CURLVERSION_SECOND
const(char)* libidn;
This field was added in CURLVERSION_THIRD
int iconv_ver_num;
These field were added in CURLVERSION_FOURTH
Same as 'libiconv_version' if built with HAVE_ICONV
const(char)* libssh_version;
human readable string
alias curl_version_info_data = _N28;

enum CurlVersion: int;

ipv6
IPv6-enabled
kerberos4
kerberos auth is supported
ssl
SSL options are present
libz
libz features are present
ntlm
NTLM auth is supported
gssnegotiate
Negotiate auth support
dbg
built with debug capabilities
asynchdns
asynchronous dns resolves
spnego
SPNEGO auth
largefile
supports files bigger than 2GB
idn
International Domain Names support
sspi
SSPI is supported
conv
character conversions supported
curldebug
debug memory tracking supported
tlsauth_srp
TLS-SRP auth is supported
curl_version_info_data* curl_version_info(CURLversion);

Name: curl_version_info()

Description: This function returns a pointer to a static copy of the version info struct. See above.

const(char)* curl_easy_strerror(CURLcode);

Name: curl_easy_strerror()

Description: The curl_easy_strerror function may be used to turn a CURLcode value into the equivalent human readable error string. This is useful for printing meaningful error messages.

const(char)* curl_share_strerror(CURLSHcode);

Name: curl_share_strerror()

Description: The curl_share_strerror function may be used to turn a CURLSHcode value into the equivalent human readable error string. This is useful for printing meaningful error messages.

CURLcode curl_easy_pause(CURL* handle, int bitmask);

Name: curl_easy_pause()

Description: The curl_easy_pause function pauses or unpauses transfers. Select the new state by setting the bitmask, use the convenience defines below.

enum CurlPause: int;

recv

recv_cont

send

send_cont

all

cont

CURL* curl_easy_init();

CURLcode curl_easy_setopt(CURL* curl, CURLoption option, ...);

CURLcode curl_easy_perform(CURL* curl);

void curl_easy_cleanup(CURL* curl);

CURLcode curl_easy_getinfo(CURL* curl, CURLINFO info, ...);

Name: curl_easy_getinfo()

Description: Request internal information from the curl session with this function. The third argument MUST be a pointer to a long, a pointer to a char * or a pointer to a double (as the documentation describes elsewhere). The data pointed to will be filled in accordingly and can be relied upon only if the function returns CURLE_OK. This function is intended to get used *AFTER* a performed transfer, all results from this function are undefined until the transfer is completed.

CURL* curl_easy_duphandle(CURL* curl);

Name: curl_easy_duphandle()

Description: Creates a new curl session handle with the same options set for the handle passed in. Duplicating a handle could only be a matter of cloning data and options, internal state info and things like persistant connections cannot be transfered. It is useful in multithreaded applications when you can run curl_easy_duphandle() for each new thread to avoid a series of identical curl_easy_setopt() invokes in every thread.

void curl_easy_reset(CURL* curl);

Name: curl_easy_reset()

Description: Re-initializes a CURL handle to the default values. This puts back the handle to the same state as it was in when it was just created.

It does keep: live connections, the Session ID cache, the DNS cache and the cookies.
CURLcode curl_easy_recv(CURL* curl, void* buffer, size_t buflen, size_t* n);

Name: curl_easy_recv()

Description: Receives data from the connected socket. Use after successful curl_easy_perform() with CURLOPT_CONNECT_ONLY option.

