Split the network stuff out of servo-gfx into servo-net

26 files changed, 149 insertions, 249 deletions

diff --git a/Makefile.in b/Makefile.in
index d0c31bfd78d..c1b1ac83e38 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -168,21 +168,28 @@ DONE_servo_util = $(B)src/servo-util/libservoutil.dummy
 
 DEPS_servo_util = $(CRATE_servo_util) $(SRC_servo_util) $(DONE_SUBMODULES)
 
-RFLAGS_servo_gfx = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/servo-util
+RFLAGS_servo_net = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/servo-util
+SRC_servo_net = $(call rwildcard,$(S)src/servo-net/,*.rs)
+CRATE_servo_net = $(S)src/servo-net/servo_net.rc
+DONE_servo_net = $(B)src/servo-net/libservonet.dummy
+
+DEPS_servo_net = $(CRATE_servo_net) $(SRC_servo_net) $(DONE_SUBMODULES) $(DONE_servo_util)
+
+RFLAGS_servo_gfx = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/servo-util -L $(B)src/servo-net
 SRC_servo_gfx = $(call rwildcard,$(S)src/servo-gfx/,*.rs)
 CRATE_servo_gfx = $(S)src/servo-gfx/servo_gfx.rc
 DONE_servo_gfx = $(B)src/servo-gfx/libservogfx.dummy
 
-DEPS_servo_gfx = $(CRATE_servo_gfx) $(SRC_servo_gfx) $(DONE_SUBMODULES) $(DONE_servo_util)
+DEPS_servo_gfx = $(CRATE_servo_gfx) $(SRC_servo_gfx) $(DONE_SUBMODULES) $(DONE_servo_util) $(DONE_servo_net)
 
-RFLAGS_servo = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/servo-gfx -L $(B)src/servo-util
+RFLAGS_servo = $(strip $(CFG_RUSTC_FLAGS)) $(addprefix -L $(B)src/,$(DEPS_SUBMODULES)) -L $(B)src/servo-gfx -L $(B)src/servo-util -L $(B)src/servo-net
 
 WEBIDL_servo = $(call rwildcard,$(S)src/servo/,*.webidl)
 AUTOGEN_SRC_servo = $(patsubst %.webidl, %Binding.rs, $(WEBIDL_servo))
 SRC_servo = $(call rwildcard,$(S)src/servo/,*.rs) $(AUTOGEN_SRC_servo)
 CRATE_servo = $(S)src/servo/servo.rc
 
-DEPS_servo = $(CRATE_servo) $(SRC_servo) $(DONE_SUBMODULES) $(DONE_servo_util) $(DONE_servo_gfx)
+DEPS_servo = $(CRATE_servo) $(SRC_servo) $(DONE_SUBMODULES) $(DONE_servo_util) $(DONE_servo_gfx) $(DONE_servo_net)
 
 # rules that depend on having correct meta-target vars (DEPS_CLEAN, DEPS_servo, etc)
 include $(S)mk/check.mk
@@ -197,6 +204,9 @@ all:    servo package
 $(DONE_servo_util):	$(DEPS_servo_util)
 	$(RUSTC) $(RFLAGS_servo_util) -o $@ $< && touch $@
 
+$(DONE_servo_net):	$(DEPS_servo_net)
+	$(RUSTC) $(RFLAGS_servo_net) -o $@ $< && touch $@
+
 $(DONE_servo_gfx):	$(DEPS_servo_gfx)
 	$(RUSTC) $(RFLAGS_servo_gfx) -o $@ $< && touch $@
 
diff --git a/configure b/configure
index 6dbd320d078..18918506d48 100755
--- a/configure
+++ b/configure
@@ -419,6 +419,7 @@ do
 done
 
 make_dir ${CFG_BUILD_DIR}src/servo-util
+make_dir ${CFG_BUILD_DIR}src/servo-net
 make_dir ${CFG_BUILD_DIR}src/servo-gfx
 make_dir src/test/ref
 make_dir src/rust
diff --git a/src/servo-gfx/display_list.rs b/src/servo-gfx/display_list.rs
index 87fdb66d8ff..e79dccea6c2 100644
--- a/src/servo-gfx/display_list.rs
+++ b/src/servo-gfx/display_list.rs
@@ -4,15 +4,15 @@
 
 use color::{Color, rgb};
 use geometry::Au;
-use image::base::Image;
 use render_context::RenderContext;
 use text::SendableTextRun;
-use servo_util::range::Range;
 
 use clone_arc = std::arc::clone;
 use geom::Rect;
 use geom::Point2D;
 use std::arc::ARC;
+use servo_net::image::base::Image;
+use servo_util::range::Range;
 
