diff --git a/src/main/kotlin/me/shedaniel/linkie/namespaces/MCPNamespace.kt b/src/main/kotlin/me/shedaniel/linkie/namespaces/MCPNamespace.kt
index 7f2b0fe..bdd3313 100644
--- a/src/main/kotlin/me/shedaniel/linkie/namespaces/MCPNamespace.kt
+++ b/src/main/kotlin/me/shedaniel/linkie/namespaces/MCPNamespace.kt
@@ -1,6 +1,5 @@
 package me.shedaniel.linkie.namespaces
 
-import com.soywiz.korio.stream.readAvailable
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.builtins.MapSerializer
 import kotlinx.serialization.builtins.serializer
@@ -13,15 +12,7 @@ import me.shedaniel.linkie.Namespace
 import me.shedaniel.linkie.parser.apply
 import me.shedaniel.linkie.parser.srg
 import me.shedaniel.linkie.parser.tsrg
-import me.shedaniel.linkie.parser.visitor
-import me.shedaniel.linkie.utils.Version
-import me.shedaniel.linkie.utils.filterNotBlank
-import me.shedaniel.linkie.utils.lines
-import me.shedaniel.linkie.utils.readText
-import me.shedaniel.linkie.utils.toAsyncZip
-import me.shedaniel.linkie.utils.toVersion
-import me.shedaniel.linkie.utils.tryToVersion
-import java.net.URL
+import me.shedaniel.linkie.utils.*
 
 object MCPNamespace : Namespace("mcp") {
     const val tmpMcpVersionsUrl = "https://gist.githubusercontent.com/shedaniel/afc2748c6d5dd827d4cde161a49687ec/raw/mcp_versions.json"
diff --git a/src/main/kotlin/me/shedaniel/linkie/namespaces/MojangNamespace.kt b/src/main/kotlin/me/shedaniel/linkie/namespaces/MojangNamespace.kt
index 5d27d64..9a68ca8 100644
--- a/src/main/kotlin/me/shedaniel/linkie/namespaces/MojangNamespace.kt
+++ b/src/main/kotlin/me/shedaniel/linkie/namespaces/MojangNamespace.kt
@@ -7,13 +7,15 @@ import kotlinx.serialization.json.jsonArray
 import kotlinx.serialization.json.jsonObject
 import kotlinx.serialization.json.jsonPrimitive
 import me.shedaniel.linkie.*
-import me.shedaniel.linkie.utils.onlyClass
-import me.shedaniel.linkie.utils.readLines
-import me.shedaniel.linkie.utils.readText
-import me.shedaniel.linkie.utils.singleSequenceOf
-import me.shedaniel.linkie.utils.toVersion
-import me.shedaniel.linkie.utils.tryToVersion
-import java.net.URL
+import me.shedaniel.linkie.utils.*
+import kotlin.collections.List
+import kotlin.collections.Set
+import kotlin.collections.asSequence
+import kotlin.collections.forEach
+import kotlin.collections.listOf
+import kotlin.collections.mutableMapOf
+import kotlin.collections.set
+import kotlin.collections.setOf
 
 object MojangNamespace : Namespace("mojang") {
     val versionJsonMap = mutableMapOf<String, String>()
diff --git a/src/main/kotlin/me/shedaniel/linkie/namespaces/MojangSrgNamespace.kt b/src/main/kotlin/me/shedaniel/linkie/namespaces/MojangSrgNamespace.kt
index 4829db2..3796298 100644
--- a/src/main/kotlin/me/shedaniel/linkie/namespaces/MojangSrgNamespace.kt
+++ b/src/main/kotlin/me/shedaniel/linkie/namespaces/MojangSrgNamespace.kt
@@ -2,20 +2,14 @@ package me.shedaniel.linkie.namespaces
 
 import kotlinx.serialization.builtins.ListSerializer
 import kotlinx.serialization.builtins.serializer
-import me.shedaniel.linkie.MappingsContainer
-import me.shedaniel.linkie.MappingsMember
+import me.shedaniel.linkie.*
 import me.shedaniel.linkie.MappingsSource.MOJANG_TSRG
 import me.shedaniel.linkie.MappingsSource.MOJANG_TSRG2
-import me.shedaniel.linkie.Namespace
-import me.shedaniel.linkie.buildMappings
-import me.shedaniel.linkie.getMappedDesc
 import me.shedaniel.linkie.namespaces.MCPNamespace.loadTsrgFromURLZip
-import me.shedaniel.linkie.rearrangeClassMap
-import me.shedaniel.linkie.rewireIntermediaryFrom
+import me.shedaniel.linkie.utils.URL
 import me.shedaniel.linkie.utils.Version
 import me.shedaniel.linkie.utils.readText
 import me.shedaniel.linkie.utils.toVersion
-import java.net.URL
 
