diff --git a/deps/llhttp/README.md b/deps/llhttp/README.md
index 7010b90f7ad9e5..c6c061238127f3 100644
--- a/deps/llhttp/README.md
+++ b/deps/llhttp/README.md
@@ -14,6 +14,8 @@ This project aims to:
 * Verifiable
 * Improving benchmarks where possible
 
+More details in [Fedor Indutny's talk at JSConf EU 2019](https://youtu.be/x3k_5Mi66sY)
+
 ## How?
 
 Over time, different approaches for improving [http_parser][0]'s code base
@@ -30,11 +32,10 @@ So far llhttp outperforms http_parser:
 
 |                 | input size |  bandwidth   |  reqs/sec  |   time  |
 |:----------------|-----------:|-------------:|-----------:|--------:|
-| **llhttp** _(C)_ | 8192.00 mb | 1497.88 mb/s | 3020458.87 ops/sec | 5.47 s |
-| **llhttp** _(bitcode)_ | 8192.00 mb | 1131.75 mb/s | 2282171.24 ops/sec | 7.24 s |
+| **llhttp** _(C)_ | 8192.00 mb | 1777.24 mb/s | 3583799.39 ops/sec | 4.61 s |
 | **http_parser** | 8192.00 mb | 694.66 mb/s | 1406180.33 req/sec | 11.79 s |
 
-llhttp is faster by approximately **116%**.
+llhttp is faster by approximately **156%**.
 
 ## Maintenance
 
@@ -77,8 +78,6 @@ settings.on_message_complete = handle_on_message_complete;
  */
 llhttp_init(&parser, HTTP_BOTH, &settings);
 
-/* Use `llhttp_set_type(&parser, HTTP_REQUEST);` to override the mode */
-
 /* Parse request! */
 const char* request = "GET / HTTP/1.1\r\n\r\n";
 int request_len = strlen(request);
diff --git a/deps/llhttp/include/llhttp.h b/deps/llhttp/include/llhttp.h
index 1671af4d088d26..719abe8aed2ba5 100644
--- a/deps/llhttp/include/llhttp.h
+++ b/deps/llhttp/include/llhttp.h
@@ -1,9 +1,9 @@
 #ifndef INCLUDE_LLHTTP_H_
 #define INCLUDE_LLHTTP_H_
 
-#define LLHTTP_VERSION_MAJOR 1
-#define LLHTTP_VERSION_MINOR 1
-#define LLHTTP_VERSION_PATCH 4
+#define LLHTTP_VERSION_MAJOR 2
+#define LLHTTP_VERSION_MINOR 0
+#define LLHTTP_VERSION_PATCH 1
 
 #ifndef INCLUDE_LLHTTP_ITSELF_H_
 #define INCLUDE_LLHTTP_ITSELF_H_
@@ -29,7 +29,7 @@ struct llhttp__internal_s {
   uint8_t http_major;
   uint8_t http_minor;
   uint8_t header_state;
-  uint8_t flags;
+  uint16_t flags;
   uint8_t upgrade;
   uint16_t status_code;
   uint8_t finish;
@@ -85,7 +85,8 @@ enum llhttp_flags {
   F_UPGRADE = 0x10,
   F_CONTENT_LENGTH = 0x20,
   F_SKIPBODY = 0x40,
-  F_TRAILING = 0x80
+  F_TRAILING = 0x80,
+  F_LENIENT = 0x100
 };
 typedef enum llhttp_flags llhttp_flags_t;
 
@@ -297,7 +298,7 @@ llhttp_errno_t llhttp_finish(llhttp_t* parser);
 int llhttp_message_needs_eof(const llhttp_t* parser);
 
 /* Returns `1` if there might be any other messages following the last that was
- * successfuly parsed.
+ * successfully parsed.
  */
 int llhttp_should_keep_alive(const llhttp_t* parser);
 
@@ -353,6 +354,18 @@ const char* llhttp_errno_name(llhttp_errno_t err);
 /* Returns textual name of HTTP method */
 const char* llhttp_method_name(llhttp_method_t method);
 