 struct DisplayItemData {
     bounds : Rect<Au>, // TODO: whose coordinate system should this use?
diff --git a/src/servo-gfx/image/encode/tga.rs b/src/servo-gfx/image/encode/tga.rs
deleted file mode 100644
index 8c5b948d505..00000000000
--- a/src/servo-gfx/image/encode/tga.rs
+++ /dev/null
@@ -1,28 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-use core::io::WriterUtil;
-use surface;
-
-fn encode(writer: @io::Writer, surface: &surface::ImageSurface) {
-    assert!(surface.format == surface::fo_rgba_8888);
-
-    writer.write_u8(0u8);                               // identsize
-    writer.write_u8(0u8);                               // colourmaptype
-    writer.write_u8(2u8);                               // imagetype
-
-    writer.write_le_u16(0u16);                          // colourmapstart
-    writer.write_le_u16(0u16);                          // colourmaplength
-    writer.write_u8(16u8);                              // colourmapbits
-
-    writer.write_le_u16(0u16);                          // xstart
-    writer.write_le_u16(0u16);                          // ystart
-    writer.write_le_u16(surface.size.width as u16);     // width
-    writer.write_le_u16(surface.size.height as u16);    // height
-    writer.write_u8(32u8);                              // bits
-    writer.write_u8(0x30u8);                            // descriptor
-
-    writer.write(surface.buffer);
-}
-
diff --git a/src/servo-gfx/opts.rs b/src/servo-gfx/opts.rs
index 8dd926857e3..d9c6ff1446c 100644
--- a/src/servo-gfx/opts.rs
+++ b/src/servo-gfx/opts.rs
@@ -10,17 +10,11 @@ use azure::azure_hl::{CoreGraphicsAcceleratedBackend, Direct2DBackend, SkiaBacke
 
 pub struct Opts {
     urls: ~[~str],
-    render_mode: RenderMode,
     render_backend: BackendType,
     n_render_threads: uint,
     tile_size: uint,
 }
 
-pub enum RenderMode {
-    Screen,
-    Png(~str)
-}
-
 #[allow(non_implicitly_copyable_typarams)]
 pub fn from_cmdline_args(args: &[~str]) -> Opts {
     use std::getopts;
@@ -45,11 +39,6 @@ pub fn from_cmdline_args(args: &[~str]) -> Opts {
         copy opt_match.free
     };
 
-    let render_mode = match getopts::opt_maybe_str(&opt_match, ~"o") {
-      Some(output_file) => Png(output_file),
-      None => Screen,
-    };
-
     let render_backend = match getopts::opt_maybe_str(&opt_match, ~"r") {
         Some(backend_str) => {
             if backend_str == ~"direct2d" {
@@ -81,7 +70,6 @@ pub fn from_cmdline_args(args: &[~str]) -> Opts {
 
     Opts {
         urls: urls,
-        render_mode: render_mode,
         render_backend: render_backend,
         n_render_threads: n_render_threads,
         tile_size: tile_size,
diff --git a/src/servo-gfx/render_context.rs b/src/servo-gfx/render_context.rs
index d7d815c2252..17fb40d825c 100644
--- a/src/servo-gfx/render_context.rs
+++ b/src/servo-gfx/render_context.rs
@@ -5,7 +5,6 @@
 use compositor::LayerBuffer;
 use font_context::FontContext;
 use geometry::Au;
-use image::base::Image;
 use opts::Opts;
 
 use azure::azure_hl::{B8G8R8A8, Color, ColorPattern, DrawOptions};
@@ -15,6 +14,7 @@ use core::libc::types::common::c99::uint16_t;
 use geom::point::Point2D;
 use geom::rect::Rect;
 use geom::size::Size2D;
+use servo_net::image::base::Image;
 use std::arc;
 use std::arc::ARC;
 
diff --git a/src/servo-gfx/render_task.rs b/src/servo-gfx/render_task.rs
index 4064972782f..970a39cff75 100644
--- a/src/servo-gfx/render_task.rs
+++ b/src/servo-gfx/render_task.rs
@@ -11,13 +11,13 @@ use geom::matrix2d::Matrix2D;
 use opts::Opts;
 use render_context::RenderContext;
 use render_layers::{RenderLayer, render_layers};
-use resource::util::spawn_listener;
-use servo_util::time::time;
 
 use core::cell::Cell;
 use core::comm::{Port, SharedChan};
 use core::task::SingleThreaded;
 use std::task_pool::TaskPool;
+use servo_net::util::spawn_listener;
+use servo_util::time::time;
 
 pub enum Msg {
     RenderMsg(RenderLayer),
diff --git a/src/servo-gfx/servo_gfx.rc b/src/servo-gfx/servo_gfx.rc
index d3aadde8c0f..f785e0fc877 100644
--- a/src/servo-gfx/servo_gfx.rc
+++ b/src/servo-gfx/servo_gfx.rc
@@ -13,6 +13,7 @@ extern mod geom;
 extern mod http_client;
 extern mod stb_image;
 extern mod std;
+extern mod servo_net;
 extern mod servo_util (name = "servo_util");
 
 // Eventually we would like the shaper to be pluggable, as many operating systems have their own
@@ -57,22 +58,7 @@ pub mod opts;
 #[path="platform/mod.rs"]
 pub mod platform;
 
-// Images
-pub mod image {
-    pub mod base;
-    pub mod holder;
-}
-
 // Text
 #[path = "text/mod.rs"]
 pub mod text;
 
-// FIXME: Blech. This does not belong in the GFX module.
-pub mod resource {
-    pub mod file_loader;
-    pub mod http_loader;
-    pub mod image_cache_task;
-    pub mod local_image_cache;
-    pub mod resource_task;
-    pub mod util;
-}
diff --git a/src/servo-gfx/resource/file_loader.rs b/src/servo-net/file_loader.rs
index fc7816d5f49..e7d03c091eb 100644
--- a/src/servo-gfx/resource/file_loader.rs
+++ b/src/servo-net/file_loader.rs
@@ -2,16 +2,17 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use core::task::spawn;
-use resource::resource_task::{Payload, Done, LoaderTask};
-use core::io::{file_reader, ReaderUtil};
+use resource_task::{Done, LoaderTask, Payload};
+
+use core::io::{ReaderUtil, file_reader};
+use core::task;
 
