[4] | 1 | /**
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[19] | 2 | * @file net.cpp
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[4] | 3 | * @author myusgun@gmail.com
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| 4 | * @brief network
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| 5 | */
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[19] | 6 | #include "cf/net.h"
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[4] | 7 |
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| 8 | #include <iostream>
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| 9 | #include <sstream>
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| 10 | #include <string.h>
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| 11 |
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| 12 | #ifdef _ON_WINDOWS
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| 13 | # include <WinSock2.h>
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| 14 | # pragma comment(lib, "ws2_32.lib")
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| 15 | #else
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| 16 | # include <netinet/in.h>
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| 17 | # include <sys/socket.h>
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| 18 | # include <arpa/inet.h>
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| 19 | # include <netdb.h>
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| 20 | # include <unistd.h>
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| 21 | # include <sys/un.h>
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| 22 | # include <fcntl.h>
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| 23 | # include <errno.h>
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| 24 | # include <sys/types.h>
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| 25 | # include <sys/time.h>
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| 26 | #endif
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| 27 |
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| 28 | #ifdef _ON_WINDOWS
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| 29 | typedef cf::int32_t socklen_t;
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| 30 | # define sa_family_t cf::uint16_t
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| 31 | # define ERROR_INTR WSAEINTR
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| 32 | # define ERROR_CONNECTING WSAEWOULDBLOCK
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[6] | 33 | # define SOCKET_API_CALL __stdcall
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[4] | 34 | #else
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| 35 | # define closesocket(__sock) ::close(__sock)
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| 36 | # define ERROR_INTR EINTR
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| 37 | # define ERROR_CONNECTING EINPROGRESS
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[6] | 38 | # define SOCKET_API_CALL
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[4] | 39 | #endif
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| 40 |
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| 41 | /*--------------------------------------------------------------*/
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| 42 | /**
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| 43 | * do not include "cf/macaddr.[ch]pp"
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| 44 | * just declare and call
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| 45 | */
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| 46 | long GetMACAddress(cf::char_t *addr);
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| 47 |
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[5] | 48 | static std::string convertAddressToString(struct sockaddr_in & addr)
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| 49 | {
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| 50 | cf::uint8_t * bytes = NULL;
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| 51 | cf::char_t str[32] = {0x00};
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| 52 |
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| 53 | bytes = reinterpret_cast<cf::uint8_t *>(&addr.sin_addr.s_addr);
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| 54 | snprintf(str, sizeof(str) - 1, "%u.%u.%u.%u", bytes[0],
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| 55 | bytes[1],
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| 56 | bytes[2],
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| 57 | bytes[3]);
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| 58 |
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| 59 | return str;
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| 60 | }
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| 61 |
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[4] | 62 | static cf::void_t waitForTimeout(const cf::socket_t sock,
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| 63 | const cf::int32_t timeout,
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| 64 | const cf::bool_t checkWriteFD)
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| 65 | throw (cf::exception)
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| 66 | {
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| 67 | cf::int32_t result = 0;
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| 68 | fd_set rfds;
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| 69 | fd_set wfds;
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| 70 | fd_set * wfdsPtr = checkWriteFD ? &wfds : NULL;
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| 71 |
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| 72 | struct timeval tv;
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| 73 |
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| 74 | if (timeout <= 0)
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| 75 | return;
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| 76 |
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| 77 | FD_ZERO(&rfds);
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| 78 | FD_SET(sock, &rfds);
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| 79 |
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| 80 | FD_ZERO(&wfds);
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| 81 | FD_SET(sock, &wfds);
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| 82 |
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| 83 | tv.tv_sec = timeout;
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| 84 | tv.tv_usec = 0;
