Split Socket implementation, improve performance

libmc-protocol-context/README.md

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+# libmc-protocol-encrypt
+
+This module implemented `ProtocolContext` and provided a `DefaultProtocolContext`.
+
+## Get started
+
+> `Sha1`, `RSA1024`, `AES-128-CFB8` from `cryptography-kotlin`(and its based provider).
+> `HTTP Client` from `ktor-client`
+
+> Before start, you need to add a `ktor client engine` for your platform. For JVM, `ktor-client-okhttp`(JVM 1.8+)
+> or `ktor-client-java`(JVM 11+), for Linux, use `ktor-client-curl`, for Windows, use `ktor-client-winhttp`,
+> for Apple, use `ktor-client-darwin`
+
+```kotlin
+fun main() {
+    val cli = createMinecraftClient(
+        // ... other paramater
+        crypto = DefaultProtocolContext
+    )
+}
+```