Fix encoding in request body

build.gradle

@@ -21,7 +21,7 @@ dependencies {
     testImplementation 'org.junit.jupiter:junit-jupiter-engine:5.5.2'
     testImplementation 'net.wuerl.kotlin:assertj-core-kotlin:0.2.1'
     testImplementation 'com.nhaarman.mockitokotlin2:mockito-kotlin:2.1.0'
-    testImplementation 'com.github.DaikonWeb:topinambur:1.2.3'
+    testImplementation 'com.github.DaikonWeb:topinambur:1.4.0'
 }
 
 test {

src/main/kotlin/daikon/HttpRequest.kt

@@ -4,11 +4,12 @@ import daikon.core.Method
 import daikon.core.PathParams
 import daikon.core.Request
 import java.net.URLDecoder.decode
+import java.nio.charset.StandardCharsets
 import java.nio.charset.StandardCharsets.UTF_8
 import javax.servlet.http.HttpServletRequest
 
 class HttpRequest(private val request: HttpServletRequest) : Request {
-    private val body by lazy { request.reader.readText() }
+    private val body by lazy { request.inputStream.readBytes() }
     private lateinit var pathParams: PathParams
 
     override fun withPathParams(value: String): HttpRequest {
@@ -31,7 +32,7 @@ class HttpRequest(private val request: HttpServletRequest) : Request {
 
     override fun url() = request.requestURL.toString() + if(request.queryString.isNullOrEmpty()) "" else "?${request.queryString}"
 
-    override fun body() = body
+    override fun body() = body.toString(UTF_8)
 
     override fun header(name: String): String = request.getHeader(name)
 

src/test/kotlin/daikon/CharacterEncodingTest.kt

@@ -45,6 +45,16 @@ class CharacterEncodingTest {
             }
     }
 
+    @Test
+    fun `post body supports utf8`() {
+        HttpServer()
+            .post("/") { req, res -> res.write(req.body()) }
+            .start().use {
+                val response = local("/").http.post(body = "è$&")
+                assertThat(response.body).isEqualTo("è$&")
+            }
+    }
+
     @Test
     fun `header does not supports utf8`() {
         HttpServer()