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| 85 |
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[18] | 86 | result = select(static_cast<int>(sock) + 1, &rfds, wfdsPtr, NULL, &tv);
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[4] | 87 | if (result < 0)
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| 88 | THROW_EXCEPTION("select error");
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| 89 | else if (result == 0)
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| 90 | THROW_EXCEPTION("socket timed out");
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| 91 |
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| 92 | if (!FD_ISSET(sock, &rfds))
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| 93 | {
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| 94 | if (!checkWriteFD)
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| 95 | THROW_EXCEPTION("read fd is not set");
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| 96 | else if (!FD_ISSET(sock, &wfds))
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| 97 | THROW_EXCEPTION("write fd is not set");
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| 98 | }
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| 99 | }
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| 100 |
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[19] | 101 | static cf::void_t setReuseAddress(const cf::net::tcp & tcp)
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[4] | 102 | throw (cf::exception)
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| 103 | {
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| 104 | try
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| 105 | {
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[5] | 106 | cf::int32_t reuseaddr = 1;
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[4] | 107 |
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[5] | 108 | tcp.setOption(SO_REUSEADDR, &reuseaddr, sizeof(reuseaddr));
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[4] | 109 | }
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| 110 | catch (cf::exception & e)
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| 111 | {
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| 112 | FORWARD_EXCEPTION(e);
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| 113 | }
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| 114 | }
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| 115 |
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[6] | 116 | typedef cf::int32_t (SOCKET_API_CALL * getSocketNameAPI)(cf::socket_t sock,
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| 117 | struct sockaddr * addr,
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| 118 | socklen_t *len);
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[5] | 119 |
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[19] | 120 | static cf::net::host getSocketNameFromFunction(const cf::socket_t sock,
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[5] | 121 | getSocketNameAPI api)
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[4] | 122 | throw (cf::exception)
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| 123 | {
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[5] | 124 | cf::int32_t result = 0;
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| 125 | struct sockaddr_in addr;
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| 126 | socklen_t len = sizeof(struct sockaddr_in);
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[4] | 127 |
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[5] | 128 | result = api(sock, (struct sockaddr *)&addr, &len);
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| 129 | if (result < 0)
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| 130 | THROW_EXCEPTION("cannot get sockket or peer name ("
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| 131 | << cf::exception::systemCode()
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| 132 | << ")");
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| 133 |
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[19] | 134 | return cf::net::host(convertAddressToString(addr), addr.sin_port);
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[4] | 135 | }
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| 136 | /*--------------------------------------------------------------*/
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| 137 |
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[19] | 138 | cf::net::host::host(const std::string & address,
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[5] | 139 | const cf::uint16_t port)
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| 140 | : mAddress(address),
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| 141 | mPort(port)
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| 142 | {
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| 143 | }
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| 144 |
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[19] | 145 | const std::string & cf::net::host::address() const
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[5] | 146 | {
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| 147 | return mAddress;
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| 148 | }
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| 149 |
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[19] | 150 | cf::uint16_t cf::net::host::port() const
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[5] | 151 | {
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| 152 | return mPort;
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| 153 | }
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| 154 |
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[19] | 155 | cf::net::tcp::tcp(const cf::socket_t attachedSocket)
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[4] | 156 | throw (cf::exception)
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| 157 | : mSocket (attachedSocket),
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| 158 | mTimeout(0)
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| 159 | {
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| 160 | static cf::bool_t isInitialized = false;
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| 161 |
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| 162 | /* initialize socket */
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| 163 | if (!isInitialized)
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| 164 | {
