diff --git a/Cargo.lock b/Cargo.lock
index c74dce7a..7efd5e03 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,5 +1,13 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+[[package]]
+name = "addr2line"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "gimli 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "adler32"
 version = "1.0.4"
@@ -81,12 +89,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "async-trait"
-version = "0.1.30"
+version = "0.1.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -95,7 +103,7 @@ version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hermit-abi 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -106,24 +114,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "backtrace"
-version = "0.3.46"
+version = "0.3.48"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "backtrace-sys 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "addr2line 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
+ "object 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "backtrace-sys"
-version = "0.1.37"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cc 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "base64"
 version = "0.11.0"
@@ -183,7 +183,7 @@ dependencies = [
 
 [[package]]
 name = "bumpalo"
-version = "3.2.1"
+version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -233,7 +233,7 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "2.33.0"
+version = "2.33.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -262,7 +262,7 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -329,8 +329,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -355,7 +355,7 @@ version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -442,8 +442,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro-hack 0.5.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -456,7 +456,7 @@ name = "futures-task"
 version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "once_cell 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -471,7 +471,7 @@ dependencies = [
  "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-task 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-hack 0.5.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro-nested 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -492,10 +492,15 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "gimli"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "h2"
 version = "0.2.5"
@@ -510,7 +515,7 @@ dependencies = [
  "indexmap 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-util 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -527,7 +532,7 @@ name = "hermit-abi"
 version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -553,7 +558,7 @@ name = "hostname"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "match_cfg 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -598,9 +603,9 @@ dependencies = [
  "itoa 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.34 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "want 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -628,7 +633,7 @@ name = "iovec"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -694,7 +699,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.69"
+version = "0.2.70"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -714,7 +719,7 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "libflate 0.1.27 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "tar 0.4.26 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -792,7 +797,7 @@ dependencies = [
  "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "miow 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "net2 0.2.34 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -817,7 +822,7 @@ version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.22 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -861,7 +866,7 @@ version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl 0.10.29 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -878,7 +883,7 @@ version = "0.2.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -890,7 +895,7 @@ dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -917,12 +922,17 @@ version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "hermit-abi 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "object"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "once_cell"
-version = "1.3.1"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -939,7 +949,7 @@ dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.56 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -963,7 +973,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-src 111.9.0+1.1.1g (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -999,8 +1009,8 @@ dependencies = [
  "pest 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "pest_meta 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1015,20 +1025,20 @@ dependencies = [
 
 [[package]]
 name = "pin-project"
-version = "0.4.14"
+version = "0.4.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "pin-project-internal 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project-internal 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "0.4.14"