 static READ_SIZE: uint = 1024;
 
 pub fn factory() -> LoaderTask {
 	let f: LoaderTask = |url, progress_chan| {
-		assert!(url.scheme == ~"file");
-		do spawn {
+		assert!("file" == url.scheme);
+		do task::spawn {
 			// FIXME: Resolve bug prevents us from moving the path out of the URL.
 			match file_reader(&Path(url.path)) {
 				Ok(reader) => {
diff --git a/src/servo-gfx/resource/http_loader.rs b/src/servo-net/http_loader.rs
index eed67c19065..72e9e0acd30 100644
--- a/src/servo-gfx/resource/http_loader.rs
+++ b/src/servo-net/http_loader.rs
@@ -2,18 +2,19 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+use resource_task::{Payload, Done, LoaderTask};
+
 use core::comm::SharedChan;
-use core::task::spawn;
-use resource::resource_task::{Payload, Done, LoaderTask};
+use core::task;
+use http_client::uv_http_request;
 use http_client;
-use http_client::{uv_http_request};
 
 pub fn factory() -> LoaderTask {
 	let f: LoaderTask = |url, progress_chan| {
 		assert!(url.scheme == ~"http");
 
 		let progress_chan = SharedChan::new(progress_chan);
-		do spawn {
+		do task::spawn {
 			debug!("http_loader: requesting via http: %?", url.clone());
 			let mut request = uv_http_request(url.clone());
 			let errored = @mut false;
diff --git a/src/servo-gfx/image/base.rs b/src/servo-net/image/base.rs
index 7f62d6156de..ae9324c41f2 100644
--- a/src/servo-gfx/image/base.rs
+++ b/src/servo-net/image/base.rs
@@ -20,7 +20,6 @@ pub fn test_image_bin() -> ~[u8] {
 }
 
 pub fn load_from_memory(buffer: &[u8]) -> Option<Image> {
-
     // Can't remember why we do this. Maybe it's what cairo wants
     static FORCE_DEPTH: uint = 4;
 
diff --git a/src/servo-gfx/image/holder.rs b/src/servo-net/image/holder.rs
index bd6adce3d65..605eea39411 100644
--- a/src/servo-gfx/image/holder.rs
+++ b/src/servo-net/image/holder.rs
@@ -3,21 +3,20 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use image::base::Image;
-use resource::image_cache_task::{ImageReady, ImageNotReady, ImageFailed};
-use resource::local_image_cache::LocalImageCache;
+use image_cache_task::{ImageReady, ImageNotReady, ImageFailed};
+use local_image_cache::LocalImageCache;
 
 use core::util::replace;
 use geom::size::Size2D;
 use std::net::url::Url;
 use std::arc::{ARC, clone, get};
 
-// FIXME: Nasty coupling to resource here. This should probably be factored out into an interface
-// and use dependency injection.
+// FIXME: Nasty coupling here This will be a problem if we want to factor out image handling from
+// the network stack. This should probably be factored out into an interface and use dependency
+// injection.
 
-/** A struct to store image data. The image will be loaded once, the
-    first time it is requested, and an arc will be stored.  Clones of
-    this arc are given out on demand.
- */
+/// A struct to store image data. The image will be loaded once the first time it is requested,
+/// and an ARC will be stored.  Clones of this ARC are given out on demand.
 pub struct ImageHolder {
     url: Url,
     image: Option<ARC<~Image>>,
@@ -46,18 +45,16 @@ pub impl ImageHolder {
         holder
     }
 
-    /**
-    This version doesn't perform any computation, but may be stale w.r.t.
-    newly-available image data that determines size.
-
-    The intent is that the impure version is used during layout when
-    dimensions are used for computing layout.
-    */
+    /// This version doesn't perform any computation, but may be stale w.r.t. newly-available image
+    /// data that determines size.
+    ///
+    /// The intent is that the impure version is used during layout when dimensions are used for
+    /// computing layout.
     fn size(&self) -> Size2D<int> {
         self.cached_size
     }
     
-    /** Query and update current image size */
+    /// Query and update the current image size.
     fn get_size(&mut self) -> Option<Size2D<int>> {
         debug!("get_size() %?", self.url);
         match self.get_image() {
@@ -103,3 +100,4 @@ pub impl ImageHolder {
         return result;
     }
 }
+
diff --git a/src/servo-gfx/image/test.jpeg b/src/servo-net/image/test.jpeg
index 1a0bdb7acd1..1a0bdb7acd1 100644
--- a/src/servo-gfx/image/test.jpeg
+++ b/src/servo-net/image/test.jpeg
diff --git a/src/servo-gfx/resource/image_cache_task.rs b/src/servo-net/image_cache_task.rs
index 07abb1d05d4..4a462cdc926 100644
--- a/src/servo-gfx/resource/image_cache_task.rs
+++ b/src/servo-net/image_cache_task.rs
@@ -3,46 +3,46 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 use image::base::{Image, load_from_memory};
-use resource::resource_task;
-use resource::resource_task::ResourceTask;
+use resource_task;
+use resource_task::ResourceTask;
 use servo_util::url::{UrlMap, url_map};
 
 use clone_arc = std::arc::clone;
+use core::cell::Cell;
 use core::comm::{Chan, Port, SharedChan, stream};
 use core::task::spawn;
 use core::to_str::ToStr;
 use core::util::replace;
 use std::arc::ARC;
 use std::net::url::Url;
-use core::cell::Cell;
 
 pub enum Msg {
     /// Tell the cache that we may need a particular image soon. Must be posted
     /// before Decode
-    pub Prefetch(Url),
+    Prefetch(Url),
 