CURLcode curl_easy_send(CURL* curl, void* buffer, size_t buflen, size_t* n);

Name: curl_easy_send()

Description: Sends data over the connected socket. Use after successful curl_easy_perform() with CURLOPT_CONNECT_ONLY option.

alias CURLM = void;

enum CurlM: int;

call_multi_perform
please call curl_multi_perform() or curl_multi_socket*() soon
ok

bad_handle
the passed-in handle is not a valid CURLM handle
bad_easy_handle
an easy handle was not good/valid
out_of_memory
if you ever get this, you're in deep sh*t
internal_error
this is a libcurl bug
bad_socket
the passed in socket argument did not match
unknown_option
curl_multi_setopt() with unsupported option
last

alias CURLMcode = int;

enum CurlM CURLM_CALL_MULTI_SOCKET;
just to make code nicer when using curl_multi_socket() you can now check for CURLM_CALL_MULTI_SOCKET too in the same style it works for curl_multi_perform() and CURLM_CALL_MULTI_PERFORM
enum CurlMsg: int;

none

done
This easy handle has completed. 'result' contains the CURLcode of the transfer
last
no used
alias CURLMSG = int;

union _N31;

void* whatever;
message-specific data
CURLcode result;
return code for transfer
struct CURLMsg;

CURLMSG msg;
what this message means
CURL* easy_handle;
the handle it concerns
_N31 data;

CURLM* curl_multi_init();

Name: curl_multi_init()

Desc: inititalize multi-style curl usage

Returns:
a new CURLM handle to use in all 'curl_multi' functions.
CURLMcode curl_multi_add_handle(CURLM* multi_handle, CURL* curl_handle);

Name: curl_multi_add_handle()

Desc: add a standard curl handle to the multi stack

Returns:
CURLMcode type, general multi error code.
CURLMcode curl_multi_remove_handle(CURLM* multi_handle, CURL* curl_handle);

Name: curl_multi_remove_handle()

Desc: removes a curl handle from the multi stack again

Returns:
CURLMcode type, general multi error code.
alias fd_set = int;

Name: curl_multi_fdset()

Desc: Ask curl for its fd_set sets. The app can use these to select() or poll() on. We want curl_multi_perform() called as soon as one of them are ready.

Returns:
CURLMcode type, general multi error code.

tmp decl
CURLMcode curl_multi_fdset(CURLM* multi_handle, fd_set* read_fd_set, fd_set* write_fd_set, fd_set* exc_fd_set, int* max_fd);

CURLMcode curl_multi_perform(CURLM* multi_handle, int* running_handles);

Name: curl_multi_perform()

Desc: When the app thinks there's data available for curl it calls this function to read/write whatever there is right now. This returns as soon as the reads and writes are done. This function does not require that there actually is data available for reading or that data can be written, it can be called just in case. It returns the number of handles that still transfer data in the second argument's integer-pointer.

Returns:
CURLMcode type, general multi error code. *NOTE* that this only returns errors etc regarding the whole multi stack. There might still have occurred problems on invidual transfers even when this returns OK.
CURLMcode curl_multi_cleanup(CURLM* multi_handle);

Name: curl_multi_cleanup()

Desc: Cleans up and removes a whole multi stack. It does not free or touch any individual easy handles in any way. We need to define in what state those handles will be if this function is called in the middle of a transfer.

Returns:
CURLMcode type, general multi error code.
CURLMsg* curl_multi_info_read(CURLM* multi_handle, int* msgs_in_queue);

Name: curl_multi_info_read()

Desc: Ask the multi handle if there's any messages/informationals from the individual transfers. Messages include informationals such as error code from the transfer or just the fact that a transfer is completed. More details on these should be written down as well.

Repeated calls to this function will return a new struct each time, until a special "end of msgs" struct is returned as a signal that there is no more to get at this point.

The data the returned pointer points to will not survive calling curl_multi_cleanup().

The 'CURLMsg' struct is meant to be very simple and only contain very basic informations. If more involved information is wanted, we will provide the particular "transfer handle" in that struct and that should/could/would be used in subsequent curl_easy_getinfo() calls (or similar). The point being that we must never expose complex structs to applications, as then we'll undoubtably get backwards compatibility problems in the future.
Returns:
A pointer to a filled-in struct, or NULL if it failed or ran out of structs. It also writes the number of messages left in the queue (after this read) in the integer the second argument points to.
const(char)* curl_multi_strerror(CURLMcode);

Name: curl_multi_strerror()

Desc: The curl_multi_strerror function may be used to turn a CURLMcode value into the equivalent human readable error string. This is useful for printing meaningful error messages.