+
+/* Enables/disables lenient header value parsing (disabled by default).
+ *
+ * Lenient parsing disables header value token checks, extending llhttp's
+ * protocol support to highly non-compliant clients/server. No
+ * `HPE_INVALID_HEADER_TOKEN` will be raised for incorrect header values when
+ * lenient parsing is "on".
+ *
+ * **(USE AT YOUR OWN RISK)**
+ */
+void llhttp_set_lenient(llhttp_t* parser, int enabled);
+
 #ifdef __cplusplus
 }  /* extern "C" */
 #endif
diff --git a/deps/llhttp/src/api.c b/deps/llhttp/src/api.c
index 45227b35afb209..6f7246546dfe1a 100644
--- a/deps/llhttp/src/api.c
+++ b/deps/llhttp/src/api.c
@@ -127,6 +127,15 @@ const char* llhttp_method_name(llhttp_method_t method) {
 }
 
 
+void llhttp_set_lenient(llhttp_t* parser, int enabled) {
+  if (enabled) {
+    parser->flags |= F_LENIENT;
+  } else {
+    parser->flags &= ~F_LENIENT;
+  }
+}
+
+
 /* Callbacks */
 
 
diff --git a/deps/llhttp/src/http.c b/deps/llhttp/src/http.c
index 67834c2d377c49..65d2ee677e4d33 100644
--- a/deps/llhttp/src/http.c
+++ b/deps/llhttp/src/http.c
@@ -74,9 +74,11 @@ int llhttp__after_message_complete(llhttp_t* parser, const char* p,
   int should_keep_alive;
 
   should_keep_alive = llhttp_should_keep_alive(parser);
-  parser->flags = 0;
   parser->finish = HTTP_FINISH_SAFE;
 
+  /* Keep `F_LENIENT` flag between messages, but reset every other flag */
+  parser->flags &= F_LENIENT;
+
   /* NOTE: this is ignored in loose parsing mode */
   return should_keep_alive;
 }
diff --git a/deps/llhttp/src/llhttp.c b/deps/llhttp/src/llhttp.c
index 2786638f3ed6d5..698230f93fe08f 100644
--- a/deps/llhttp/src/llhttp.c
+++ b/deps/llhttp/src/llhttp.c
@@ -2,6 +2,20 @@
 #include <stdint.h>
 #include <string.h>
 
+#ifdef __SSE4_2__
+ #ifdef _MSC_VER
+  #include <nmmintrin.h>
+ #else  /* !_MSC_VER */
+  #include <x86intrin.h>
+ #endif  /* _MSC_VER */
+#endif  /* __SSE4_2__ */
+
+#ifdef _MSC_VER
+ #define ALIGN(n) _declspec(align(n))
+#else  /* !_MSC_VER */
+ #define ALIGN(n) __attribute__((aligned(n)))
+#endif  /* _MSC_VER */
+
 #include "llhttp.h"
 
