#ifndef HEADER_CURL_CONNECT_H #define HEADER_CURL_CONNECT_H /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2019, 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 https://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. * ***************************************************************************/ #include "curl_setup.h" #include "nonblock.h" /* for curlx_nonblock(), formerly Curl_nonblock() */ #include "sockaddr.h" #include "timeval.h" CURLcode Curl_is_connected(struct connectdata *conn, int sockindex, bool *connected); CURLcode Curl_connecthost(struct connectdata *conn, const struct Curl_dns_entry *host); /* generic function that returns how much time there's left to run, according to the timeouts set */ timediff_t Curl_timeleft(struct Curl_easy *data, struct curltime *nowp, bool duringconnect); #define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */ /* * Used to extract socket and connectdata struct for the most recent * transfer on the given Curl_easy. * * The returned socket will be CURL_SOCKET_BAD in case of failure! */ curl_socket_t Curl_getconnectinfo(struct Curl_easy *data, struct connectdata **connp); /* * Check if a connection seems to be alive. */ bool Curl_connalive(struct connectdata *conn); #ifdef USE_WINSOCK /* When you run a program that uses the Windows Sockets API, you may experience slow performance when you copy data to a TCP server. https://support.microsoft.com/kb/823764 Work-around: Make the Socket Send Buffer Size Larger Than the Program Send Buffer Size */ void Curl_sndbufset(curl_socket_t sockfd); #else #define Curl_sndbufset(y) Curl_nop_stmt #endif void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd); void Curl_persistconninfo(struct connectdata *conn); int Curl_closesocket(struct connectdata *conn, curl_socket_t sock); /* * The Curl_sockaddr_ex structure is basically libcurl's external API * curl_sockaddr structure with enough space available to directly hold any * protocol-specific address structures. The variable declared here will be * used to pass / receive data to/from the fopensocket callback if this has * been set, before that, it is initialized from parameters. */ struct Curl_sockaddr_ex { int family; int socktype; int protocol; unsigned int addrlen; union { struct sockaddr addr; struct Curl_sockaddr_storage buff; } _sa_ex_u; }; #define sa_addr _sa_ex_u.addr /* * Create a socket based on info from 'conn' and 'ai'. * * Fill in 'addr' and 'sockfd' accordingly if OK is returned. If the open * socket callback is set, used that! * */ CURLcode Curl_socket(struct connectdata *conn, const Curl_addrinfo *ai, struct Curl_sockaddr_ex *addr, curl_socket_t *sockfd); /* * Curl_conncontrol() marks the end of a connection/stream. The 'closeit' * argument specifies if it is the end of a connection or a stream. * * For stream-based protocols (such as HTTP/2), a stream close will not cause * a connection close. Other protocols will close the connection for both * cases. * * It sets the bit.close bit to TRUE (with an explanation for debug builds), * when the connection will close. */ #define CONNCTRL_KEEP 0 /* undo a marked closure */ #define CONNCTRL_CONNECTION 1 #define CONNCTRL_STREAM 2 void Curl_conncontrol(struct connectdata *conn, int closeit #if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS) , const char *reason #endif ); #if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS) #define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM, y) #define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION, y) #define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP, y) #else /* if !DEBUGBUILD || CURL_DISABLE_VERBOSE_STRINGS */ #define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM) #define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION) #define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP) #endif bool Curl_conn_data_pending(struct connectdata *conn, int sockindex); #endif /* HEADER_CURL_CONNECT_H */