Add encoder param large_win.

src/tests/params.vtc

@@ -3,7 +3,7 @@
 varnishtest "test various custom parameter settings"
 
 server s1 {
-	loop 4 {
+	loop 5 {
 		rxreq
 		txresp -body {Man is distinguished, not only by his reason, but by this singular passion from other animals, which is a lust of the mind, that by a perseverance of delight in the continued and indefatigable generation of knowledge, exceeds the short vehemence of any carnal pleasure.}
 	}
@@ -98,6 +98,24 @@ varnish v1 -vcl+backend {
 
 client c1 -run
 
+# Encoder with large_win only works if the decoder is also set to
+# large_win=true.
+varnish v1 -vcl+backend {
+	import ${vmod_brotli};
+
+	sub vcl_init {
+		new br_large = brotli.encoder("br_largewin", large_win=true);
+		new unbr_large = brotli.decoder("unbr_largewin", large_win=true);
+	}
+
+	sub vcl_backend_response {
+		set beresp.filters = "br_largewin unbr_largewin";
+		set beresp.uncacheable = true;
+	}
+}
+
+client c1 -run
+
 logexpect l1 -v v1 -d 1 -g vxid -q "VfpAcct" {
 	expect 0 * Begin	bereq
 	expect * = VfpAcct	{^unbr \d+ 269$}
@@ -118,4 +136,9 @@ logexpect l1 -v v1 -d 1 -g vxid -q "VfpAcct" {
 	expect * = VfpAcct	{^unbr_largewin \d+ 269$}
 	expect * = VfpAcct	{^br \d+ \d+$}
 	expect * = End
+
+	expect 0 * Begin	bereq
+	expect * = VfpAcct	{^unbr_largewin \d+ 269$}
+	expect * = VfpAcct	{^br_largewin \d+ \d+$}
+	expect * = End
 } -run

src/vfp_brotli.c

@@ -149,6 +149,9 @@ setEncoderParams(struct vbr *vbr, const struct vbr_settings *settings)
 	CHECK_OBJ_NOTNULL(settings, VBR_SETTINGS_MAGIC);
 	assert(BrotliEncoderSetParameter(vbr->state.enc, BROTLI_PARAM_QUALITY,
 					 settings->quality) == BROTLI_TRUE);
+	assert(BrotliEncoderSetParameter(vbr->state.enc,
+					 BROTLI_PARAM_LARGE_WINDOW,
+					 settings->large_win) == BROTLI_TRUE);
 }
 
 static void
@@ -618,7 +621,8 @@ coder_init(VRT_CTX, const char *vcl_name, struct vmod_priv *priv,
 VCL_VOID
 vmod_encoder__init(VRT_CTX, struct vmod_brotli_encoder **encp,
 		   const char *vcl_name, struct vmod_priv *priv,
-		   VCL_STRING filter_name, VCL_BYTES bufsz, VCL_INT quality)
+		   VCL_STRING filter_name, VCL_BYTES bufsz, VCL_INT quality,
+		   VCL_BOOL large_win)
 {
 	struct vmod_brotli_encoder *enc;
 	struct vfp *vfp = NULL;
@@ -652,6 +656,7 @@ vmod_encoder__init(VRT_CTX, struct vmod_brotli_encoder **encp,
 	VRT_AddVFP(ctx, vfp);
 	settings->which = ENC;
 	settings->quality = quality;
+	settings->large_win = large_win;
 	enc->vfp = vfp;
 }
 

src/vfp_brotli.vcc

@@ -66,7 +66,8 @@ algorithm for responses fetched from backends.
 
 XXX ...
 
-$Object encoder(PRIV_VCL, STRING name, BYTES bufffer=32768, INT quality=11)
+$Object encoder(PRIV_VCL, STRING name, BYTES bufffer=32768, INT quality=11,
+                BOOL large_win=0)
 
 XXX ...