     // FIXME: We can probably get rid of this Cell now
     /// Used be the prefetch tasks to post back image binaries
     priv StorePrefetchedImageData(Url, Result<Cell<~[u8]>, ()>),
 
     /// Tell the cache to decode an image. Must be posted before GetImage/WaitForImage
-    pub Decode(Url),
+    Decode(Url),
 
     /// Used by the decoder tasks to post decoded images back to the cache
     priv StoreImage(Url, Option<ARC<~Image>>),
 
     /// Request an Image object for a URL. If the image is not is not immediately
     /// available then ImageNotReady is returned.
-    pub GetImage(Url, Chan<ImageResponseMsg>),
+    GetImage(Url, Chan<ImageResponseMsg>),
 
     /// Wait for an image to become available (or fail to load).
-    pub WaitForImage(Url, Chan<ImageResponseMsg>),
+    WaitForImage(Url, Chan<ImageResponseMsg>),
 
     /// For testing
     priv OnMsg(~fn(msg: &Msg)),
 
     /// Clients must wait for a response before shutting down the ResourceTask
-    pub Exit(Chan<()>)
+    Exit(Chan<()>),
 }
 
 pub enum ImageResponseMsg {
@@ -54,9 +54,9 @@ pub enum ImageResponseMsg {
 impl ImageResponseMsg {
     fn clone(&self) -> ImageResponseMsg {
         match *self {
-          ImageReady(ref img) => ImageReady(clone_arc(img)),
-          ImageNotReady => ImageNotReady,
-          ImageFailed => ImageFailed
+            ImageReady(ref img) => ImageReady(clone_arc(img)),
+            ImageNotReady => ImageNotReady,
+            ImageFailed => ImageFailed,
         }
     }
 }
@@ -65,17 +65,16 @@ impl Eq for ImageResponseMsg {
     fn eq(&self, other: &ImageResponseMsg) -> bool {
         // FIXME: Bad copies
         match (self.clone(), other.clone()) {
-          (ImageReady(*), ImageReady(*)) => fail!(~"unimplemented comparison"),
-          (ImageNotReady, ImageNotReady) => true,
-          (ImageFailed, ImageFailed) => true,
+            (ImageReady(*), ImageReady(*)) => fail!(~"unimplemented comparison"),
+            (ImageNotReady, ImageNotReady) => true,
+            (ImageFailed, ImageFailed) => true,
 
-          (ImageReady(*), _)
-          | (ImageNotReady, _)
-          | (ImageFailed, _) => false
+            (ImageReady(*), _) | (ImageNotReady, _) | (ImageFailed, _) => false
         }
     }
+
     fn ne(&self, other: &ImageResponseMsg) -> bool {
-        return !(*self).eq(other);
+        !(*self).eq(other)
     }
 }
 
@@ -87,9 +86,8 @@ pub fn ImageCacheTask(resource_task: ResourceTask) -> ImageCacheTask {
     ImageCacheTask_(resource_task, default_decoder_factory)
 }
 
-pub fn ImageCacheTask_(resource_task: ResourceTask,
-                       decoder_factory: DecoderFactory)
-                    -> ImageCacheTask {
+pub fn ImageCacheTask_(resource_task: ResourceTask, decoder_factory: DecoderFactory)
+                       -> ImageCacheTask {
     // FIXME: Doing some dancing to avoid copying decoder_factory, our test
     // version of which contains an uncopyable type which rust will currently
     // copy unsoundly
@@ -140,7 +138,7 @@ fn SyncImageCacheTask(resource_task: ResourceTask) -> ImageCacheTask {
         }
     }
 
-    return SharedChan::new(chan);
+    SharedChan::new(chan)
 }
 
 struct ImageCache {
@@ -175,9 +173,7 @@ enum AfterPrefetch {
 
 #[allow(non_implicitly_copyable_typarams)]
 impl ImageCache {
-
     pub fn run(&mut self) {
-
         let mut msg_handlers: ~[~fn(msg: &Msg)] = ~[];
 
         loop {
@@ -397,26 +393,12 @@ impl ImageCache {
 
     priv fn get_image(&self, url: Url, response: Chan<ImageResponseMsg>) {
         match self.get_state(copy url) {
-          Init => fail!(~"request for image before prefetch"),
-
-          Prefetching(DoDecode) => {
-            response.send(ImageNotReady);
-          }
-
-          Prefetching(DoNotDecode)
-          | Prefetched(*) => fail!(~"request for image before decode"),
-
-          Decoding => {
-            response.send(ImageNotReady)
-          }
-
-          Decoded(image) => {
-            response.send(ImageReady(clone_arc(image)));
-          }
-
-          Failed => {
-            response.send(ImageFailed);
-          }
+            Init => fail!(~"request for image before prefetch"),
+            Prefetching(DoDecode) => response.send(ImageNotReady),
+            Prefetching(DoNotDecode) | Prefetched(*) => fail!(~"request for image before decode"),
+            Decoding => response.send(ImageNotReady),
+            Decoded(image) => response.send(ImageReady(clone_arc(image))),
+            Failed => response.send(ImageFailed),
         }
     }
 
@@ -505,7 +487,6 @@ fn mock_resource_task(on_load: ~fn(resource: Chan<resource_task::ProgressMsg>))
 