 typedef int (*llhttp__internal__span_cb)(
@@ -10,147 +24,161 @@ typedef int (*llhttp__internal__span_cb)(
 static const unsigned char llparse_blob0[] = {
   'C', 'L'
 };
-static const unsigned char llparse_blob1[] = {
-  'o', 'n'
+static const unsigned char ALIGN(16) llparse_blob1[] = {
+  0x9, 0x9, 0xc, 0xc, '!', '"', '$', '>', '@', '~', 0x80,
+  0xff
 };
 static const unsigned char llparse_blob2[] = {
-  'e', 'c', 't', 'i', 'o', 'n'
+  'o', 'n'
 };
 static const unsigned char llparse_blob3[] = {
-  'l', 'o', 's', 'e'
+  'e', 'c', 't', 'i', 'o', 'n'
 };
 static const unsigned char llparse_blob4[] = {
-  'e', 'e', 'p', '-', 'a', 'l', 'i', 'v', 'e'
+  'l', 'o', 's', 'e'
 };
 static const unsigned char llparse_blob5[] = {
-  'p', 'g', 'r', 'a', 'd', 'e'
+  'e', 'e', 'p', '-', 'a', 'l', 'i', 'v', 'e'
 };
 static const unsigned char llparse_blob6[] = {
+  'p', 'g', 'r', 'a', 'd', 'e'
+};
+static const unsigned char ALIGN(16) llparse_blob7[] = {
+  0x9, 0x9, ' ', '~', 0x80, 0xfe
+};
+static const unsigned char llparse_blob8[] = {
   'h', 'u', 'n', 'k', 'e', 'd'
 };
-static const unsigned char llparse_blob7[] = {
+static const unsigned char ALIGN(16) llparse_blob9[] = {
+  ' ', '!', '#', '\'', '*', '+', '-', '.', '0', '9', 'A',
+  'Z', '^', 'z', '|', '|'
+};
+static const unsigned char ALIGN(16) llparse_blob10[] = {
+  '~', '~'
+};
+static const unsigned char llparse_blob11[] = {
   'e', 'n', 't', '-', 'l', 'e', 'n', 'g', 't', 'h'
 };
-static const unsigned char llparse_blob8[] = {
+static const unsigned char llparse_blob12[] = {
   'r', 'o', 'x', 'y', '-', 'c', 'o', 'n', 'n', 'e', 'c',
   't', 'i', 'o', 'n'
 };
-static const unsigned char llparse_blob9[] = {
+static const unsigned char llparse_blob13[] = {
   'r', 'a', 'n', 's', 'f', 'e', 'r', '-', 'e', 'n', 'c',
   'o', 'd', 'i', 'n', 'g'
 };
-static const unsigned char llparse_blob10[] = {
+static const unsigned char llparse_blob14[] = {
   'p', 'g', 'r', 'a', 'd', 'e'
 };
-static const unsigned char llparse_blob11[] = {
+static const unsigned char llparse_blob15[] = {
   0xd, 0xa
 };
-static const unsigned char llparse_blob12[] = {
+static const unsigned char llparse_blob16[] = {
   'T', 'T', 'P', '/'
 };
-static const unsigned char llparse_blob13[] = {
+static const unsigned char llparse_blob17[] = {
   'C', 'E', '/'
 };
-static const unsigned char llparse_blob14[] = {
+static const unsigned char llparse_blob18[] = {
   'I', 'N', 'D'
 };
-static const unsigned char llparse_blob15[] = {
+static const unsigned char llparse_blob19[] = {
   'E', 'C', 'K', 'O', 'U', 'T'
 };
-static const unsigned char llparse_blob16[] = {
+static const unsigned char llparse_blob20[] = {
   'N', 'E', 'C', 'T'
 };
-static const unsigned char llparse_blob17[] = {
+static const unsigned char llparse_blob21[] = {
   'E', 'L', 'E', 'T', 'E'
 };
-static const unsigned char llparse_blob18[] = {
+static const unsigned char llparse_blob22[] = {
   'E', 'T'
 };
-static const unsigned char llparse_blob19[] = {
+static const unsigned char llparse_blob23[] = {
   'E', 'A', 'D'
 };
-static const unsigned char llparse_blob20[] = {
+static const unsigned char llparse_blob24[] = {
   'N', 'K'
 };
-static const unsigned char llparse_blob21[] = {
+static const unsigned char llparse_blob25[] = {
