Reduce conflict between std::min and macros

Adjust usage of std::min to be more compatible with systems that define
a min(...) macro

changelog.md

@@ -1,4 +1,6 @@
 HEAD
+- Compatibility: Adjust usage of std::min to be more compatible with systems
+  that define a min(...) macro.
 
 0.3.0 - 2014-08-10
 - Feature: Adds `start_perpetual` and `stop_perpetual` methods to asio transport

websocketpp/extensions/permessage_deflate/enabled.hpp

@@ -643,7 +643,7 @@ private:
                 m_s2c_max_window_bits = bits;
                 break;
             case mode::largest:
-                m_s2c_max_window_bits = std::min(bits,m_s2c_max_window_bits);
+                m_s2c_max_window_bits = (std::min)(bits,m_s2c_max_window_bits);
                 break;
             case mode::smallest:
                 m_s2c_max_window_bits = min_s2c_max_window_bits;

websocketpp/processors/hybi00.hpp

@@ -110,7 +110,7 @@ public:
         //       of warning or exception.
         const std::string& key3 = req.get_header("Sec-WebSocket-Key3");
         std::copy(key3.c_str(),
-                  key3.c_str()+std::min(static_cast<size_t>(8), key3.size()),
+                  key3.c_str()+(std::min)(static_cast<size_t>(8), key3.size()),
                   &key_final[8]);
 
         res.append_header(

websocketpp/processors/hybi13.hpp

@@ -404,7 +404,7 @@ public:
             } else if (m_state == EXTENSION) {
                 m_state = APPLICATION;
             } else if (m_state == APPLICATION) {
-                size_t bytes_to_process = std::min(m_bytes_needed,len-p);
+                size_t bytes_to_process = (std::min)(m_bytes_needed,len-p);
 
                 if (bytes_to_process > 0) {
                     p += this->process_payload_bytes(buf+p,bytes_to_process,ec);
@@ -670,7 +670,7 @@ protected:
 
     /// Reads bytes from buf into m_extended_header
     size_t copy_extended_header_bytes(uint8_t const * buf, size_t len) {
-        size_t bytes_to_read = std::min(m_bytes_needed,len);
+        size_t bytes_to_read = (std::min)(m_bytes_needed,len);
 
         std::copy(buf,buf+bytes_to_read,m_extended_header.bytes+m_cursor);
         m_cursor += bytes_to_read;

websocketpp/transport/iostream/connection.hpp

@@ -510,7 +510,7 @@ private:
             return 0;
         }
 
-        size_t bytes_to_copy = std::min(len,m_len-m_cursor);
+        size_t bytes_to_copy = (std::min)(len,m_len-m_cursor);
 
         std::copy(buf,buf+bytes_to_copy,m_buf+m_cursor);