zstd dict refactorings

load_test/main.rs

@@ -43,14 +43,23 @@ fn run_loop(pb: Arc<Mutex<Bar>>, args: Args) -> Result<(), Box<dyn std::error::E
     let mut rng = rand::thread_rng();
     let mut rand_data = vec![0u8; args.file_size];
     rng.fill(&mut rand_data[..]);
+    let hints = vec![
+        "foo", "bar", "baz", "qux", "quux", "corge", "grault", "garply", "waldo", "fred", "plugh",
+        "xyzzy", "thud",
+    ];
 
     loop {
         // tweak a byte in the data
         let idx = rng.gen_range(0..rand_data.len());
         rand_data[idx] = rng.gen();
+        let hint = hints[rng.gen_range(0..hints.len())];
 
         let form = reqwest::blocking::multipart::Form::new()
             .text("content_type", "text/plain")
+            .part(
+                "compression_hint",
+                reqwest::blocking::multipart::Part::text(hint),
+            )
             .part(
                 "data",
                 reqwest::blocking::multipart::Part::bytes(rand_data.clone()),