   'C', 'K'
 };
-static const unsigned char llparse_blob22[] = {
+static const unsigned char llparse_blob26[] = {
   'S', 'E', 'A', 'R', 'C', 'H'
 };
-static const unsigned char llparse_blob23[] = {
+static const unsigned char llparse_blob27[] = {
   'R', 'G', 'E'
 };
-static const unsigned char llparse_blob24[] = {
+static const unsigned char llparse_blob28[] = {
   'C', 'T', 'I', 'V', 'I', 'T', 'Y'
 };
-static const unsigned char llparse_blob25[] = {
+static const unsigned char llparse_blob29[] = {
   'L', 'E', 'N', 'D', 'A', 'R'
 };
-static const unsigned char llparse_blob26[] = {
+static const unsigned char llparse_blob30[] = {
   'V', 'E'
 };
-static const unsigned char llparse_blob27[] = {
+static const unsigned char llparse_blob31[] = {
   'O', 'T', 'I', 'F', 'Y'
 };
-static const unsigned char llparse_blob28[] = {
+static const unsigned char llparse_blob32[] = {
   'P', 'T', 'I', 'O', 'N', 'S'
 };
-static const unsigned char llparse_blob29[] = {
+static const unsigned char llparse_blob33[] = {
   'T', 'C', 'H'
 };
-static const unsigned char llparse_blob30[] = {
+static const unsigned char llparse_blob34[] = {
   'S', 'T'
 };
-static const unsigned char llparse_blob31[] = {
+static const unsigned char llparse_blob35[] = {
   'O', 'P'
 };
-static const unsigned char llparse_blob32[] = {
+static const unsigned char llparse_blob36[] = {
   'I', 'N', 'D'
 };
-static const unsigned char llparse_blob33[] = {
+static const unsigned char llparse_blob37[] = {
   'A', 'T', 'C', 'H'
 };
-static const unsigned char llparse_blob34[] = {
+static const unsigned char llparse_blob38[] = {
   'G', 'E'
 };
-static const unsigned char llparse_blob35[] = {
+static const unsigned char llparse_blob39[] = {
   'I', 'N', 'D'
 };
-static const unsigned char llparse_blob36[] = {
+static const unsigned char llparse_blob40[] = {
   'O', 'R', 'T'
 };
-static const unsigned char llparse_blob37[] = {
+static const unsigned char llparse_blob41[] = {
   'A', 'R', 'C', 'H'
 };
-static const unsigned char llparse_blob38[] = {
+static const unsigned char llparse_blob42[] = {
   'U', 'R', 'C', 'E'
 };
-static const unsigned char llparse_blob39[] = {
+static const unsigned char llparse_blob43[] = {
   'B', 'S', 'C', 'R', 'I', 'B', 'E'
 };
-static const unsigned char llparse_blob40[] = {
+static const unsigned char llparse_blob44[] = {
   'R', 'A', 'C', 'E'
 };
-static const unsigned char llparse_blob41[] = {
+static const unsigned char llparse_blob45[] = {
   'I', 'N', 'D'
 };
-static const unsigned char llparse_blob42[] = {
+static const unsigned char llparse_blob46[] = {
   'N', 'K'
 };
-static const unsigned char llparse_blob43[] = {
+static const unsigned char llparse_blob47[] = {
   'C', 'K'
 };
-static const unsigned char llparse_blob44[] = {
+static const unsigned char llparse_blob48[] = {
   'U', 'B', 'S', 'C', 'R', 'I', 'B', 'E'
 };
-static const unsigned char llparse_blob45[] = {
+static const unsigned char llparse_blob49[] = {
   'H', 'T', 'T', 'P', '/'
 };
-static const unsigned char llparse_blob46[] = {
+static const unsigned char llparse_blob50[] = {
   'A', 'D'
 };
-static const unsigned char llparse_blob47[] = {
+static const unsigned char llparse_blob51[] = {
   'T', 'P', '/'
 };
 