 #[test]
 fn should_exit_on_request() {
-
     let mock_resource_task = mock_resource_task(|_response| () );
 
     let image_cache_task = ImageCacheTask(mock_resource_task);
@@ -518,7 +499,6 @@ fn should_exit_on_request() {
 #[test]
 #[should_fail]
 fn should_fail_if_unprefetched_image_is_requested() {
-
     let mock_resource_task = mock_resource_task(|_response| () );
 
     let image_cache_task = ImageCacheTask(mock_resource_task);
@@ -552,7 +532,6 @@ fn should_request_url_from_resource_task_on_prefetch() {
 #[test]
 #[should_fail]
 fn should_fail_if_requesting_decode_of_an_unprefetched_image() {
-
     let mock_resource_task = mock_resource_task(|_response| () );
 
     let image_cache_task = ImageCacheTask(mock_resource_task);
@@ -565,7 +544,6 @@ fn should_fail_if_requesting_decode_of_an_unprefetched_image() {
 #[test]
 #[should_fail]
 fn should_fail_if_requesting_image_before_requesting_decode() {
-
     let mock_resource_task = do mock_resource_task |response| {
         response.send(resource_task::Done(result::Ok(())));
     };
@@ -606,7 +584,6 @@ fn should_not_request_url_from_resource_task_on_multiple_prefetches() {
 
 #[test]
 fn should_return_image_not_ready_if_data_has_not_arrived() {
-
     let (wait_chan, wait_port) = pipes::stream();
 
     let mock_resource_task = do mock_resource_task |response| {
@@ -632,7 +609,6 @@ fn should_return_image_not_ready_if_data_has_not_arrived() {
 
 #[test]
 fn should_return_decoded_image_data_if_data_has_arrived() {
-
     let mock_resource_task = do mock_resource_task |response| {
         response.send(resource_task::Payload(test_image_bin()));
         response.send(resource_task::Done(result::Ok(())));
@@ -670,7 +646,6 @@ fn should_return_decoded_image_data_if_data_has_arrived() {
 
 #[test]
 fn should_return_decoded_image_data_for_multiple_requests() {
-
     let mock_resource_task = do mock_resource_task |response| {
         response.send(resource_task::Payload(test_image_bin()));
         response.send(resource_task::Done(result::Ok(())));
@@ -710,7 +685,6 @@ fn should_return_decoded_image_data_for_multiple_requests() {
 
 #[test]
 fn should_not_request_image_from_resource_task_if_image_is_already_available() {
-
     let image_bin_sent = comm::Port();
     let image_bin_sent_chan = image_bin_sent.chan();
 
@@ -755,7 +729,6 @@ fn should_not_request_image_from_resource_task_if_image_is_already_available() {
 
 #[test]
 fn should_not_request_image_from_resource_task_if_image_fetch_already_failed() {
-
     let image_bin_sent = comm::Port();
     let image_bin_sent_chan = image_bin_sent.chan();
 
@@ -802,7 +775,6 @@ fn should_not_request_image_from_resource_task_if_image_fetch_already_failed() {
 
 #[test]
 fn should_return_failed_if_image_bin_cannot_be_fetched() {
-
     let mock_resource_task = do mock_resource_task |response| {
         response.send(resource_task::Payload(test_image_bin()));
         // ERROR fetching image
@@ -841,7 +813,6 @@ fn should_return_failed_if_image_bin_cannot_be_fetched() {
 
 #[test]
 fn should_return_failed_for_multiple_get_image_requests_if_image_bin_cannot_be_fetched() {
-
     let mock_resource_task = do mock_resource_task |response | {
         response.send(resource_task::Payload(test_image_bin()));
         // ERROR fetching image
@@ -888,7 +859,6 @@ fn should_return_failed_for_multiple_get_image_requests_if_image_bin_cannot_be_f
 
 #[test]
 fn should_return_not_ready_if_image_is_still_decoding() {
-
     let (wait_to_decode_chan, wait_to_decode_port) = pipes::stream();
 
     let mock_resource_task = do mock_resource_task |response| {
@@ -943,7 +913,6 @@ fn should_return_not_ready_if_image_is_still_decoding() {
 
 #[test]
 fn should_return_failed_if_image_decode_fails() {
-
     let mock_resource_task = do mock_resource_task |response| {
         // Bogus data
         response.send(resource_task::Payload(~[]));
@@ -984,7 +953,6 @@ fn should_return_failed_if_image_decode_fails() {
 
 #[test]
 fn should_return_image_on_wait_if_image_is_already_loaded() {
-
     let mock_resource_task = do mock_resource_task |response| {
         response.send(resource_task::Payload(test_image_bin()));
         response.send(resource_task::Done(result::Ok(())));
@@ -1022,7 +990,6 @@ fn should_return_image_on_wait_if_image_is_already_loaded() {
 
 #[test]
 fn should_return_image_on_wait_if_image_is_not_yet_loaded() {
-
     let (wait_chan, wait_port) = pipes::stream();
 
     let mock_resource_task = do mock_resource_task |response| {
@@ -1053,7 +1020,6 @@ fn should_return_image_on_wait_if_image_is_not_yet_loaded() {
 
