Examples of uploading adn downloading files with os-lib support.

build.sbt

@@ -976,6 +976,7 @@ lazy val examples = (projectMatrix in file("examples"))
       "com.github.plokhotnyuk.jsoniter-scala" %%% "jsoniter-scala-macros" % jsoniterVersion,
       "io.github.resilience4j" % "resilience4j-circuitbreaker" % resilience4jVersion,
       "io.github.resilience4j" % "resilience4j-ratelimiter" % resilience4jVersion,
+      "com.lihaoyi" %% "os-lib" % "0.11.3",
       pekkoStreams,
       logback
     ),

examples/src/main/resources/some-text-file.txt

@@ -0,0 +1 @@
+JUST SIMPLE TEXT FILE WITH SOME TEXT CONTENT

examples/src/main/scala/sttp/client4/examples/DowloadFileWitOsLib.scala

@@ -0,0 +1,18 @@
+package sttp.client4.examples
+
+import sttp.client4.*
+import os.*
+
+private val fileSize = 8192
+private val dest: os.Path =
+  os.pwd / "examples" / "src" / "main" / "resources" / s"file-example-$fileSize-bytes"
+private val backend: SyncBackend = DefaultSyncBackend()
+
+@main def downloadFileWithOsLib(): Unit = {
+  os.remove(dest)
+  val request = basicRequest
+    .get(uri"https://httpbin.org/bytes/$fileSize")
+    .response(asInputStream(i => os.write(dest, i)))
+  val response = request.send(backend)
+  println(response.headers)
+}

examples/src/main/scala/sttp/client4/examples/UploadFileWithOsLib.scala

@@ -0,0 +1,17 @@
+package sttp.client4.examples
+
+import sttp.client4.*
+import os.*
+
+private val path: os.Path =
+  os.pwd / "examples" / "src" / "main" / "resources" / "some-text-file.txt"
+private val backend: SyncBackend = DefaultSyncBackend()
+
+@main def uploadFileWithOsLib(): Unit = {
+  val request = basicRequest
+    .post(uri"http://httpbin.org/post")
+    .body(os.read.inputStream(path))
+    .response(asString)
+  val response = request.send(backend)
+  println(response)
+}