+version = "0.4.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1094,7 +1104,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "quote"
-version = "1.0.4"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1106,7 +1116,7 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1181,8 +1191,8 @@ version = "0.16.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.52 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
- "once_cell 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
+ "once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "untrusted 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "web-sys 0.3.39 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1253,7 +1263,7 @@ dependencies = [
  "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "security-framework-sys 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1263,7 +1273,7 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1280,8 +1290,8 @@ version = "1.0.110"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1320,7 +1330,7 @@ dependencies = [
 name = "shadowsocks-rust"
 version = "1.8.11"
 dependencies = [
- "async-trait 0.1.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "async-trait 0.1.31 (registry+https://github.com/rust-lang/crates.io-index)",
  "base64 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "bloomfilter 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "byte_string 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1328,7 +1338,7 @@ dependencies = [
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "digest 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1340,7 +1350,7 @@ dependencies = [
  "iprange 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "json5 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "libsodium-sys 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "lru_time_cache 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1351,7 +1361,7 @@ dependencies = [
  "native-tls 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl 0.10.29 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "qrcode 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1365,7 +1375,7 @@ dependencies = [
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "strum 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "strum_macros 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-native-tls 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-rustls 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1383,7 +1393,7 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "arc-swap 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1407,7 +1417,7 @@ version = "0.3.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1442,8 +1452,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1453,11 +1463,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "syn"
-version = "1.0.19"
+version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1472,7 +1482,7 @@ version = "0.4.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "filetime 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "xattr 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1483,7 +1493,7 @@ version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1495,7 +1505,7 @@ name = "term_size"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1518,20 +1528,20 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.16"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "thiserror-impl 1.0.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thiserror-impl 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.16"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1547,13 +1557,13 @@ name = "time"
 version = "0.1.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "tokio"
-version = "0.2.20"
+version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1561,7 +1571,7 @@ dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio 0.6.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "mio-named-pipes 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1580,8 +1590,8 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1590,7 +1600,7 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "native-tls 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1600,7 +1610,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustls 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "webpki 0.21.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1614,7 +1624,7 @@ dependencies = [
  "futures-sink 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "pin-project-lite 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1640,8 +1650,8 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-layer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tracing 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1653,7 +1663,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1668,8 +1678,8 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-layer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-load 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1682,8 +1692,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-discover 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1694,7 +1704,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-layer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1705,8 +1715,8 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-layer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1721,8 +1731,8 @@ name = "tower-timeout"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-layer 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1734,7 +1744,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "futures-core 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "tower-service 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1754,8 +1764,8 @@ name = "tracing-attributes"