 #[test]
 fn should_return_image_failed_on_wait_if_image_fails_to_load() {
-
     let (wait_chan, wait_port) = pipes::stream();
 
     let mock_resource_task = do mock_resource_task |response| {
@@ -1105,3 +1071,4 @@ fn sync_cache_should_wait_for_images() {
     image_cache_task.exit();
     mock_resource_task.send(resource_task::Exit);
 }
+
diff --git a/src/servo-gfx/resource/local_image_cache.rs b/src/servo-net/local_image_cache.rs
index a051f8e19de..8df7f082bb7 100644
--- a/src/servo-gfx/resource/local_image_cache.rs
+++ b/src/servo-net/local_image_cache.rs
@@ -8,12 +8,13 @@ extra message traffic, it also avoids waiting on the same image
 multiple times and thus triggering reflows multiple times.
 */
 
+use image_cache_task::{Decode, GetImage, ImageCacheTask, ImageFailed, ImageNotReady, ImageReady};
+use image_cache_task::{ImageResponseMsg, Prefetch, WaitForImage};
+
 use clone_arc = std::arc::clone;
-use std::net::url::Url;
 use core::comm::Port;
-use resource::image_cache_task::{ImageCacheTask, ImageResponseMsg, Prefetch, Decode, GetImage};
-use resource::image_cache_task::{ WaitForImage, ImageReady, ImageNotReady, ImageFailed};
 use servo_util::url::{UrlMap, url_map};
+use std::net::url::Url;
 
 pub fn LocalImageCache(image_cache_task: ImageCacheTask) -> LocalImageCache {
     LocalImageCache {
diff --git a/src/servo-gfx/resource/resource_task.rs b/src/servo-net/resource_task.rs
index 3b989f478e9..8fef9095387 100644
--- a/src/servo-gfx/resource/resource_task.rs
+++ b/src/servo-net/resource_task.rs
@@ -2,17 +2,15 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-/*!
+//! A task that takes a URL and streams back the binary data.
 
-A task that takes a URL and streams back the binary data
-
-*/
+use file_loader;
+use http_loader;
 
 use core::cell::Cell;
 use core::comm::{Chan, Port, SharedChan};
-use resource::util::spawn_listener;
 use std::net::url::{Url, to_str};
-use super::{file_loader, http_loader};
+use util::spawn_listener;
 
 pub enum ControlMsg {
     /// Request the data associated with a particular URL
diff --git a/src/servo-net/servo_net.rc b/src/servo-net/servo_net.rc
new file mode 100644
index 00000000000..739ec49c637
--- /dev/null
+++ b/src/servo-net/servo_net.rc
@@ -0,0 +1,33 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#[link(name = "servo_net",
+       vers = "0.1",
+       uuid = "69c2b7b7-0d7d-4514-a48a-0eed61476039",
+       url = "http://servo.org/")];
+#[crate_type = "lib"];
+
+extern mod geom;
+extern mod http_client;
+extern mod servo_util;
+extern mod stb_image;
+extern mod std;
+
+/// Image handling.
+///
+/// It may be surprising that this goes in the network crate as opposed to the graphics crate.
+/// However, image handling is generally very integrated with the network stack (especially where
+/// caching is involved) and as a result it must live in here.
+pub mod image {
+    pub mod base;
+    pub mod holder;
+}
+
+pub mod file_loader;
+pub mod http_loader;
+pub mod image_cache_task;
+pub mod local_image_cache;
+pub mod resource_task;
+pub mod util;
+
diff --git a/src/servo-gfx/resource/util.rs b/src/servo-net/util.rs
index ec1aea92e86..ec1aea92e86 100644
--- a/src/servo-gfx/resource/util.rs
+++ b/src/servo-net/util.rs
diff --git a/src/servo/content/content_task.rs b/src/servo/content/content_task.rs
index af9cd1aa2e1..56d0959923a 100644
--- a/src/servo/content/content_task.rs
+++ b/src/servo/content/content_task.rs
@@ -17,15 +17,13 @@ use layout::layout_task;
 use core::cell::Cell;
 use core::comm::{Port, SharedChan};
 use core::either;
-use core::io::{println, read_whole_file};
+use core::io::read_whole_file;
 use core::pipes::select2i;
 use core::ptr::null;
 use core::task::{SingleThreaded, task};
 use core::util::replace;
 use dom;
 use geom::size::Size2D;
-use gfx::resource::image_cache_task::ImageCacheTask;
-use gfx::resource::resource_task::ResourceTask;
 use html;
 use js::JSVAL_NULL;
 use js::global::{global_class, debug_fns};
@@ -34,6 +32,8 @@ use js::jsapi::JSContext;
 use js::jsapi::bindgen::{JS_CallFunctionValue, JS_GetContextPrivate};
 use js::rust::{Compartment, Cx};
 use jsrt = js::rust::rt;
+use servo_net::image_cache_task::ImageCacheTask;
+use servo_net::resource_task::ResourceTask;
 use servo_util::tree::TreeNodeRef;
 use std::net::url::Url;
 use url_to_str = std::net::url::to_str;
diff --git a/src/servo/engine.rs b/src/servo/engine.rs
index d194535e8ed..ebf524c02cf 100644
--- a/src/servo/engine.rs
+++ b/src/servo/engine.rs
@@ -8,9 +8,6 @@ use content::content_task;
 use dom::event::Event;
 use layout::layout_task;
 use layout::layout_task::LayoutTask;
-use resource::image_cache_task::{ImageCacheTask, ImageCacheTaskClient};
-use resource::resource_task::ResourceTask;
-use resource::resource_task;
 use util::task::spawn_listener;
 
 use core::cell::Cell;
@@ -18,6 +15,9 @@ use core::comm::{Chan, Port, SharedChan};
 use gfx::opts::Opts;
 use gfx::render_task::RenderTask;
 use gfx::render_task;
+use servo_net::image_cache_task::{ImageCacheTask, ImageCacheTaskClient};
+use servo_net::resource_task::ResourceTask;
+use servo_net::resource_task;
 use std::net::url::Url;
 
 pub type EngineTask = Chan<Msg>;
diff --git a/src/servo/html/cssparse.rs b/src/servo/html/cssparse.rs
index 8149fc671d3..9ee789d6e3e 100644
--- a/src/servo/html/cssparse.rs
+++ b/src/servo/html/cssparse.rs
@@ -2,17 +2,14 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-/*!
-Some little helpers for hooking up the HTML parser with the CSS parser
-*/
-
-use resource::resource_task::{ResourceTask, ProgressMsg, Load, Payload, Done};
+/// Some little helpers for hooking up the HTML parser with the CSS parser.
 
