A field name is really a token

Author: uNetworkingAB

src/HttpParser.h

@@ -217,15 +217,15 @@ struct HttpParser {
         return unsignedIntegerValue;
     }
 
-    /* RFC 9110 16.3.1 Field Name Registry (TLDR; alnum + hyphen is allowed)
-     * [...] It MUST conform to the field-name syntax defined in Section 5.1,
-     * and it SHOULD be restricted to just letters, digits,
-     * and hyphen ('-') characters, with the first character being a letter. */
-    static inline bool isFieldNameByte(unsigned char x) {
-        return (x == '-') |
-        ((x > '/') & (x < ':')) |
-        ((x > '@') & (x < '[')) |
-        ((x > 96) & (x < '{'));
+    /* RFC 9110 5.6.2. Tokens */
+    static inline bool isFieldNameByte(unsigned char c)
+    {
+        return (c > 32) & (c < 127) & (c != '(') &
+            (c != ')') & (c != ',') & (c != '/') &
+            (c != ':') & (c != ';') & (c != '<') &
+            (c != '=') & (c != '>') & (c != '?') &
+            (c != '@') & (c != '[') & (c != '\\') &
+            (c != ']') & (c != '{') & (c != '}');
     }
 
     static inline uint64_t hasLess(uint64_t x, uint64_t n) {
@@ -249,18 +249,18 @@ struct HttpParser {
     }
 
     static inline void *consumeFieldName(char *p) {
-        for (; true; p += 8) {
-            uint64_t word;
-            memcpy(&word, p, sizeof(uint64_t));
-            if (notFieldNameWord(word)) {
+        //for (; true; p += 8) {
+            //uint64_t word;
+            //memcpy(&word, p, sizeof(uint64_t));
+            //if (notFieldNameWord(word)) {
                 while (isFieldNameByte(*(unsigned char *)p)) {
                     *(p++) |= 0x20;
                 }
                 return (void *)p;
-            }
-            word |= 0x2020202020202020ull;
-            memcpy(p, &word, sizeof(uint64_t));
-        }
+            //}
+            //word |= 0x2020202020202020ull;
+            //memcpy(p, &word, sizeof(uint64_t));
+        //}
     }
 
     /* Puts method as key, target as value and returns non-null (or nullptr on error). */