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| 165 | #if defined(_WIN32) || defined(_WIN64)
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| 166 | WSADATA winsockData;
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| 167 | cf::int32_t result = WSAStartup(MAKEWORD(2, 0), &winsockData);
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| 168 | if (result)
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| 169 | THROW_EXCEPTION("cannot start-up winsock");
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| 170 | #endif
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| 171 |
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| 172 | isInitialized = true;
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| 173 | }
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| 174 |
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[18] | 175 | if (mSocket == cf::nodesc)
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[4] | 176 | mSocket = ::socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
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| 177 |
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| 178 | if (mSocket < 0)
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| 179 | THROW_EXCEPTION("cannot create a socket");
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| 180 | }
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| 181 |
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[19] | 182 | cf::net::tcp::~tcp()
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[4] | 183 | {
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| 184 | close();
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| 185 | }
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| 186 |
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[19] | 187 | cf::socket_t cf::net::tcp::descriptor() const
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[7] | 188 | {
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| 189 | return mSocket;
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| 190 | }
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| 191 |
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[19] | 192 | cf::void_t cf::net::tcp::close()
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[4] | 193 | {
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[18] | 194 | if (mSocket == cf::nodesc)
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[4] | 195 | return;
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| 196 |
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| 197 | closesocket(mSocket);
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| 198 |
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[18] | 199 | mSocket = cf::nodesc;
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[4] | 200 | }
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| 201 |
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[19] | 202 | cf::void_t cf::net::tcp::connect(const cf::net::host & peer,
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[4] | 203 | const cf::int32_t timeout)
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| 204 | throw (cf::exception)
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| 205 | {
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[14] | 206 | connect(peer.address(), peer.port(), timeout);
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| 207 | }
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[4] | 208 |
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[19] | 209 | cf::void_t cf::net::tcp::connect(const std::string & address,
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[14] | 210 | const cf::uint16_t port,
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| 211 | const cf::int32_t timeout)
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| 212 | throw (cf::exception)
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| 213 | {
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[4] | 214 | cf::int32_t result = 0;
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| 215 | cf::int32_t retval = 0;
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| 216 | cf::int32_t length = 0;
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| 217 | struct sockaddr_in addr;
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| 218 | struct hostent * hostEnt;
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| 219 |
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[14] | 220 | const cf::char_t * host = address.c_str();
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[5] | 221 |
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[4] | 222 | /* 1. set data */
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| 223 | addr.sin_family = AF_INET;
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| 224 | addr.sin_port = htons(port);
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| 225 | addr.sin_addr.s_addr = inet_addr(host);
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| 226 |
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| 227 | /* 2. get ip from hostname if inet_addr() is failed */
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| 228 | if (addr.sin_addr.s_addr == (unsigned int)-1)
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| 229 | {
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| 230 | hostEnt = gethostbyname(host);
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| 231 | if (hostEnt == NULL)
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| 232 | THROW_EXCEPTION("cannot get host by name");
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| 233 |
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| 234 | addr.sin_family = (sa_family_t)hostEnt->h_addrtype;
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| 235 | memcpy(&(addr.sin_addr.s_addr),
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| 236 | hostEnt->h_addr,
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| 237 | (size_t)hostEnt->h_length);
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| 238 | }
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| 239 |
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[5] | 240 | setTimeout(timeout);
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[4] | 241 |
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[13] | 242 | /* 3. connect */
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[4] | 243 | result = ::connect(mSocket, (struct sockaddr *)&addr, sizeof(addr));
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| 244 | if (result < 0)