 use core::cell::Cell;
 use core::comm::Port;
 use core::str;
 use newcss::stylesheet::Stylesheet;
 use newcss::util::DataStream;
+use servo_net::resource_task::{ResourceTask, ProgressMsg, Load, Payload, Done};
 use std::net::url::Url;
 
 /// Where a style sheet comes from.
diff --git a/src/servo/html/hubbub_html_parser.rs b/src/servo/html/hubbub_html_parser.rs
index fef7c6584a6..549f6ec5b0a 100644
--- a/src/servo/html/hubbub_html_parser.rs
+++ b/src/servo/html/hubbub_html_parser.rs
@@ -6,15 +6,15 @@ use dom::element::*;
 use dom::node::{AbstractNode, Comment, Doctype, Element, ElementNodeTypeId, Node, Text};
 use html::cssparse::{InlineProvenance, StylesheetProvenance, UrlProvenance, spawn_css_parser};
 use newcss::stylesheet::Stylesheet;
-use resource::image_cache_task::ImageCacheTask;
-use resource::image_cache_task;
-use resource::resource_task::{Done, Load, Payload, ResourceTask};
 use util::task::spawn_conversation;
 
 use core::cell::Cell;
 use core::comm::{Chan, Port, SharedChan};
 use core::str::eq_slice;
 use hubbub::hubbub;
+use servo_net::image_cache_task::ImageCacheTask;
+use servo_net::image_cache_task;
+use servo_net::resource_task::{Done, Load, Payload, ResourceTask};
 use servo_util::tree::TreeUtils;
 use servo_util::url::make_url;
 use std::net::url::Url;
diff --git a/src/servo/layout/box.rs b/src/servo/layout/box.rs
index 288e4a6151a..67d96dcef67 100644
--- a/src/servo/layout/box.rs
+++ b/src/servo/layout/box.rs
@@ -19,8 +19,6 @@ use geom::{Point2D, Rect, Size2D};
 use gfx::display_list::{DisplayItem, DisplayList};
 use gfx::font::{FontStyle, FontWeight300};
 use gfx::geometry::Au;
-use gfx::image::holder::ImageHolder;
-use gfx::resource::local_image_cache::LocalImageCache;
 use newcss::color::rgb;
 use newcss::complete::CompleteStyle;
 use newcss::units::{Cursive, Em, Fantasy, Length, Monospace, Pt, Px, SansSerif, Serif};
@@ -28,6 +26,8 @@ use newcss::values::{CSSBorderWidthLength, CSSBorderWidthMedium};
 use newcss::values::{CSSFontFamilyFamilyName, CSSFontFamilyGenericFamily};
 use newcss::values::{CSSFontSizeLength, CSSFontStyleItalic, CSSFontStyleNormal};
 use newcss::values::{CSSFontStyleOblique, CSSTextAlign};
+use servo_net::image::holder::ImageHolder;
+use servo_net::local_image_cache::LocalImageCache;
 use servo_util::range::*;
 use std::arc;
 use std::cmp::FuzzyEq;
diff --git a/src/servo/layout/context.rs b/src/servo/layout/context.rs
index dabcdefbf40..8646b9faabc 100644
--- a/src/servo/layout/context.rs
+++ b/src/servo/layout/context.rs
@@ -2,14 +2,15 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+//! Data needed by the layout task.
+
 use geom::rect::Rect;
 use gfx::font_context::FontContext;
 use gfx::geometry::Au;
-use gfx::resource::local_image_cache::LocalImageCache;
+use servo_net::local_image_cache::LocalImageCache;
 use std::net::url::Url;
 
-/* Represents layout task context. */
-
+/// Data needed by the layout task.
 pub struct LayoutContext {
     font_ctx: @mut FontContext,
     image_cache: @mut LocalImageCache,
diff --git a/src/servo/layout/layout_task.rs b/src/servo/layout/layout_task.rs
index d03ac503e67..13fd258e40b 100644
--- a/src/servo/layout/layout_task.rs
+++ b/src/servo/layout/layout_task.rs
@@ -15,8 +15,6 @@ use layout::context::LayoutContext;
 use layout::debug::{BoxedMutDebugMethods, DebugMethods};
 use layout::display_list_builder::{DisplayListBuilder, FlowDisplayListBuilderMethods};
 use layout::flow::FlowContext;
-use resource::image_cache_task::{ImageCacheTask, ImageResponseMsg};
-use resource::local_image_cache::LocalImageCache;
 use util::task::spawn_listener;
 use util::time::time;
 
