Squashed 'src/websocketpp/' content from commit 875d420

git-subtree-dir: src/websocketpp
git-subtree-split: 875d420952d2c47d38de15952a401f00773cdffc

websocketpp/common/network.hpp

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+/*
+ * 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
+
+namespace websocketpp {
+namespace lib {
+namespace net {
+
+inline bool is_little_endian() {
+    short int val = 0x1;
+    char *ptr = (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