 version = "0.1.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1771,7 +1781,7 @@ name = "trust-dns-https"
 version = "0.19.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "backtrace 0.3.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace 0.3.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytes 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "data-encoding 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1779,8 +1789,8 @@ dependencies = [
  "http 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustls 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "thiserror 1.0.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thiserror 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-rustls 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "trust-dns-proto 0.19.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "trust-dns-rustls 0.19.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1794,8 +1804,8 @@ name = "trust-dns-proto"
 version = "0.19.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "async-trait 0.1.30 (registry+https://github.com/rust-lang/crates.io-index)",
- "backtrace 0.3.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "async-trait 0.1.31 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace 0.3.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "enum-as-inner 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "idna 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1803,8 +1813,8 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "thiserror 1.0.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thiserror 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1813,7 +1823,7 @@ name = "trust-dns-resolver"
 version = "0.19.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "backtrace 0.3.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace 0.3.48 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "ipconfig 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1823,8 +1833,8 @@ dependencies = [
  "resolv-conf 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustls 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "thiserror 1.0.16 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thiserror 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-rustls 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "trust-dns-https 0.19.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "trust-dns-proto 0.19.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1840,7 +1850,7 @@ dependencies = [
  "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustls 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio-rustls 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "trust-dns-proto 0.19.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "webpki 0.21.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1962,12 +1972,12 @@ name = "wasm-bindgen-backend"
 version = "0.2.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bumpalo 3.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bumpalo 3.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-shared 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1976,7 +1986,7 @@ name = "wasm-bindgen-macro"
 version = "0.2.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-macro-support 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1986,8 +1996,8 @@ version = "0.2.62"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-backend 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "wasm-bindgen-shared 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2087,7 +2097,7 @@ name = "xattr"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2096,6 +2106,7 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [metadata]
+"checksum addr2line 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "456d75cbb82da1ad150c8a9d97285ffcd21c9931dcb11e995903e7d75141b38b"
 "checksum adler32 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5d2e7343e7fc9de883d1b0341e0b13970f764c14101234857d2ddafa1cb1cac2"
 "checksum aead 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4cf01b9b56e767bb57b94ebf91a58b338002963785cdd7013e21c0d4679471e4"
 "checksum aes 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "54eb1d8fe354e5fc611daf4f2ea97dd45a765f4f1e4512306ec183ae2e8f20c9"
@@ -2105,11 +2116,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum aho-corasick 0.7.10 (registry+https://github.com/rust-lang/crates.io-index)" = "8716408b8bc624ed7f65d223ddb9ac2d044c0547b6fa4b0d554f3a9540496ada"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