@@ -34,6 +32,8 @@ use gfx::render_task::{RenderMsg, RenderTask};
 use newcss::select::SelectCtx;
 use newcss::stylesheet::Stylesheet;
 use newcss::types::OriginAuthor;
+use servo_net::image_cache_task::{ImageCacheTask, ImageResponseMsg};
+use servo_net::local_image_cache::LocalImageCache;
 use servo_util::tree::TreeUtils;
 use std::net::url::Url;
 
diff --git a/src/servo/servo.rc b/src/servo/servo.rc
index e396341138c..a34e9f7e9d7 100755
--- a/src/servo/servo.rc
+++ b/src/servo/servo.rc
@@ -11,19 +11,18 @@
 #[license = "MPL"];
 #[crate_type = "lib"];
 
-#[legacy_records];
-
 extern mod azure;
 extern mod geom;
 extern mod gfx (name = "servo_gfx");
-extern mod servo_util (name = "servo_util");
 extern mod glut;
 extern mod http_client;
 extern mod hubbub;
 extern mod js;
 extern mod layers;
-extern mod opengles;
 extern mod newcss (name = "css");
+extern mod opengles;
+extern mod servo_net;
+extern mod servo_util (name = "servo_util");
 extern mod sharegl;
 extern mod stb_image;
 extern mod std;
@@ -36,10 +35,12 @@ extern mod core_text;
 use compositing::{AddKeyHandler, CompositorImpl};
 use engine::{Engine, LoadUrlMsg};
 
-pub use gfx::opts::{Opts, Png, Screen};  // FIXME: Do we really want "Screen" and "Png" visible?
-pub use gfx::resource;
-pub use gfx::resource::image_cache_task::ImageCacheTask;
-pub use gfx::resource::resource_task::ResourceTask;
+use core::comm::SharedChan;
+use gfx::opts;
+use servo_net::image_cache_task::ImageCacheTask;
+use servo_net::resource_task::ResourceTask;
+
+pub use gfx::opts::Opts;
 pub use gfx::text;
 pub use servo_util::url::make_url;
 
@@ -122,27 +123,12 @@ pub mod platform;
 pub mod util;
 
 fn main() {
-    let args = os::args();
-    run(&gfx::opts::from_cmdline_args(args))
+    run(&opts::from_cmdline_args(os::args()))
 }
 
-#[allow(non_implicitly_copyable_typarams)]
 fn run(opts: &Opts) {
-    match &opts.render_mode {
-      &Screen => run_pipeline_screen(opts),
-      &Png(ref outfile) => {
-        assert!(!opts.urls.is_empty());
-        if opts.urls.len() > 1u {
-            fail!(~"servo asks that you stick to a single URL in PNG output mode")
-        }
-        run_pipeline_png(opts, *outfile)
-      }
-    }
-}
-
-fn run_pipeline_screen(opts: &Opts) {
     let (dom_event_port, dom_event_chan) = comm::stream();
-    let dom_event_chan = comm::SharedChan::new(dom_event_chan);
+    let dom_event_chan = SharedChan::new(dom_event_chan);
 
     // The platform event handler thread
     let compositor = CompositorImpl::new(dom_event_chan.clone(), copy *opts);
@@ -163,14 +149,15 @@ fn run_pipeline_screen(opts: &Opts) {
 
     for opts.urls.each |filename| {
         let url = make_url(copy *filename, None);
+
         debug!("master: Sending url `%s`", url.to_str());
         engine_task.send(LoadUrlMsg(url));
-        debug!("master: Waiting for keypress");
 
+        debug!("master: Waiting for keypress");
         match keypress_from_compositor.try_recv() {
-          Some(*) => { }
-          None => { error!("keypress stream closed unexpectedly") }
-        };
+            Some(*) => {}
+            None => error!("keypress stream closed unexpectedly"),
+        }
     }
 
     // Shut everything down
@@ -182,43 +169,3 @@ fn run_pipeline_screen(opts: &Opts) {
     compositor.chan.send(compositing::Exit);
 }
 
-fn run_pipeline_png(_opts: &Opts, _outfile: &str) {
-    fail!(~"PNG compositor is broken");
-}
-
-#[cfg(broken)]
-fn run_pipeline_png(url: ~str, outfile: &str) {
-    // Use a PNG encoder as the graphics compositor
-    use gfx::png_compositor;
-    use png_compositor::PngCompositor;
-    use io::{Writer, buffered_file_writer};
-    use resource::resource_task::ResourceTask;
-    use resource::image_cache_task::SyncImageCacheTask;
-
-    listen(|pngdata_from_compositor| {
-        let (dom_event_port, dom_event_chan) = comm::stream();
-        let dom_event_chan = comm::SharedChan(dom_event_chan);
-
-        let compositor = PngCompositor(pngdata_from_compositor);
-        let resource_task = ResourceTask();
-        // For the PNG pipeline we are using a synchronous image task so that all images will be
-        // fulfilled before the first paint.
-        let image_cache_task = SyncImageCacheTask(resource_task);
-        let engine_task = Engine(copy compositor,
-                                 dom_event_port,
-                                 dom_event_chan,
-                                 resource_task,
-                                 image_cache_task);
-        engine_task.send(LoadUrlMsg(make_url(copy url, None)));
-
-        match buffered_file_writer(&Path(outfile)) {
-          Ok(writer) => writer.write(pngdata_from_compositor.recv()),
-          Err(e) => fail!(e)
-        }
-
-        let (exit_chan, exit_response_from_engine) = comm::stream();
-        engine_task.send(engine::ExitMsg(exit_chan));
-        exit_response_from_engine.recv();
-        compositor.send(png_compositor::Exit);
-    })
-}