Returns:
A pointer to a zero-terminated error message.
enum CurlPoll: int;

Name: curl_multi_socket() and curl_multi_socket_all()

Desc: An alternative version of curl_multi_perform() that allows the application to pass in one of the file descriptors that have been detected to have "action" on them and let libcurl perform. See man page for details.

none_
jdrewsen - underscored in order not to clash with reserved D symbols
in_

out_

inout_

remove_

alias CURL_SOCKET_TIMEOUT = CURL_SOCKET_BAD;

enum CurlCSelect: int;

in_
jdrewsen - underscored in order not to clash with reserved D symbols
out_

err_

alias curl_socket_callback = extern (C) int function(void* easy, socket_t s, int what, void* userp, void* socketp);
private socket pointer
alias curl_multi_timer_callback = extern (C) int function(void* multi, long timeout_ms, void* userp);
private callback pointer

Name: curl_multi_timer_callback

Desc: Called by libcurl whenever the library detects a change in the maximum number of milliseconds the app is allowed to wait before curl_multi_socket() or curl_multi_perform() must be called (to allow libcurl's timed events to take place).

Returns:
The callback should return zero.

private callback pointer
CURLMcode curl_multi_socket(CURLM* multi_handle, curl_socket_t s, int* running_handles);
ditto

Name: curl_multi_timer_callback

Desc: Called by libcurl whenever the library detects a change in the maximum number of milliseconds the app is allowed to wait before curl_multi_socket() or curl_multi_perform() must be called (to allow libcurl's timed events to take place).

Returns:
The callback should return zero.

private callback pointer
CURLMcode curl_multi_socket_action(CURLM* multi_handle, curl_socket_t s, int ev_bitmask, int* running_handles);
ditto

Name: curl_multi_timer_callback

Desc: Called by libcurl whenever the library detects a change in the maximum number of milliseconds the app is allowed to wait before curl_multi_socket() or curl_multi_perform() must be called (to allow libcurl's timed events to take place).

Returns:
The callback should return zero.

private callback pointer
CURLMcode curl_multi_socket_all(CURLM* multi_handle, int* running_handles);
ditto

Name: curl_multi_timer_callback

Desc: Called by libcurl whenever the library detects a change in the maximum number of milliseconds the app is allowed to wait before curl_multi_socket() or curl_multi_perform() must be called (to allow libcurl's timed events to take place).

Returns:
The callback should return zero.

private callback pointer
CURLMcode curl_multi_timeout(CURLM* multi_handle, c_long* milliseconds);
This macro below was added in 7.16.3 to push users who recompile to use the new curl_multi_socket_action() instead of the old curl_multi_socket()

Name: curl_multi_timeout()

Desc: Returns the maximum number of milliseconds the app is allowed to wait before curl_multi_socket() or curl_multi_perform() must be called (to allow libcurl's timed events to take place).

Returns:
CURLM error code.
enum CurlMOption: int;

socketfunction
This is the socket callback function pointer
socketdata
This is the argument passed to the socket callback
pipelining
set to 1 to enable pipelining for this multi handle
timerfunction
This is the timer callback function pointer
timerdata
This is the argument passed to the timer callback
maxconnects
maximum number of entries in the connection cache
lastentry

alias CURLMoption = int;

CURLMcode curl_multi_setopt(CURLM* multi_handle, CURLMoption option, ...);

Name: curl_multi_setopt()

Desc: Sets options for the multi handle.

Returns:
CURLM error code.
CURLMcode curl_multi_assign(CURLM* multi_handle, curl_socket_t sockfd, void* sockp);

Name: curl_multi_assign()

Desc: This function sets an association in the multi handle between the given socket and a private pointer of the application. This is (only) useful for curl_multi_socket uses.

Returns:
CURLM error code.