Add support for gzip compression through libdeflate

ixwebsocket/IXBench.cpp

@@ -33,16 +33,29 @@ namespace ix
     void Bench::report()
     {
         auto now = std::chrono::high_resolution_clock::now();
-        auto milliseconds = std::chrono::duration_cast<std::chrono::milliseconds>(now - _start);
+        auto microseconds = std::chrono::duration_cast<std::chrono::microseconds>(now - _start);
 
-        _ms = milliseconds.count();
-        std::cerr << _description << " completed in " << _ms << "ms" << std::endl;
+        _duration = microseconds.count();
+        std::cerr << _description << " completed in " << _duration << " us" << std::endl;
 
+        setReported();
+    }
+
+    void Bench::record()
+    {
+        auto now = std::chrono::high_resolution_clock::now();
+        auto microseconds = std::chrono::duration_cast<std::chrono::microseconds>(now - _start);
+
+        _duration = microseconds.count();
+    }
+
+    void Bench::setReported()
+    {
         _reported = true;
     }
 
     uint64_t Bench::getDuration() const
     {
-        return _ms;
+        return _duration;
     }
 } // namespace ix

ixwebsocket/IXBench.h

@@ -18,13 +18,15 @@ namespace ix
         ~Bench();
 
         void reset();
+        void record();
         void report();
+        void setReported();
         uint64_t getDuration() const;
 
     private:
         std::string _description;
         std::chrono::time_point<std::chrono::high_resolution_clock> _start;
-        uint64_t _ms;
+        uint64_t _duration;
         bool _reported;
     };
 } // namespace ix

ixwebsocket/IXGzipCodec.cpp

@@ -6,6 +6,7 @@
 
 #include "IXGzipCodec.h"
 
+#include "IXBench.h"
 #include <array>
 #include <string.h>
 
@@ -13,11 +14,52 @@
 #include <zlib.h>
 #endif
 
+#ifdef IXWEBSOCKET_USE_DEFLATE
+#include <libdeflate.h>
+#endif
+
 namespace ix
 {
 #ifdef IXWEBSOCKET_USE_ZLIB
     std::string gzipCompress(const std::string& str)
     {
+#ifdef IXWEBSOCKET_USE_DEFLATE
+        int compressionLevel = 6;
+        struct libdeflate_compressor* compressor;
+
+        compressor = libdeflate_alloc_compressor(compressionLevel);
+
+        const void* uncompressed_data = str.data();
+        size_t uncompressed_size = str.size();
+        void* compressed_data;
+        size_t actual_compressed_size;
+        size_t max_compressed_size;
+
+        max_compressed_size = libdeflate_gzip_compress_bound(compressor, uncompressed_size);
+        compressed_data = malloc(max_compressed_size);
+
+        if (compressed_data == NULL)
+        {
+            return std::string();
+        }
+
+        actual_compressed_size = libdeflate_gzip_compress(
+            compressor, uncompressed_data, uncompressed_size, compressed_data, max_compressed_size);
+
+        libdeflate_free_compressor(compressor);
+
+        if (actual_compressed_size == 0)
+        {
+            free(compressed_data);
+            return std::string();
+        }
+
+        std::string out;
+        out.assign(reinterpret_cast<char*>(compressed_data), actual_compressed_size);
+        free(compressed_data);
+
+        return out;
+#else
         z_stream zs; // z_stream is zlib's control structure
         memset(&zs, 0, sizeof(zs));
 
@@ -57,6 +99,7 @@ namespace ix
         deflateEnd(&zs);
 
         return outstring;
+#endif
     }
 
     bool gzipDecompress(const std::string& in, std::string& out)

ixwebsocket/IXWebSocketVersion.h

@@ -6,4 +6,4 @@
 
 #pragma once
 
-#define IX_WEBSOCKET_VERSION "10.4.8"
+#define IX_WEBSOCKET_VERSION "10.4.9"