Function read_with_limit

dlib/server/server_http.cpp:122–151

        }
      
        void read_with_limit(
            std::istream& in, 
            std::string& buffer, 
            int delim = '\n'
        ) 
        {
            using namespace std;
            const size_t max = 64*1024;
            buffer.clear();
            buffer.reserve(300);

            while (in.peek() != delim && in.peek() != '\n' && in.peek() != EOF && buffer.size() < max)
            {
                buffer += (char)in.get();
            }

            // if we quit the loop because the data is longer than expected or we hit EOF
            if (in.peek() == EOF)
                throw http_parse_error("HTTP field from client terminated incorrectly", 414);
            if (buffer.size() == max)
                throw http_parse_error("HTTP field from client is too long", 414);

            in.get();
            // eat any remaining whitespace
            if (delim == ' ')
            {
                while (in.peek() == ' ')
                    in.get();
            }
        }
    }

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