Annotation of embedaddon/curl/lib/connect.h, revision 1.1
1.1 ! misho 1: #ifndef HEADER_CURL_CONNECT_H
! 2: #define HEADER_CURL_CONNECT_H
! 3: /***************************************************************************
! 4: * _ _ ____ _
! 5: * Project ___| | | | _ \| |
! 6: * / __| | | | |_) | |
! 7: * | (__| |_| | _ <| |___
! 8: * \___|\___/|_| \_\_____|
! 9: *
! 10: * Copyright (C) 1998 - 2019, 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: #include "timeval.h"
! 29:
! 30: CURLcode Curl_is_connected(struct connectdata *conn,
! 31: int sockindex,
! 32: bool *connected);
! 33:
! 34: CURLcode Curl_connecthost(struct connectdata *conn,
! 35: const struct Curl_dns_entry *host);
! 36:
! 37: /* generic function that returns how much time there's left to run, according
! 38: to the timeouts set */
! 39: timediff_t Curl_timeleft(struct Curl_easy *data,
! 40: struct curltime *nowp,
! 41: bool duringconnect);
! 42:
! 43: #define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */
! 44:
! 45: /*
! 46: * Used to extract socket and connectdata struct for the most recent
! 47: * transfer on the given Curl_easy.
! 48: *
! 49: * The returned socket will be CURL_SOCKET_BAD in case of failure!
! 50: */
! 51: curl_socket_t Curl_getconnectinfo(struct Curl_easy *data,
! 52: struct connectdata **connp);
! 53:
! 54: bool Curl_addr2string(struct sockaddr *sa, curl_socklen_t salen,
! 55: char *addr, long *port);
! 56:
! 57: /*
! 58: * Check if a connection seems to be alive.
! 59: */
! 60: bool Curl_connalive(struct connectdata *conn);
! 61:
! 62: #ifdef USE_WINSOCK
! 63: /* When you run a program that uses the Windows Sockets API, you may
! 64: experience slow performance when you copy data to a TCP server.
! 65:
! 66: https://support.microsoft.com/kb/823764
! 67:
! 68: Work-around: Make the Socket Send Buffer Size Larger Than the Program Send
! 69: Buffer Size
! 70:
! 71: */
! 72: void Curl_sndbufset(curl_socket_t sockfd);
! 73: #else
! 74: #define Curl_sndbufset(y) Curl_nop_stmt
! 75: #endif
! 76:
! 77: void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd);
! 78: void Curl_persistconninfo(struct connectdata *conn);
! 79: int Curl_closesocket(struct connectdata *conn, curl_socket_t sock);
! 80:
! 81: /*
! 82: * The Curl_sockaddr_ex structure is basically libcurl's external API
! 83: * curl_sockaddr structure with enough space available to directly hold any
! 84: * protocol-specific address structures. The variable declared here will be
! 85: * used to pass / receive data to/from the fopensocket callback if this has
! 86: * been set, before that, it is initialized from parameters.
! 87: */
! 88: struct Curl_sockaddr_ex {
! 89: int family;
! 90: int socktype;
! 91: int protocol;
! 92: unsigned int addrlen;
! 93: union {
! 94: struct sockaddr addr;
! 95: struct Curl_sockaddr_storage buff;
! 96: } _sa_ex_u;
! 97: };
! 98: #define sa_addr _sa_ex_u.addr
! 99:
! 100: /*
! 101: * Create a socket based on info from 'conn' and 'ai'.
! 102: *
! 103: * Fill in 'addr' and 'sockfd' accordingly if OK is returned. If the open
! 104: * socket callback is set, used that!
! 105: *
! 106: */
! 107: CURLcode Curl_socket(struct connectdata *conn,
! 108: const Curl_addrinfo *ai,
! 109: struct Curl_sockaddr_ex *addr,
! 110: curl_socket_t *sockfd);
! 111:
! 112: /*
! 113: * Curl_conncontrol() marks the end of a connection/stream. The 'closeit'
! 114: * argument specifies if it is the end of a connection or a stream.
! 115: *
! 116: * For stream-based protocols (such as HTTP/2), a stream close will not cause
! 117: * a connection close. Other protocols will close the connection for both
! 118: * cases.
! 119: *
! 120: * It sets the bit.close bit to TRUE (with an explanation for debug builds),
! 121: * when the connection will close.
! 122: */
! 123:
! 124: #define CONNCTRL_KEEP 0 /* undo a marked closure */
! 125: #define CONNCTRL_CONNECTION 1
! 126: #define CONNCTRL_STREAM 2
! 127:
! 128: void Curl_conncontrol(struct connectdata *conn,
! 129: int closeit
! 130: #if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
! 131: , const char *reason
! 132: #endif
! 133: );
! 134:
! 135: #if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
! 136: #define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM, y)
! 137: #define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION, y)
! 138: #define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP, y)
! 139: #else /* if !DEBUGBUILD || CURL_DISABLE_VERBOSE_STRINGS */
! 140: #define streamclose(x,y) Curl_conncontrol(x, CONNCTRL_STREAM)
! 141: #define connclose(x,y) Curl_conncontrol(x, CONNCTRL_CONNECTION)
! 142: #define connkeep(x,y) Curl_conncontrol(x, CONNCTRL_KEEP)
! 143: #endif
! 144:
! 145: bool Curl_conn_data_pending(struct connectdata *conn, int sockindex);
! 146:
! 147: #endif /* HEADER_CURL_CONNECT_H */
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