Add buffer_size

test/doc/core_1_refresher.cpp

@@ -95,8 +95,7 @@ std::string string_from_buffers (ConstBufferSequence const& buffers)
 
     // optimization: reserve all the space for the string first
     std::string result;
-    using net::buffer_size;                 // buffer_size is a customization point,
-    result.reserve(buffer_size(buffers));   // called without namespace qualification
+    result.reserve(beast::buffer_size(buffers));        // beast version of net::buffer_size
 
     // iterate over each buffer in the sequence and append it to the string
     for(auto it = net::buffer_sequence_begin(buffers);  // returns an iterator to beginning of the sequence

test/doc/exemplars.cpp

@@ -7,6 +7,7 @@
 // Official repository: https://github.com/boostorg/beast
 //
 
+#include <boost/beast/core/buffer_size.hpp>
 #include <boost/beast/core/error.hpp>
 #include <boost/beast/core/file_base.hpp>
 #include <boost/beast/http/message.hpp>
@@ -164,7 +165,6 @@ struct BodyReader
         // The specification requires this to indicate "no error"
         ec = {};
 
-        using net::buffer_size;
         return buffer_size(buffers);
     }
 

test/doc/http_snippets.cpp

@@ -272,7 +272,6 @@ void fxx() {
     auto const cb3 = get_next_chunk_body();
 
     // Manually emit a chunk by first writing the chunk-size header with the correct size
-    using net::buffer_size;
     net::write(sock, chunk_header{
         buffer_size(cb1) +
         buffer_size(cb2) +
@@ -368,7 +367,6 @@ print_cxx14(message<isRequest, Body, Fields> const& m)
             {
                 ec = {};
                 std::cout << buffers(buffer);
-                using net::buffer_size;
                 sr.consume(buffer_size(buffer));
             });
     }
@@ -396,7 +394,6 @@ struct lambda
     {
         ec = {};
         std::cout << buffers(buffer);
-        using net::buffer_size;
         sr.consume(buffer_size(buffer));
     }
 };
@@ -438,7 +435,6 @@ split_print_cxx14(message<isRequest, Body, Fields> const& m)
             {
                 ec = {};
                 std::cout << buffers(buffer);
-                using net::buffer_size;
                 sr.consume(buffer_size(buffer));
             });
     }
@@ -453,7 +449,6 @@ split_print_cxx14(message<isRequest, Body, Fields> const& m)
                 {
                     ec = {};
                     std::cout << buffers(buffer);
-                    using net::buffer_size;
                     sr.consume(buffer_size(buffer));
                 });
         }

test/doc/websocket_snippets.cpp

@@ -202,7 +202,6 @@ boost::ignore_unused(ec);
     // This will cause the message to be broken up into multiple frames.
     for(;;)
     {
-        using net::buffer_size;
         if(buffer_size(cb) > 512)
         {
             // There are more than 512 bytes left to send, just