 object MojangSrgNamespace : Namespace("mojang_srg") {
     const val tmpTsrg2VersionsUrl = "https://gist.githubusercontent.com/shedaniel/68c5a5f8a56a30f48f994e105351b15f/raw/official-mcpconfig.json"
diff --git a/src/main/kotlin/me/shedaniel/linkie/namespaces/PlasmaNamespace.kt b/src/main/kotlin/me/shedaniel/linkie/namespaces/PlasmaNamespace.kt
index bc09917..5a61a4d 100644
--- a/src/main/kotlin/me/shedaniel/linkie/namespaces/PlasmaNamespace.kt
+++ b/src/main/kotlin/me/shedaniel/linkie/namespaces/PlasmaNamespace.kt
@@ -10,9 +10,9 @@ import me.shedaniel.linkie.Namespace
 import me.shedaniel.linkie.namespaces.YarnNamespace.loadIntermediaryFromTinyFile
 import me.shedaniel.linkie.namespaces.YarnNamespace.loadNamedFromTinyJar
 import me.shedaniel.linkie.simpleCachedSupplier
+import me.shedaniel.linkie.utils.URL
 import me.shedaniel.linkie.utils.readText
 import me.shedaniel.linkie.utils.singleSequenceOf
-import java.net.URL
 import kotlin.properties.Delegates
 
 object PlasmaNamespace : Namespace("plasma") {
diff --git a/src/main/kotlin/me/shedaniel/linkie/namespaces/QuiltMappingsNamespace.kt b/src/main/kotlin/me/shedaniel/linkie/namespaces/QuiltMappingsNamespace.kt
index b6973a2..c5074ea 100644
--- a/src/main/kotlin/me/shedaniel/linkie/namespaces/QuiltMappingsNamespace.kt
+++ b/src/main/kotlin/me/shedaniel/linkie/namespaces/QuiltMappingsNamespace.kt
@@ -6,7 +6,6 @@ import me.shedaniel.linkie.namespaces.YarnNamespace.loadIntermediaryFromTinyInpu
 import me.shedaniel.linkie.namespaces.YarnNamespace.loadNamedFromTinyInputStream
 import me.shedaniel.linkie.utils.*
 import org.dom4j.io.SAXReader
-import java.net.URL
 import kotlin.collections.component1
 import kotlin.collections.component2
 import kotlin.collections.set
diff --git a/src/main/kotlin/me/shedaniel/linkie/namespaces/YarnNamespace.kt b/src/main/kotlin/me/shedaniel/linkie/namespaces/YarnNamespace.kt
index 6c37e12..f29fea2 100644
--- a/src/main/kotlin/me/shedaniel/linkie/namespaces/YarnNamespace.kt
+++ b/src/main/kotlin/me/shedaniel/linkie/namespaces/YarnNamespace.kt
@@ -8,21 +8,11 @@ import me.shedaniel.linkie.MappingsSource
 import me.shedaniel.linkie.Method
 import me.shedaniel.linkie.MethodArg
 import me.shedaniel.linkie.Namespace
-import me.shedaniel.linkie.getClassByObfName
 import me.shedaniel.linkie.getClassByOptimumName
 import me.shedaniel.linkie.getMethodByOptimum
 import me.shedaniel.linkie.isSpecialGenerated
-import me.shedaniel.linkie.utils.Version
-import me.shedaniel.linkie.utils.ZipFile
-import me.shedaniel.linkie.utils.filterNotBlank
-import me.shedaniel.linkie.utils.lines
-import me.shedaniel.linkie.utils.readText
-import me.shedaniel.linkie.utils.toAsyncZip
-import me.shedaniel.linkie.utils.tryToVersion
-import me.shedaniel.linkie.utils.warn
-import net.fabricmc.mappings.ExtendedMappings
+import me.shedaniel.linkie.utils.*
 import java.io.InputStream
-import java.net.URL
 import kotlin.collections.component1
 import kotlin.collections.component2
 import kotlin.collections.set
diff --git a/src/main/kotlin/me/shedaniel/linkie/utils/IOUtils.kt b/src/main/kotlin/me/shedaniel/linkie/utils/IOUtils.kt
index 0b683db..0e01a91 100644
--- a/src/main/kotlin/me/shedaniel/linkie/utils/IOUtils.kt
+++ b/src/main/kotlin/me/shedaniel/linkie/utils/IOUtils.kt
@@ -7,20 +7,18 @@ import com.soywiz.korio.stream.AsyncStream
 import com.soywiz.korio.stream.openAsync
 import com.soywiz.korio.stream.readAvailable
 import okio.BufferedSource
-import java.net.URL
 import java.util.zip.ZipInputStream
-import kotlin.io.readText
 
 val httpClient = createHttpClient()
 val defaultRequestConfig = HttpClient.RequestConfig(
-    followRedirects = false,
     throwErrors = true
 )
 
 suspend fun AsyncInputStream.readText(): String = readBytes().decodeToString()
 suspend fun AsyncInputStream.lines(): Sequence<String> = readText().lineSequence()
 suspend fun AsyncInputStream.readBytes() = readAvailable()
-suspend fun URL.readText() = readText(Charsets.UTF_8)
+suspend fun URL.readBytes() = httpClient.readBytes(this.toString(), defaultRequestConfig)
+suspend fun URL.readText() = readBytes().decodeToString()
 suspend fun URL.readLines() = readText().lineSequence()
 suspend fun ByteArray.lines() = decodeToString().lineSequence()
 suspend fun URL.toAsyncZip(): ZipFile = toAsyncStream().zip()
@@ -32,6 +30,11 @@ fun BufferedSource.lines() = readUtf8().lines()
 
 fun getMillis(): Long = System.currentTimeMillis()
 
+@JvmInline
+value class URL(val path: String) {
+    override fun toString(): String = path
+}
+
 class ZipFile(val bytes: ByteArray) {
     suspend fun forEachEntry(action: suspend (path: String, entry: ZipEntry) -> Unit) {
         ZipInputStream(bytes.inputStream()).use { stream ->