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diff --git a/websocketpp/impl/utilities_impl.hpp b/websocketpp/impl/utilities_impl.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_UTILITIES_IMPL_HPP
+#define WEBSOCKETPP_UTILITIES_IMPL_HPP
+
+#include <algorithm>
+#include <string>
+
+namespace websocketpp {
+namespace utility {
+
+inline std::string to_lower(std::string const & in) {
+    std::string out = in;
+    std::transform(out.begin(),out.end(),out.begin(),::tolower);
+    return out;
+}
+
+inline std::string to_hex(std::string const & input) {
+    std::string output;
+    std::string hex = "0123456789ABCDEF";
+
+    for (size_t i = 0; i < input.size(); i++) {
+        output += hex[(input[i] & 0xF0) >> 4];
+        output += hex[input[i] & 0x0F];
+        output += " ";
+    }
+
+    return output;
+}
+
+inline std::string to_hex(uint8_t const * input, size_t length) {
+    std::string output;
+    std::string hex = "0123456789ABCDEF";
+
+    for (size_t i = 0; i < length; i++) {
+        output += hex[(input[i] & 0xF0) >> 4];
+        output += hex[input[i] & 0x0F];
+        output += " ";
+    }
+
+    return output;
+}
+
+inline std::string to_hex(const char* input,size_t length) {
+    return to_hex(reinterpret_cast<const uint8_t*>(input),length);
+}
+
+inline std::string string_replace_all(std::string subject, std::string const &
+    search, std::string const & replace)
+{
+    size_t pos = 0;
+    while((pos = subject.find(search, pos)) != std::string::npos) {
+         subject.replace(pos, search.length(), replace);
+         pos += replace.length();
+    }
+    return subject;
+}
+
+} // namespace utility
+} // namespace websocketpp
+
+#endif // WEBSOCKETPP_UTILITIES_IMPL_HPP