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| 245 | {
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| 246 | if (timeout > 0)
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| 247 | {
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| 248 | if (cf::exception::systemCode() != ERROR_CONNECTING)
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| 249 | THROW_EXCEPTION("socket connect error");
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| 250 |
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| 251 | try
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| 252 | {
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| 253 | length = sizeof(retval);
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| 254 | waitForTimeout(mSocket, timeout, true);
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| 255 | getOption(SO_ERROR, &retval, &length);
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| 256 | }
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| 257 | catch (cf::exception & e)
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| 258 | {
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| 259 | FORWARD_EXCEPTION(e);
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| 260 | }
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| 261 |
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| 262 | if (retval)
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[13] | 263 | THROW_EXCEPTION("SO_ERROR: " << retval);
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[4] | 264 | }
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| 265 | else
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| 266 | {
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| 267 | THROW_EXCEPTION("cannot connect to " << host << ":" << port);
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| 268 | }
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| 269 | }
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| 270 | }
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| 271 |
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[19] | 272 | cf::void_t cf::net::tcp::bind(const cf::uint16_t port) const
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[4] | 273 | throw (cf::exception)
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| 274 | {
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| 275 | if (!port)
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| 276 | THROW_EXCEPTION("invalid port number");
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| 277 |
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| 278 | cf::int32_t result = 0;
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| 279 | struct sockaddr_in addr;
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| 280 |
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| 281 | /* 1. set data */
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| 282 | addr.sin_family = AF_INET;
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| 283 | addr.sin_addr.s_addr = htonl(INADDR_ANY);
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| 284 | addr.sin_port = htons(port);
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| 285 |
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| 286 | /* 2. set options */
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| 287 | try
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| 288 | {
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| 289 | setReuseAddress(*this);
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| 290 | }
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| 291 | catch (cf::exception & e)
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| 292 | {
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| 293 | FORWARD_EXCEPTION(e);
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| 294 | }
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| 295 |
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| 296 | result = ::bind(mSocket, (struct sockaddr *)&addr, sizeof(struct sockaddr));
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| 297 | if (result < 0)
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| 298 | THROW_EXCEPTION("cannot bind to " << port);
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[9] | 299 | }
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[4] | 300 |
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[19] | 301 | cf::void_t cf::net::tcp::listen(const cf::int32_t backlog) const
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[9] | 302 | throw (cf::exception)
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| 303 | {
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| 304 | cf::int32_t result = ::listen(mSocket, backlog);
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[4] | 305 | if (result < 0)
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| 306 | THROW_EXCEPTION("cannot listen");
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| 307 | }
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| 308 |
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[19] | 309 | cf::net::tcp cf::net::tcp::accept() const
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[4] | 310 | throw (cf::exception)
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| 311 | {
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| 312 | cf::socket_t sock = 0;
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| 313 | struct sockaddr_in addr;
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| 314 | socklen_t len = sizeof(addr);
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| 315 |
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| 316 | sock = ::accept(mSocket, (struct sockaddr *)&addr, /* in/out */&len);
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| 317 | if (sock < 0)
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| 318 | THROW_EXCEPTION("cannot accept client");
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| 319 |
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[19] | 320 | return cf::net::tcp(sock).detach();
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[4] | 321 | }
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| 322 |
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[19] | 323 | cf::void_t cf::net::tcp::attach(const cf::socket_t sock)
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[4] | 324 | throw (exception)
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| 325 | {
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[18] | 326 | if (sock == cf::nodesc)