@@ -259,6 +287,7 @@ enum llparse_state_e {
   s_n_llhttp__internal__n_header_value_discard_ws_almost_done,
   s_n_llhttp__internal__n_header_value_lws,
   s_n_llhttp__internal__n_header_value_almost_done,
+  s_n_llhttp__internal__n_header_value_lenient,
   s_n_llhttp__internal__n_header_value_otherwise,
   s_n_llhttp__internal__n_header_value_connection_token,
   s_n_llhttp__internal__n_header_value_connection_ws,
@@ -655,6 +684,13 @@ int llhttp__internal__c_update_header_state_2(
   return 0;
 }
 
+int llhttp__internal__c_test_flags_2(
+    llhttp__internal_t* state,
+    const unsigned char* p,
+    const unsigned char* endp) {
+  return (state->flags & 256) == 256;
+}
+
 int llhttp__internal__c_update_header_state_4(
     llhttp__internal_t* state,
     const unsigned char* p,
@@ -679,7 +715,7 @@ int llhttp__internal__c_update_header_state_6(
   return 0;
 }
 
-int llhttp__internal__c_test_flags_2(
+int llhttp__internal__c_test_flags_3(
     llhttp__internal_t* state,
     const unsigned char* p,
     const unsigned char* endp) {
@@ -1394,6 +1430,26 @@ static llparse_state_t llhttp__internal__run(
       /* UNREACHABLE */;
       abort();
     }
+    case s_n_llhttp__internal__n_header_value_lenient:
+    s_n_llhttp__internal__n_header_value_lenient: {
+      if (p == endp) {
+        return s_n_llhttp__internal__n_header_value_lenient;
+      }
+      switch (*p) {
+        case 10: {
+          goto s_n_llhttp__internal__n_span_end_llhttp__on_header_value_1;
+        }
+        case 13: {
+          goto s_n_llhttp__internal__n_span_end_llhttp__on_header_value_3;
+        }
+        default: {
+          p++;
+          goto s_n_llhttp__internal__n_header_value_lenient;
+        }
+      }
+      /* UNREACHABLE */;
+      abort();
+    }
     case s_n_llhttp__internal__n_header_value_otherwise:
     s_n_llhttp__internal__n_header_value_otherwise: {
       if (p == endp) {
@@ -1407,7 +1463,7 @@ static llparse_state_t llhttp__internal__run(
           goto s_n_llhttp__internal__n_span_end_llhttp__on_header_value_2;
         }
         default: {
-          goto s_n_llhttp__internal__n_error_13;
+          goto s_n_llhttp__internal__n_invoke_test_flags_2;
         }
       }
       /* UNREACHABLE */;
@@ -1486,7 +1542,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_value_connection_1;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob3, 4);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob4, 4);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -1510,7 +1566,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_value_connection_2;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob4, 9);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob5, 9);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -1534,7 +1590,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_value_connection_3;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob5, 6);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob6, 6);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -1617,6 +1673,30 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_value;
       }
+      #ifdef __SSE4_2__
+      if (endp - p >= 16) {
+        __m128i ranges;
+        __m128i input;
+        int avail;
+        int match_len;
+      
+        /* Load input */
+        input = _mm_loadu_si128((__m128i const*) p);
+        ranges = _mm_loadu_si128((__m128i const*) llparse_blob7);
+      
+        /* Find first character that does not match `ranges` */
+        match_len = _mm_cmpestri(ranges, 6,
+            input, 16,
+            _SIDD_UBYTE_OPS | _SIDD_CMP_RANGES |
+              _SIDD_NEGATIVE_POLARITY);
+      
+        if (match_len != 0) {
+          p += match_len;
+          goto s_n_llhttp__internal__n_header_value;
+        }
+        goto s_n_llhttp__internal__n_header_value_otherwise;
+      }
+      #endif  /* __SSE4_2__ */
       switch (lookup_table[(uint8_t) *p]) {
         case 1: {
           p++;
@@ -1679,7 +1759,7 @@ static llparse_state_t llhttp__internal__run(
           goto s_n_llhttp__internal__n_header_value_content_length_ws;
         }
         default: {
-          goto s_n_llhttp__internal__n_span_end_llhttp__on_header_value_4;
+          goto s_n_llhttp__internal__n_span_end_llhttp__on_header_value_5;
         }
       }
       /* UNREACHABLE */;
@@ -1755,7 +1835,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_value_te_chunked_1;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob6, 6);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob8, 6);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -1877,6 +1957,42 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_field_general;
       }
+      #ifdef __SSE4_2__
+      if (endp - p >= 16) {
+        __m128i ranges;
+        __m128i input;
+        int avail;
+        int match_len;
+      
+        /* Load input */
+        input = _mm_loadu_si128((__m128i const*) p);
+        ranges = _mm_loadu_si128((__m128i const*) llparse_blob9);
+      
+        /* Find first character that does not match `ranges` */
+        match_len = _mm_cmpestri(ranges, 16,
+            input, 16,
+            _SIDD_UBYTE_OPS | _SIDD_CMP_RANGES |
+              _SIDD_NEGATIVE_POLARITY);
+      
+        if (match_len != 0) {
+          p += match_len;
+          goto s_n_llhttp__internal__n_header_field_general;
+        }
+        ranges = _mm_loadu_si128((__m128i const*) llparse_blob10);
+      
+        /* Find first character that does not match `ranges` */
+        match_len = _mm_cmpestri(ranges, 2,
+            input, 16,
+            _SIDD_UBYTE_OPS | _SIDD_CMP_RANGES |
+              _SIDD_NEGATIVE_POLARITY);
+      
+        if (match_len != 0) {
+          p += match_len;
+          goto s_n_llhttp__internal__n_header_field_general;
+        }
+        goto s_n_llhttp__internal__n_header_field_general_otherwise;
+      }
+      #endif  /* __SSE4_2__ */
       switch (lookup_table[(uint8_t) *p]) {
         case 1: {
           p++;
@@ -1916,7 +2032,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_field_3;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob2, 6);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob3, 6);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -1941,7 +2057,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_field_4;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob7, 10);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob11, 10);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -1987,7 +2103,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_field_1;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob1, 2);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob2, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -2011,7 +2127,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_field_5;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob8, 15);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob12, 15);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -2036,7 +2152,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_field_6;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob9, 16);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob13, 16);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -2061,7 +2177,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_header_field_7;
       }
-      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob10, 6);
+      match_seq = llparse__match_sequence_to_lower_unsafe(state, p, endp, llparse_blob14, 6);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -2156,7 +2272,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_url_skip_lf_to_http09;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob11, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob15, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -2361,7 +2477,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_req_http_start_1;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob12, 4);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob16, 4);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -2385,7 +2501,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_req_http_start_2;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob13, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob17, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -2591,6 +2707,30 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_url_path;
       }
+      #ifdef __SSE4_2__
+      if (endp - p >= 16) {
+        __m128i ranges;
+        __m128i input;
+        int avail;
+        int match_len;
+      
+        /* Load input */
+        input = _mm_loadu_si128((__m128i const*) p);
+        ranges = _mm_loadu_si128((__m128i const*) llparse_blob1);
+      
+        /* Find first character that does not match `ranges` */
+        match_len = _mm_cmpestri(ranges, 12,
+            input, 16,
+            _SIDD_UBYTE_OPS | _SIDD_CMP_RANGES |
+              _SIDD_NEGATIVE_POLARITY);
+      
+        if (match_len != 0) {
+          p += match_len;
+          goto s_n_llhttp__internal__n_url_path;
+        }
+        goto s_n_llhttp__internal__n_url_query_or_fragment;
+      }
+      #endif  /* __SSE4_2__ */
       switch (lookup_table[(uint8_t) *p]) {
         case 1: {
           p++;
