[WIP] HTTP Compression Supportcompr

1 files changed, 86 insertions, 0 deletions

diff --git a/src/nxt_brotli.c b/src/nxt_brotli.c
new file mode 100644
index 00000000..0c9b3658
--- /dev/null
+++ b/src/nxt_brotli.c
@@ -0,0 +1,86 @@
+/*
+ *
+ */
+
+/* XXX Remove */
+#define _GNU_SOURCE
+#include <unistd.h>
+
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <brotli/encode.h>
+
+#include <nxt_http_compression.h>
+
+static void nxt_brotli_free(const nxt_http_comp_compressor_ctx_t *ctx)
+{
+    BrotliEncoderState *brotli = ctx->brotli_ctx;
+
+    BrotliEncoderDestroyInstance(brotli);
+}
+
+static void nxt_brotli_init(nxt_http_comp_compressor_ctx_t *ctx)
+{
+    BrotliEncoderState **brotli = &ctx->brotli_ctx;
+
+    *brotli = BrotliEncoderCreateInstance(NULL, NULL, NULL);
+    BrotliEncoderSetParameter(*brotli, BROTLI_PARAM_QUALITY, ctx->level);
+
+    printf("%7d %s: brotli compression level [%d]\n", gettid(), __func__,
+           ctx->level);
+}
+
+static size_t nxt_brotli_compressed_size(const nxt_http_comp_compressor_ctx_t *ctx,
+                                         size_t in_len)
+{
+    return BrotliEncoderMaxCompressedSize(in_len);
+}
+
+static ssize_t nxt_brotli_compress(nxt_http_comp_compressor_ctx_t *ctx,
+                                   const uint8_t *in_buf, size_t in_len,
+                                   uint8_t *out_buf, size_t out_len, bool last)
+{
+    bool ok;
+    size_t out_bytes;
+    uint8_t *outp;
+    BrotliEncoderState *brotli = ctx->brotli_ctx;
+
+    printf("%7d %s: last/%s\n", gettid(), __func__, last ? "true" : "false");
+    printf("%7d %s: in_len [%lu] out_len [%lu]\n", gettid(),  __func__,
+           in_len, out_len);
+
+    outp = out_buf;
+
+    ok = BrotliEncoderCompressStream(brotli, BROTLI_OPERATION_PROCESS,
+                                     &in_len, &in_buf, &out_bytes, &outp,
+                                     NULL);
+
+    ok = BrotliEncoderCompressStream(brotli, BROTLI_OPERATION_FLUSH,
+                                     &in_len, &in_buf, &out_bytes, &outp,
+                                     NULL);
+
+    printf("%7d %s: in_len [%lu] out_len [%lu] out_bytes [%lu]\n", gettid(),
+           __func__, in_len, out_len, out_bytes);
+    if (last) {
+        ok = BrotliEncoderCompressStream(brotli, BROTLI_OPERATION_FINISH,
+                                         &in_len, &in_buf, &out_bytes, &outp,
+                                         NULL);
+        nxt_brotli_free(ctx);
+    }
+
+    printf("%7d %s: in_len [%lu] out_len [%lu] out_bytes [%lu]\n", gettid(),
+           __func__, in_len, out_len, out_bytes);
+    printf("%7d %s: buf [%p] outp [%p]\n", gettid(), __func__, out_buf, outp);
+
+    return out_len - out_bytes;
+}
+
+const nxt_http_comp_operations_t  nxt_comp_brotli_ops = {
+    .init               = nxt_brotli_init,
+    .compressed_size    = nxt_brotli_compressed_size,
+    .deflate            = nxt_brotli_compress,
+    .free_ctx           = nxt_brotli_free,
+};