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[4] | 327 | THROW_EXCEPTION("has invalid socket");
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| 328 |
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| 329 | mSocket = sock;
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| 330 | }
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| 331 |
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[19] | 332 | cf::socket_t cf::net::tcp::detach()
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[4] | 333 | throw (exception)
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| 334 | {
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[18] | 335 | if (mSocket == cf::nodesc)
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[4] | 336 | THROW_EXCEPTION("has invalid socket");
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| 337 |
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| 338 | cf::socket_t sock = mSocket;
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| 339 |
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[18] | 340 | mSocket = cf::nodesc;
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[4] | 341 |
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| 342 | return sock;
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| 343 | }
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| 344 |
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[19] | 345 | cf::void_t cf::net::tcp::send(const cf::bin & in) const
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[4] | 346 | throw (cf::exception)
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| 347 | {
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[15] | 348 | if (in.size() == 0)
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| 349 | THROW_EXCEPTION("send data is zero-bytes");
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[4] | 350 |
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| 351 | cf::char_t * buf = reinterpret_cast<cf::char_t *>(in.buffer());
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| 352 | cf::int32_t size = static_cast<cf::int32_t>(in.size());
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| 353 |
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[14] | 354 | cf::int32_t sentSize = (cf::int32_t)::send(mSocket, buf, size, 0);
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[4] | 355 | if (sentSize != size)
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| 356 | THROW_EXCEPTION("cannot send (" << cf::exception::systemCode() << ")");
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| 357 | }
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| 358 |
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[19] | 359 | cf::void_t cf::net::tcp::receive(cf::bin & out) const
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[4] | 360 | throw (cf::exception)
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| 361 | {
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| 362 | if (out.size() == 0)
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| 363 | THROW_EXCEPTION("binary buffer is not created");
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| 364 |
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| 365 | try
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| 366 | {
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| 367 | waitForTimeout(mSocket, mTimeout, false);
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| 368 | }
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| 369 | catch (cf::exception & e)
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| 370 | {
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| 371 | FORWARD_EXCEPTION(e);
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| 372 | }
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| 373 |
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| 374 | cf::char_t * buf = reinterpret_cast<cf::char_t *>(out.buffer());
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| 375 | cf::int32_t size = static_cast<cf::int32_t>(out.size());
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| 376 |
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| 377 | cf::int32_t receivedSize = (cf::int32_t)::recv(mSocket, buf, size, 0);
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| 378 | if (receivedSize < 0)
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| 379 | THROW_EXCEPTION("cannot receive (" << cf::exception::systemCode() << ")");
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| 380 | else if (receivedSize == 0)
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[10] | 381 | THROW_EXCEPTION("connection closed");
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[4] | 382 | else if (receivedSize < size)
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| 383 | out.resize(receivedSize);
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| 384 | }
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| 385 |
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[19] | 386 | cf::bin cf::net::tcp::receive(const cf::int32_t size) const
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[4] | 387 | throw (cf::exception)
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| 388 | {
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| 389 | cf::bin out;
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| 390 |
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| 391 | out.resize(size);
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| 392 | receive(out);
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| 393 |
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| 394 | return out;
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| 395 | }
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| 396 |
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[19] | 397 | cf::bin cf::net::tcp::receive() const
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[4] | 398 | throw (cf::exception)
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| 399 | {
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| 400 | const cf::size_t bufferSize = 1024;
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| 401 |
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| 402 | cf::bin buffer;
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| 403 | cf::bin out;
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| 404 |
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| 405 | buffer.resize(bufferSize);
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| 406 |
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| 407 | do