@@ -2970,7 +3110,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_2;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob14, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob18, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -2995,7 +3135,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_4;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob15, 6);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob19, 6);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3020,7 +3160,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_6;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob16, 4);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob20, 4);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3105,7 +3245,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_8;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob17, 5);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob21, 5);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3130,7 +3270,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_9;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob18, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob22, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3155,7 +3295,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_10;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob19, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob23, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3180,7 +3320,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_12;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob20, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob24, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3205,7 +3345,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_13;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob21, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob25, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3251,7 +3391,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_15;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob22, 6);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob26, 6);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3276,7 +3416,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_16;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob23, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob27, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3301,7 +3441,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_18;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob24, 7);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob28, 7);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3326,7 +3466,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_20;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob25, 6);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob29, 6);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3411,7 +3551,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_22;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob26, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob30, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3465,7 +3605,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_23;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob27, 5);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob31, 5);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3490,7 +3630,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_24;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob28, 6);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob32, 6);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3515,7 +3655,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_26;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob29, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob33, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3540,7 +3680,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_27;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob30, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob34, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3565,7 +3705,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_30;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob32, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob36, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3590,7 +3730,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_31;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob33, 4);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob37, 4);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3636,7 +3776,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_28;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob31, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob35, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3660,7 +3800,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_33;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob34, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob38, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3736,7 +3876,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_36;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob35, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob39, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3761,7 +3901,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_37;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob36, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob40, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3824,7 +3964,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_39;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob37, 4);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob41, 4);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3849,7 +3989,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_40;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob38, 4);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob42, 4);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3874,7 +4014,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_41;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob39, 7);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob43, 7);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3924,7 +4064,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_42;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob40, 4);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob44, 4);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3949,7 +4089,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_45;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob41, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob45, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3974,7 +4114,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_47;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob42, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob46, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -3999,7 +4139,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_48;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob43, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob47, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -4045,7 +4185,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_req_49;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob44, 8);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob48, 8);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -4493,7 +4633,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_start_res;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob45, 5);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob49, 5);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -4517,7 +4657,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_req_or_res_method_2;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob46, 2);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob50, 2);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -4542,7 +4682,7 @@ static llparse_state_t llhttp__internal__run(
       if (p == endp) {
         return s_n_llhttp__internal__n_req_or_res_method_3;
       }
-      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob47, 3);
+      match_seq = llparse__match_sequence_id(state, p, endp, llparse_blob51, 3);
       p = match_seq.current;
       switch (match_seq.status) {
         case kMatchComplete: {
@@ -5191,6 +5331,24 @@ static llparse_state_t llhttp__internal__run(
     /* UNREACHABLE */;
     abort();
   }
+  s_n_llhttp__internal__n_span_end_llhttp__on_header_value_3: {
+    const unsigned char* start;
+    int err;
+    
+    start = state->_span_pos0;
+    state->_span_pos0 = NULL;
+    err = llhttp__on_header_value(state, start, p);
+    if (err != 0) {
+      state->error = err;
+      state->error_pos = (const char*) (p + 1);
+      state->_current = (void*) (intptr_t) s_n_llhttp__internal__n_header_value_almost_done;
+      return s_error;
+    }
+    p++;
+    goto s_n_llhttp__internal__n_header_value_almost_done;
+    /* UNREACHABLE */;
+    abort();
+  }
   s_n_llhttp__internal__n_error_13: {
     state->error = 0xa;
     state->reason = "Invalid header value char";
@@ -5200,6 +5358,16 @@ static llparse_state_t llhttp__internal__run(
     /* UNREACHABLE */;
     abort();
   }
+  s_n_llhttp__internal__n_invoke_test_flags_2: {
+    switch (llhttp__internal__c_test_flags_2(state, p, endp)) {
+      case 1:
+        goto s_n_llhttp__internal__n_header_value_lenient;
+      default:
+        goto s_n_llhttp__internal__n_error_13;
+    }
+    /* UNREACHABLE */;
+    abort();
+  }
   s_n_llhttp__internal__n_invoke_update_header_state_3: {
     switch (llhttp__internal__c_update_header_state(state, p, endp)) {
       default:
@@ -5288,7 +5456,7 @@ static llparse_state_t llhttp__internal__run(
     /* UNREACHABLE */;
     abort();
   }
-  s_n_llhttp__internal__n_span_end_llhttp__on_header_value_3: {
+  s_n_llhttp__internal__n_span_end_llhttp__on_header_value_4: {
     const unsigned char* start;
     int err;
     
