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Diffstat (limited to 'websocketpp/common/network.hpp')
-rw-r--r-- | websocketpp/common/network.hpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/websocketpp/common/network.hpp b/websocketpp/common/network.hpp new file mode 100644 index 00000000..26a4cb9e --- /dev/null +++ b/websocketpp/common/network.hpp @@ -0,0 +1,106 @@ +/* + * Copyright (c) 2014, Peter Thorson. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the WebSocket++ Project nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef WEBSOCKETPP_COMMON_NETWORK_HPP +#define WEBSOCKETPP_COMMON_NETWORK_HPP + +// For ntohs and htons +#if defined(_WIN32) + #include <winsock2.h> +#else + //#include <arpa/inet.h> + #include <netinet/in.h> +#endif + +#include <websocketpp/common/stdint.hpp> + +namespace websocketpp { +namespace lib { +namespace net { + +inline bool is_little_endian() { + short int val = 0x1; + char *ptr = reinterpret_cast<char *>(&val); + return (ptr[0] == 1); +} + +#define TYP_INIT 0 +#define TYP_SMLE 1 +#define TYP_BIGE 2 + +/// Convert 64 bit value to network byte order +/** + * This method is prefixed to avoid conflicts with operating system level + * macros for this functionality. + * + * TODO: figure out if it would be beneficial to use operating system level + * macros for this. + * + * @param src The integer in host byte order + * @return src converted to network byte order + */ +inline uint64_t _htonll(uint64_t src) { + static int typ = TYP_INIT; + unsigned char c; + union { + uint64_t ull; + unsigned char c[8]; + } x; + if (typ == TYP_INIT) { + x.ull = 0x01; + typ = (x.c[7] == 0x01ULL) ? TYP_BIGE : TYP_SMLE; + } + if (typ == TYP_BIGE) + return src; + x.ull = src; + c = x.c[0]; x.c[0] = x.c[7]; x.c[7] = c; + c = x.c[1]; x.c[1] = x.c[6]; x.c[6] = c; + c = x.c[2]; x.c[2] = x.c[5]; x.c[5] = c; + c = x.c[3]; x.c[3] = x.c[4]; x.c[4] = c; + return x.ull; +} + +/// Convert 64 bit value to host byte order +/** + * This method is prefixed to avoid conflicts with operating system level + * macros for this functionality. + * + * TODO: figure out if it would be beneficial to use operating system level + * macros for this. + * + * @param src The integer in network byte order + * @return src converted to host byte order + */ +inline uint64_t _ntohll(uint64_t src) { + return _htonll(src); +} + +} // net +} // lib +} // websocketpp + +#endif // WEBSOCKETPP_COMMON_NETWORK_HPP |