1 #ifndef HEADER_CURL_CONNECT_H 2 #define HEADER_CURL_CONNECT_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al. 11 * 12 * This software is licensed as described in the file COPYING, which 13 * you should have received as part of this distribution. The terms 14 * are also available at https://curl.haxx.se/docs/copyright.html. 15 * 16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 17 * copies of the Software, and permit persons to whom the Software is 18 * furnished to do so, under the terms of the COPYING file. 19 * 20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 21 * KIND, either express or implied. 22 * 23 ***************************************************************************/ 24 #include "curl_setup.h" 25 26 #include "nonblock.h" /* for curlx_nonblock(), formerly Curl_nonblock() */ 27 #include "sockaddr.h" 28 29 CURLcode Curl_is_connected(struct connectdata *conn, 30 int sockindex, 31 bool *connected); 32 33 CURLcode Curl_connecthost(struct connectdata *conn, 34 const struct Curl_dns_entry *host); 35 36 /* generic function that returns how much time there's left to run, according 37 to the timeouts set */ 38 time_t Curl_timeleft(struct Curl_easy *data, 39 struct timeval *nowp, 40 bool duringconnect); 41 42 #define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */ 43 #define HAPPY_EYEBALLS_TIMEOUT 200 /* milliseconds to wait between 44 IPv4/IPv6 connection attempts */ 45 46 /* 47 * Used to extract socket and connectdata struct for the most recent 48 * transfer on the given Curl_easy. 49 * 50 * The returned socket will be CURL_SOCKET_BAD in case of failure! 51 */ 52 curl_socket_t Curl_getconnectinfo(struct Curl_easy *data, 53 struct connectdata **connp); 54 55 #ifdef USE_WINSOCK 56 /* When you run a program that uses the Windows Sockets API, you may 57 experience slow performance when you copy data to a TCP server. 58 59 https://support.microsoft.com/kb/823764 60 61 Work-around: Make the Socket Send Buffer Size Larger Than the Program Send 62 Buffer Size 63 64 */ 65 void Curl_sndbufset(curl_socket_t sockfd); 66 #else 67 #define Curl_sndbufset(y) Curl_nop_stmt 68 #endif 69 70 void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd); 71 void Curl_persistconninfo(struct connectdata *conn); 72 int Curl_closesocket(struct connectdata *conn, curl_socket_t sock); 73 74 /* 75 * The Curl_sockaddr_ex structure is basically libcurl's external API 76 * curl_sockaddr structure with enough space available to directly hold any 77 * protocol-specific address structures. The variable declared here will be 78 * used to pass / receive data to/from the fopensocket callback if this has 79 * been set, before that, it is initialized from parameters. 80 */ 81 struct Curl_sockaddr_ex { 82 int family; 83 int socktype; 84 int protocol; 85 unsigned int addrlen; 86 union { 87 struct sockaddr addr; 88 struct Curl_sockaddr_storage buff; 89 } _sa_ex_u; 90 }; 91 #define sa_addr _sa_ex_u.addr 92 93 /* 94 * Create a socket based on info from 'conn' and 'ai'. 95 * 96 * Fill in 'addr' and 'sockfd' accordingly if OK is returned. If the open 97 * socket callback is set, used that! 98 * 99 */ 100 CURLcode Curl_socket(struct connectdata *conn, 101 const Curl_addrinfo *ai, 102 struct Curl_sockaddr_ex *addr, 103 curl_socket_t *sockfd); 104 105 void Curl_tcpnodelay(struct connectdata *conn, curl_socket_t sockfd); 106 107 /* 108 * Curl_conncontrol() marks the end of a connection/stream. The 'closeit' 109 * argument specifies if it is the end of a connection or a stream. 110 * 111 * For stream-based protocols (such as HTTP/2), a stream close will not cause 112 * a connection close. Other protocols will close the connection for both 113 * cases. 114 * 115 * It sets the bit.close bit to TRUE (with an explanation for debug builds), 116 * when the connection will close. 117 */ 118 119 #define CONNCTRL_KEEP 0 /* undo a marked closure */ 120 #define CONNCTRL_CONNECTION 1 121 #define CONNCTRL_STREAM 2 122 123 void Curl_conncontrol(struct connectdata *conn, 124 int closeit 125 #ifdef DEBUGBUILD 126 , const char *reason 127 #endif 128 ); 129 130 #ifdef DEBUGBUILD 131 #define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM, y) 132 #define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION, y) 133 #define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP, y) 134 #else /* if !CURLDEBUG */ 135 #define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM) 136 #define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION) 137 #define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP) 138 #endif 139 140 #endif /* HEADER_CURL_CONNECT_H */ 141