@@ -5308,7 +5476,7 @@ static llparse_state_t llhttp__internal__run(
   s_n_llhttp__internal__n_invoke_mul_add_content_length_1: {
     switch (llhttp__internal__c_mul_add_content_length_1(state, p, endp, match)) {
       case 1:
-        goto s_n_llhttp__internal__n_span_end_llhttp__on_header_value_3;
+        goto s_n_llhttp__internal__n_span_end_llhttp__on_header_value_4;
       default:
         goto s_n_llhttp__internal__n_header_value_content_length;
     }
@@ -5331,7 +5499,7 @@ static llparse_state_t llhttp__internal__run(
     /* UNREACHABLE */;
     abort();
   }
-  s_n_llhttp__internal__n_span_end_llhttp__on_header_value_4: {
+  s_n_llhttp__internal__n_span_end_llhttp__on_header_value_5: {
     const unsigned char* start;
     int err;
     
@@ -5357,8 +5525,8 @@ static llparse_state_t llhttp__internal__run(
     /* UNREACHABLE */;
     abort();
   }
-  s_n_llhttp__internal__n_invoke_test_flags_2: {
-    switch (llhttp__internal__c_test_flags_2(state, p, endp)) {
+  s_n_llhttp__internal__n_invoke_test_flags_3: {
+    switch (llhttp__internal__c_test_flags_3(state, p, endp)) {
       case 0:
         goto s_n_llhttp__internal__n_header_value_content_length;
       default:
@@ -5388,7 +5556,7 @@ static llparse_state_t llhttp__internal__run(
       case 1:
         goto s_n_llhttp__internal__n_header_value_connection;
       case 2:
-        goto s_n_llhttp__internal__n_invoke_test_flags_2;
+        goto s_n_llhttp__internal__n_invoke_test_flags_3;
       case 3:
         goto s_n_llhttp__internal__n_header_value_te_chunked;
       case 4: