Revert "nghttpx: Don't capitalize h1 header fields"

This reverts commit f994664934.

src/http2.cc

@@ -238,6 +238,17 @@ StringRef stringify_status(BlockAllocator &balloc, unsigned int status_code) {
   }
 }
 
+void capitalize(DefaultMemchunks *buf, const StringRef &s) {
+  buf->append(util::upcase(s[0]));
+  for (size_t i = 1; i < s.size(); ++i) {
+    if (s[i - 1] == '-') {
+      buf->append(util::upcase(s[i]));
+    } else {
+      buf->append(s[i]);
+    }
+  }
+}
+
 bool lws(const char *value) {
   for (; *value; ++value) {
     switch (*value) {
@@ -406,7 +417,7 @@ void build_http1_headers_from_headers(DefaultMemchunks *buf,
     case HD_X_FORWARDED_PROTO:
       continue;
     }
-    buf->append(kv.name);
+    capitalize(buf, kv.name);
     buf->append(": ");
     buf->append(kv.value);
     buf->append("\r\n");

src/http2.h

@@ -101,6 +101,8 @@ StringRef get_reason_phrase(unsigned int status_code);
 // Returns string version of |status_code|. (e.g., "404")
 StringRef stringify_status(BlockAllocator &balloc, unsigned int status_code);
 
+void capitalize(DefaultMemchunks *buf, const StringRef &s);
+
 // Returns true if |value| is LWS
 bool lws(const char *value);
 

src/http2_test.cc

@@ -187,15 +187,15 @@ void test_http2_build_http1_headers_from_headers(void) {
   DefaultMemchunks buf(&pool);
   http2::build_http1_headers_from_headers(&buf, headers);
   auto hdrs = std::string(buf.head->pos, buf.head->last);
-  CU_ASSERT("alpha: 0\r\n"
-            "bravo: 1\r\n"
-            "delta: 4\r\n"
-            "expect: 5\r\n"
-            "foxtrot: 6\r\n"
-            "tango: 7\r\n"
-            "te: 8\r\n"
-            "te: 9\r\n"
-            "zulu: 12\r\n" == hdrs);
+  CU_ASSERT("Alpha: 0\r\n"
+            "Bravo: 1\r\n"
+            "Delta: 4\r\n"
+            "Expect: 5\r\n"
+            "Foxtrot: 6\r\n"
+            "Tango: 7\r\n"
+            "Te: 8\r\n"
+            "Te: 9\r\n"
+            "Zulu: 12\r\n" == hdrs);
 }
 
 void test_http2_lws(void) {

src/shrpx_https_upstream.cc

@@ -896,7 +896,7 @@ int HttpsUpstream::send_reply(Downstream *downstream, const uint8_t *body,
     if (kv.name.empty() || kv.name[0] == ':') {
       continue;
     }
-    output->append(kv.name);
+    http2::capitalize(output, kv.name);
     output->append(": ");
     output->append(kv.value);
     output->append("\r\n");