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| 408 | {
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| 409 | receive(buffer);
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| 410 | out.append(buffer);
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| 411 | } while (buffer.size() == bufferSize);
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| 412 |
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| 413 | return out;
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| 414 | }
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| 415 |
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[19] | 416 | cf::void_t cf::net::tcp::getOption(const cf::int32_t optname,
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[4] | 417 | cf::void_t * optval,
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[5] | 418 | cf::int32_t * optlen) const
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[4] | 419 | throw (cf::exception)
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| 420 | {
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| 421 | cf::int32_t result = getsockopt(mSocket,
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| 422 | SOL_SOCKET,
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| 423 | optname,
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| 424 | #ifdef _ON_WINDOWS
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| 425 | (cf::char_t *)optval,
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| 426 | #else
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| 427 | optval,
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| 428 | #endif
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| 429 | (socklen_t *)optlen);
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| 430 | if (result < 0)
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| 431 | THROW_EXCEPTION("cannot get socket option ("
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| 432 | << cf::exception::systemCode()
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| 433 | << ")");
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| 434 | }
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| 435 |
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[19] | 436 | cf::void_t cf::net::tcp::setOption(const cf::int32_t optname,
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[4] | 437 | const cf::void_t * optval,
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[5] | 438 | const cf::int32_t optlen) const
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[4] | 439 | throw (cf::exception)
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| 440 | {
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| 441 | cf::int32_t result = setsockopt(mSocket,
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| 442 | SOL_SOCKET,
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| 443 | optname,
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| 444 | #ifdef _ON_WINDOWS
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| 445 | (cf::char_t *)optval,
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| 446 | #else
|
---|
| 447 | optval,
|
---|
| 448 | #endif
|
---|
| 449 | (socklen_t)optlen);
|
---|
| 450 | if (result < 0)
|
---|
| 451 | THROW_EXCEPTION("cannot set socket option ("
|
---|
| 452 | << cf::exception::systemCode()
|
---|
| 453 | << ")");
|
---|
| 454 | }
|
---|
| 455 |
|
---|
[19] | 456 | cf::void_t cf::net::tcp::setNonBlocking(const cf::bool_t flag)
|
---|
[7] | 457 | {
|
---|
| 458 | #ifdef _ON_WINDOWS
|
---|
| 459 | cf::ulong_t mode = flag ? 1 : 0;
|
---|
| 460 | ioctlsocket(mSocket, FIONBIO, &mode);
|
---|
| 461 | #else
|
---|
| 462 | cf::int32_t mode = fcntl(mSocket, F_GETFL, 0);
|
---|
| 463 |
|
---|
| 464 | if (flag) mode |= O_NONBLOCK;
|
---|
| 465 | else mode &= ~O_NONBLOCK;
|
---|
| 466 |
|
---|
| 467 | fcntl(mSocket, F_SETFL, mode);
|
---|
| 468 | #endif
|
---|
| 469 | }
|
---|
| 470 |
|
---|
[19] | 471 | cf::void_t cf::net::tcp::setTimeout(const cf::int32_t seconds)
|
---|
[4] | 472 | {
|
---|
[7] | 473 | setNonBlocking(seconds > 0 /*? true : false*/);
|
---|
[5] | 474 | mTimeout = seconds;
|
---|
| 475 | }
|
---|
[4] | 476 |
|
---|
[19] | 477 | cf::net::host cf::net::tcp::peer() const
|
---|
[5] | 478 | throw (cf::exception)
|
---|
| 479 | {
|
---|
| 480 | try
|
---|
| 481 | {
|
---|
| 482 | return getSocketNameFromFunction(mSocket, getpeername);
|
---|
| 483 | }
|
---|
| 484 | catch (cf::exception & e)
|
---|
| 485 | {
|
---|
| 486 | FORWARD_EXCEPTION(e);
|
---|
| 487 | }
|
---|
[4] | 488 | }
|
---|
| 489 |
|
---|
[19] | 490 | cf::net::host cf::net::tcp::local() const
|
---|
[5] | 491 | throw (cf::exception)
|
---|
[4] | 492 | {
|
---|
[5] | 493 | try
|
---|
| 494 | {
|
---|
| 495 | return getSocketNameFromFunction(mSocket, getsockname);
|
---|
| 496 | }
|
---|
| 497 | catch (cf::exception & e)
|
---|
| 498 | {
|
---|
| 499 | FORWARD_EXCEPTION(e);
|
---|
| 500 | }
|
---|
[4] | 501 | }
|
---|
| 502 |
|
---|
[19] | 503 | std::string cf::net::nic::getMACAddress()
|
---|
[4] | 504 | throw (cf::exception)
|
---|
| 505 | {
|
---|
| 506 | static const cf::int32_t macSize = 6; /* = 48-bits */
|
---|
| 507 | static cf::bool_t isDone = false;
|
---|
| 508 | static cf::uint8_t bytes[macSize] = {0x00,};
|
---|
| 509 | static cf::char_t asciiz[macSize * 2 + 1] = {0x00,};
|
---|
| 510 |
|
---|
| 511 | if (!isDone)
|
---|
| 512 | {
|
---|
| 513 | long result = 0;
|
---|
| 514 |
|
---|
| 515 | result = GetMACAddress(reinterpret_cast<cf::char_t *>(bytes));
|
---|
| 516 | if (result)
|
---|
| 517 | THROW_EXCEPTION("cannot get mac-address");
|
---|
| 518 |
|
---|
| 519 | for (cf::int32_t iter = 0 ; iter < macSize ; iter++)
|
---|
| 520 | snprintf(asciiz + (iter * 2), sizeof(asciiz) - 1,
|
---|
| 521 | "%02x",
|
---|
| 522 | bytes[iter]);
|
---|
| 523 |
|
---|
| 524 | isDone = true;
|
---|
| 525 | }
|
---|
| 526 |
|
---|
| 527 | return std::string(asciiz);
|
---|
| 528 | }
|
---|
[7] | 529 |
|
---|
| 530 |
|
---|
[19] | 531 | cf::uint32_t cf::net::byteOrder::htonl(cf::uint32_t in)
|
---|
[7] | 532 | {
|
---|
[8] | 533 | return ::htonl(in);
|
---|
[7] | 534 | }
|
---|
| 535 |
|
---|
[19] | 536 | cf::uint16_t cf::net::byteOrder::htons(cf::uint16_t in)
|
---|
[7] | 537 | {
|
---|
[8] | 538 | return ::htons(in);
|
---|
[7] | 539 | }
|
---|
| 540 |
|
---|
[19] | 541 | cf::uint32_t cf::net::byteOrder::ntohl(cf::uint32_t in)
|
---|
[7] | 542 | {
|
---|
[8] | 543 | return ::ntohl(in);
|
---|
[7] | 544 | }
|
---|
| 545 |
|
---|
[19] | 546 | cf::uint16_t cf::net::byteOrder::ntohs(cf::uint16_t in)
|
---|
[7] | 547 | {
|
---|
[8] | 548 | return ::ntohs(in);
|
---|
[7] | 549 | }
|
---|