 "checksum arc-swap 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "b585a98a234c46fc563103e9278c9391fde1f4e6850334da895d27edb9580f62"
-"checksum async-trait 0.1.30 (registry+https://github.com/rust-lang/crates.io-index)" = "da71fef07bc806586090247e971229289f64c210a278ee5ae419314eb386b31d"
+"checksum async-trait 0.1.31 (registry+https://github.com/rust-lang/crates.io-index)" = "26c4f3195085c36ea8d24d32b2f828d23296a9370a28aa39d111f6f16bef9f3b"
 "checksum atty 0.2.14 (registry+https://github.com/rust-lang/crates.io-index)" = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 "checksum autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
-"checksum backtrace 0.3.46 (registry+https://github.com/rust-lang/crates.io-index)" = "b1e692897359247cc6bb902933361652380af0f1b7651ae5c5013407f30e109e"
-"checksum backtrace-sys 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)" = "18fbebbe1c9d1f383a9cc7e8ccdb471b91c8d024ee9c2ca5b5346121fe8b4399"
+"checksum backtrace 0.3.48 (registry+https://github.com/rust-lang/crates.io-index)" = "0df2f85c8a2abbe3b7d7e748052fdd9b76a0458fdeb16ad4223f5eca78c7c130"
 "checksum base64 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b41b7ea54a0c9d92199de89e20e58d49f02f8e699814ef3fdf266f6f748d15c7"
 "checksum base64 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)" = "53d1ccbaf7d9ec9537465a97bf19edc1a4e158ecb49fc16178202238c569cc42"
 "checksum bit-vec 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5f0dc55f2d8a1a85650ac47858bb001b4c0dd73d79e3c455a842925e68d29cd3"
@@ -2118,7 +2128,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum block-cipher-trait 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1c924d49bd09e7c06003acda26cd9742e796e34282ec6c1189404dee0c1f4774"
 "checksum block-padding 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "fa79dedbb091f449f1f39e53edf88d5dbe95f895dae6135a8d7b881fb5af73f5"
 "checksum bloomfilter 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b14238e7ff7b94d429366d4eecd668fd8fe81ffac7f334720d0edbdd87408428"
-"checksum bumpalo 3.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "12ae9db68ad7fac5fe51304d20f016c911539251075a214f8e663babefa35187"
+"checksum bumpalo 3.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5356f1d23ee24a1f785a56d1d1a5f0fd5b0f6a0c0fb2412ce11da71649ab78f6"
 "checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 "checksum byte_string 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "11aade7a05aa8c3a351cedc44c3fc45806430543382fcc4743a9b757a2a0b4ed"
 "checksum byteorder 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
@@ -2127,7 +2137,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 "checksum checked_int_cast 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "17cc5e6b5ab06331c33589842070416baa137e8b0eb912b008cfd4a78ada7919"
 "checksum chrono 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)" = "80094f509cf8b5ae86a4966a39b3ff66cd7e2a3e594accec3743ff3fabeab5b2"
-"checksum clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5067f5bb2d80ef5d68b4c87db81601f0b75bca627bc2ef76b141d7b846a3c6d9"
+"checksum clap 2.33.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bdfa80d47f954d53a35a64987ca1422f495b8d6483c0fe9f7117b36c2a792129"
 "checksum cmac 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6f4a435124bcc292eba031f1f725d7abacdaf13cbf9f935450e8c45aa9e96cad"
 "checksum core-foundation 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "57d24c7a13c43e870e37c1556b74555437870a04514f7685f5b354e090567171"
 "checksum core-foundation-sys 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b3a71ab494c0b5b860bdc8407ae08978052417070c2ced38573a9157ad75b8ac"
@@ -2158,6 +2168,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum futures-util 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "8764574ff08b701a084482c3c7031349104b07ac897393010494beaa18ce32c6"
 "checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
 "checksum getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
+"checksum gimli 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bcc8e0c9bce37868955864dbecd2b1ab2bdf967e6f28066d65aaac620444b65c"
 "checksum h2 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "79b7246d7e4b979c03fa093da39cfb3617a96bbeee6310af63991668d7e843ff"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
 "checksum hermit-abi 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "61565ff7aaace3525556587bd2dc31d4a07071957be715e63ce7b1eccf51a8f4"
@@ -2179,7 +2190,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum json5 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "9e2c66e14426d55dbeadb25a0b0750fbfddb9ddc6ce3f6f193f9fac8fbe36e51"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
-"checksum libc 0.2.69 (registry+https://github.com/rust-lang/crates.io-index)" = "99e85c08494b21a9054e7fe1374a732aeadaff3980b6990b94bfd3a70f690005"
+"checksum libc 0.2.70 (registry+https://github.com/rust-lang/crates.io-index)" = "3baa92041a6fec78c687fa0cc2b3fae8884f743d672cf551bed1d6dac6988d0f"
 "checksum libflate 0.1.27 (registry+https://github.com/rust-lang/crates.io-index)" = "d9135df43b1f5d0e333385cb6e7897ecd1a43d7d11b91ac003f4d2c2d2401fdd"
 "checksum libsodium-sys 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "1c344ff12b90ef8fa1f0fffacd348c1fd041db331841fec9eab23fdb991f5e73"
 "checksum linked-hash-map 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8dd5a6d5999d9907cda8ed67bbd137d3af8085216c2ac62de5be860bd41f304a"
@@ -2204,7 +2215,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)" = "3f6ea62e9d81a77cd3ee9a2a5b9b609447857f3d358704331e4ef39eb247fcba"
 "checksum num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "c62be47e61d1842b9170f0fdeec8eba98e60e90e5446449a0545e5152acd7096"
 "checksum num_cpus 1.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05499f3756671c15885fee9034446956fff3f243d6077b91e5767df161f766b3"
-"checksum once_cell 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b1c601810575c99596d4afc46f78a678c80105117c379eb3650cf99b8a21ce5b"
+"checksum object 0.19.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9cbca9424c482ee628fa549d9c812e2cd22f1180b9222c9200fdfa6eb31aecb2"
+"checksum once_cell 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0b631f7e854af39a1739f401cf34a8a013dfe09eac4fa4dba91e9768bd28168d"
 "checksum opaque-debug 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
 "checksum openssl 0.10.29 (registry+https://github.com/rust-lang/crates.io-index)" = "cee6d85f4cb4c4f59a6a85d5b68a233d280c82e29e822913b9c8b129fbf20bdd"
 "checksum openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
@@ -2215,8 +2227,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum pest_derive 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "833d1ae558dc601e9a60366421196a8d94bc0ac980476d0b67e1d0988d72b2d0"
 "checksum pest_generator 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "99b8db626e31e5b81787b9783425769681b347011cc59471e33ea46d2ea0cf55"
 "checksum pest_meta 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "54be6e404f5317079812fc8f9f5279de376d8856929e21c184ecf6bbd692a11d"
-"checksum pin-project 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)" = "2bbe07cee13ca15295ce93a5b1094d63e0420603e91ffda4f86d4478988916f2"
-"checksum pin-project-internal 0.4.14 (registry+https://github.com/rust-lang/crates.io-index)" = "1b789ec51a10e5a985a9863ef8791412523334d6240fab2cf40dd9fd47496dc6"
+"checksum pin-project 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)" = "81d480cb4e89522ccda96d0eed9af94180b7a5f93fb28f66e1fd7d68431663d1"
+"checksum pin-project-internal 0.4.16 (registry+https://github.com/rust-lang/crates.io-index)" = "a82996f11efccb19b685b14b5df818de31c1edcee3daa256ab5775dd98e72feb"
 "checksum pin-project-lite 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f7505eeebd78492e0f6108f7171c4948dbb120ee8119d9d77d0afa5469bef67f"
 "checksum pin-utils 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 "checksum pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)" = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"
@@ -2227,7 +2239,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum proc-macro2 1.0.12 (registry+https://github.com/rust-lang/crates.io-index)" = "8872cf6f48eee44265156c111456a700ab3483686b3f96df4cf5481c89157319"
 "checksum qrcode 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "16d2f1455f3630c6e5107b4f2b94e74d76dea80736de0981fd27644216cff57f"
 "checksum quick-error 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
-"checksum quote 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "4c1f4b0efa5fc5e8ceb705136bfee52cfdb6a4e3509f770b478cd6ed434232a7"
+"checksum quote 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "42934bc9c8ab0d3b273a16d8551c8f0fcff46be73276ca083ec2414c15c4ba5e"
 "checksum rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 "checksum rand_chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
 "checksum rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
@@ -2263,18 +2275,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum strum 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "57bd81eb48f4c437cadc685403cad539345bf703d78e63707418431cecd4522b"
 "checksum strum_macros 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "87c85aa3f8ea653bfd3ddf25f7ee357ee4d204731f6aa9ad04002306f6e2774c"
 "checksum subtle 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
-"checksum syn 1.0.19 (registry+https://github.com/rust-lang/crates.io-index)" = "e8e5aa70697bb26ee62214ae3288465ecec0000f05182f039b477001f08f5ae7"
+"checksum syn 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)" = "4696caa4048ac7ce2bcd2e484b3cef88c1004e41b8e945a277e2c25dc0b72060"
 "checksum take_mut 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f764005d11ee5f36500a149ace24e00e3da98b0158b3e2d53a7495660d3f4d60"
 "checksum tar 0.4.26 (registry+https://github.com/rust-lang/crates.io-index)" = "b3196bfbffbba3e57481b6ea32249fbaf590396a52505a2615adbb79d9d826d3"
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
 "checksum term_size 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1e4129646ca0ed8f45d09b929036bafad5377103edd06e50bf574b353d2b08d9"
 "checksum termcolor 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb6bfa289a4d7c5766392812c0a1f4c1ba45afa1ad47803c11e1f407d846d75f"
 "checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
-"checksum thiserror 1.0.16 (registry+https://github.com/rust-lang/crates.io-index)" = "d12a1dae4add0f0d568eebc7bf142f145ba1aa2544cafb195c76f0f409091b60"
-"checksum thiserror-impl 1.0.16 (registry+https://github.com/rust-lang/crates.io-index)" = "3f34e0c1caaa462fd840ec6b768946ea1e7842620d94fe29d5b847138f521269"
+"checksum thiserror 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)" = "467e5ff447618a916519a4e0d62772ab14f434897f3d63f05d8700ef1e9b22c1"
+"checksum thiserror-impl 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)" = "e63c1091225b9834089b429bc4a2e01223470e3183e891582909e9d1c4cb55d9"
 "checksum thread_local 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d40c6d1b69745a6ec6fb1ca717914848da4b44ae29d9b3080cbee91d72a69b14"
 "checksum time 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)" = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
-"checksum tokio 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)" = "05c1d570eb1a36f0345a5ce9c6c6e665b70b73d11236912c0b477616aeec47b1"
+"checksum tokio 0.2.21 (registry+https://github.com/rust-lang/crates.io-index)" = "d099fa27b9702bed751524694adbe393e18b36b204da91eb1cbbbbb4a5ee2d58"
 "checksum tokio-macros 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f0c3acc6aa564495a0f2e1d59fab677cd7f81a19994cfc7f3ad0e64301560389"
 "checksum tokio-native-tls 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cd608593a919a8e05a7d1fc6df885e40f6a88d3a70a3a7eff23ff27964eda069"
 "checksum tokio-rustls 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4adb8b3e5f86b707f1b54e7c15b6de52617a823608ccda98a15d3a24222f265a"
diff --git a/Cargo.toml b/Cargo.toml
index 43b2b61e..1fc124e3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,7 +35,7 @@ incremental = false
 panic = "abort"
 
 [features]
-default = ["sodium", "rc4", "aes-cfb", "aes-ctr", "trust-dns", "local-http", "local-http-native-tls"]
+default = ["sodium", "rc4", "aes-cfb", "aes-ctr", "trust-dns", "local-http", "local-tunnel", "local-http-native-tls"]
 # Enables ciphers that depending on libsodium
 # chacha20, xchacha20, chacha20-ietf
 # salsa20, xsalsa20
@@ -69,6 +69,8 @@ local-http-rustls = ["tokio-rustls", "webpki-roots", "rustls-native-certs"]
 # Enable REDIR protocol for sslocal
 # (transparent proxy)
 local-redir = []
+# Enable tunnel protocol for sslocal
+local-tunnel = []
 
 [dependencies]
 log = "0.4"
diff --git a/src/bin/local.rs b/src/bin/local.rs
index 589ff9a3..524a7793 100644
--- a/src/bin/local.rs
+++ b/src/bin/local.rs
@@ -32,6 +32,7 @@ const AVAILABLE_PROTOCOLS: &[&str] = &[
     "socks5",
     #[cfg(feature = "local-http")]
     "http",
+    #[cfg(feature = "local-tunnel")]
     "tunnel",
     #[cfg(feature = "local-redir")]
     "redir",
@@ -129,6 +130,7 @@ fn main() {
         Some("socks5") => ConfigType::Socks5Local,
         #[cfg(feature = "local-http")]
         Some("http") => ConfigType::HttpLocal,
+        #[cfg(feature = "local-tunnel")]
         Some("tunnel") => ConfigType::TunnelLocal,
         #[cfg(feature = "local-redir")]
         Some("redir") => ConfigType::RedirLocal,
diff --git a/src/config.rs b/src/config.rs
index 5f4b615e..f3f8a60d 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -590,6 +590,7 @@ pub enum ConfigType {
     /// Config for tunnel local
     ///
     /// Requires `local` and `forward` configuration
+    #[cfg(feature = "local-tunnel")]
     TunnelLocal,
 
     /// Config for redir local
@@ -601,6 +602,7 @@ pub enum ConfigType {
     /// Config for dns relay local
     ///
     /// Requires `local` configuration
+    #[cfg(feature = "local-dns-relay")]
     DnsLocal,
 
     /// Config for server
@@ -614,7 +616,11 @@ impl ConfigType {
     /// Check if it is local server type
     pub fn is_local(self) -> bool {
         match self {
-            ConfigType::Socks5Local | ConfigType::TunnelLocal | ConfigType::DnsLocal => true,
+            ConfigType::Socks5Local => true,
+            #[cfg(feature = "local-dns-relay")]
+            ConfigType::DnsLocal => true,
+            #[cfg(feature = "local-tunnel")]
+            ConfigType::TunnelLocal => true,
             #[cfg(feature = "local-http")]
             ConfigType::HttpLocal => true,
             #[cfg(feature = "local-redir")]
@@ -626,7 +632,11 @@ impl ConfigType {
     /// Check if it is remote server type
     pub fn is_server(self) -> bool {
         match self {
-            ConfigType::Socks5Local | ConfigType::TunnelLocal | ConfigType::DnsLocal => false,
+            ConfigType::Socks5Local => false,
+            #[cfg(feature = "local-dns-relay")]
+            ConfigType::DnsLocal => false,
+            #[cfg(feature = "local-tunnel")]
+            ConfigType::TunnelLocal => false,
             #[cfg(feature = "local-http")]
             ConfigType::HttpLocal => false,
             #[cfg(feature = "local-redir")]
diff --git a/src/context.rs b/src/context.rs
index 5f87aacf..17d61065 100644
--- a/src/context.rs
+++ b/src/context.rs
@@ -20,6 +20,8 @@ use spin::Mutex;
 #[cfg(feature = "trust-dns")]
 use trust_dns_resolver::TokioAsyncResolver;
 
+#[cfg(any(feature = "sodium", feature = "rc4"))]
+use crate::crypto::CipherType;
 #[cfg(feature = "trust-dns")]
 use crate::relay::dns_resolver::create_resolver;
 #[cfg(not(feature = "local-dns-relay"))]
@@ -31,7 +33,6 @@ use crate::relay::flow::ServerFlowStatistic;
 use crate::{
     acl::AccessControl,
     config::{Config, ConfigType, ServerConfig},
-    crypto::CipherType,
     relay::socks5::Address,
 };
 
diff --git a/src/relay/local.rs b/src/relay/local.rs
index dbad19a2..dfdf7d90 100644
--- a/src/relay/local.rs
+++ b/src/relay/local.rs
@@ -54,6 +54,7 @@ pub async fn run(mut config: Config) -> io::Result<()> {
         #[cfg(target_os = "android")]
         ConfigType::Socks5Local => mode.enable_tcp(),
         // Tunnel mode controlled by this flag
+        #[cfg(feature = "local-tunnel")]
         ConfigType::TunnelLocal => mode.enable_tcp(),
         // HTTP must be TCP
         #[cfg(feature = "local-http")]
@@ -87,7 +88,9 @@ pub async fn run(mut config: Config) -> io::Result<()> {
     };
 
     let enable_udp = match config_type {
-        ConfigType::Socks5Local | ConfigType::TunnelLocal => mode.enable_udp(),
+        ConfigType::Socks5Local => mode.enable_udp(),
+        #[cfg(feature = "local-tunnel")]
+        ConfigType::TunnelLocal => mode.enable_udp(),
         #[cfg(feature = "local-redir")]
         ConfigType::RedirLocal => mode.enable_udp(),
         _ => false,
diff --git a/src/relay/tcprelay/local.rs b/src/relay/tcprelay/local.rs
index a4289b04..ebef5f02 100644
--- a/src/relay/tcprelay/local.rs
+++ b/src/relay/tcprelay/local.rs
@@ -7,12 +7,14 @@ use crate::{config::ConfigType, context::SharedContext};
 /// Starts a TCP local server
 pub async fn run(context: SharedContext) -> io::Result<()> {
     match context.config().config_type {
+        #[cfg(feature = "local-tunnel")]
         ConfigType::TunnelLocal => super::tunnel_local::run(context).await,
         ConfigType::Socks5Local => super::socks5_local::run(context).await,
         #[cfg(feature = "local-http")]
         ConfigType::HttpLocal => super::http_local::run(context).await,
         #[cfg(feature = "local-redir")]
         ConfigType::RedirLocal => super::redir_local::run(context).await,
+        #[cfg(feature = "local-dns-relay")]
         ConfigType::DnsLocal => unreachable!(),
         ConfigType::Server => unreachable!(),
         ConfigType::Manager => unreachable!(),
diff --git a/src/relay/tcprelay/mod.rs b/src/relay/tcprelay/mod.rs
index d026e4e7..06f3f2b9 100644
--- a/src/relay/tcprelay/mod.rs
+++ b/src/relay/tcprelay/mod.rs
@@ -29,6 +29,7 @@ mod redir_local;
 pub mod server;
 mod socks5_local;
 mod stream;
+#[cfg(feature = "local-tunnel")]
 mod tunnel_local;
 mod utils;
 
diff --git a/src/relay/tcprelay/proxy_stream.rs b/src/relay/tcprelay/proxy_stream.rs
index 990b3a4a..f6d80617 100644
--- a/src/relay/tcprelay/proxy_stream.rs
+++ b/src/relay/tcprelay/proxy_stream.rs
@@ -461,11 +461,17 @@ async fn connect_proxy_server(context: &Context, svr_cfg: &ServerConfig) -> io::
 
     let svr_addr = match context.config().config_type {
         ConfigType::Server => svr_cfg.addr(),
-        ConfigType::Socks5Local | ConfigType::TunnelLocal | ConfigType::DnsLocal => svr_cfg.external_addr(),
+
+        ConfigType::Socks5Local => svr_cfg.external_addr(),
+        #[cfg(feature = "local-tunnel")]
+        ConfigType::TunnelLocal => svr_cfg.external_addr(),
+        #[cfg(feature = "local-dns-relay")]
+        ConfigType::DnsLocal => svr_cfg.external_addr(),
         #[cfg(feature = "local-http")]
         ConfigType::HttpLocal => svr_cfg.external_addr(),
         #[cfg(feature = "local-redir")]
         ConfigType::RedirLocal => svr_cfg.external_addr(),
+
         ConfigType::Manager => unreachable!("ConfigType::Manager shouldn't need to connect to proxy server"),
     };
 
diff --git a/src/relay/udprelay/local.rs b/src/relay/udprelay/local.rs
index 0d1fdb28..429b504a 100644
--- a/src/relay/udprelay/local.rs
+++ b/src/relay/udprelay/local.rs
@@ -7,12 +7,14 @@ use crate::{config::ConfigType, context::SharedContext};
 /// Starts a UDP local server
 pub async fn run(context: SharedContext) -> io::Result<()> {
     match context.config().config_type {
+        #[cfg(feature = "local-tunnel")]
         ConfigType::TunnelLocal => super::tunnel_local::run(context).await,
         ConfigType::Socks5Local => super::socks5_local::run(context).await,
         #[cfg(feature = "local-redir")]
         ConfigType::RedirLocal => super::redir_local::run(context).await,
         #[cfg(feature = "local-http")]
         ConfigType::HttpLocal => unreachable!(),
+        #[cfg(feature = "local-dns-relay")]
         ConfigType::DnsLocal => unreachable!(),
         ConfigType::Server => unreachable!(),
         ConfigType::Manager => unreachable!(),
diff --git a/src/relay/udprelay/mod.rs b/src/relay/udprelay/mod.rs
index 0fef65c4..fead9578 100644
--- a/src/relay/udprelay/mod.rs
+++ b/src/relay/udprelay/mod.rs
@@ -59,6 +59,7 @@ mod redir;
 mod redir_local;
 pub mod server;
 mod socks5_local;
+#[cfg(feature = "local-tunnel")]
 mod tunnel_local;
 mod utils;