cb99f0b11bdeee5dfa76064d38b6410da0f4a709
max
  Thu Sep 10 00:55:21 2026 -0700
Centralize CGI Content-Type printing in one cgiPrintContentType() helper

Around 90 places across the tree hand-rolled the CGI response header, each
with its own spelling: "Content-Type:" or "Content-type:", \n or \r\n, and
the terminating blank line written as part of the same string, as a separate
puts("\n") (which emits two newlines, so a stray blank line led the body) or
as printf("\r\n\r\n") (two blank lines).  A handful forgot the terminator
entirely and relied on a following header to supply it.

cgiPrintContentType() in lib/cheapcgi.c now writes the Content-Type line and
the blank line that ends the header.  Header lines are not ordered, so the
callers that also send Status, Set-Cookie, Content-Disposition, Content-Length
or X-Sendfile write those first and call this last to close the header; that
keeps it to a single helper rather than a print-the-line / end-the-header pair
that a caller can half-use.  cart.c's existing httpHeaders list already worked
this way.

Only the CGI response path is touched.  The dyStringPrintf("Content-type: ...")
calls that build outgoing HTTP *requests* (genomeSpace, oauthLogin, eapMetaSync,
edwWebAuthLogin, ga4ghToBed) are unrelated and left alone.

Also fills out the apiKey error message in botDelay.c to say where to create a
key and that keys are server-specific.

No behavior change on the wire beyond dropping those stray blank lines and
adding the missing newline after Retry-After.

diff --git src/ameme/ameme.c src/ameme/ameme.c
index df9249e4f5c..1723503da92 100644
--- src/ameme/ameme.c
+++ src/ameme/ameme.c
@@ -3222,31 +3222,31 @@
 else
     htmlOut = stdout;
 
 initRandom(); /* This one needs to be after htmlOut set up. */
 
 /* Figure out if we're going to find a pattern in sequences, or just display
  * where a pre-computed pattern occurs in sequences. */
 isMotifMatcher = cgiVarExists("motifMatcher");
 if (isMotifMatcher)
     programName = "Motif Matcher";
 else
     programName = "Improbizer";
 
 /* Print out html header.  Make background color brilliant white. */
 if (isFromWeb)
-    puts("Content-Type:text/html\n");
+    cgiPrintContentType("text/html");
 fprintf(htmlOut, "<HEAD>\n%s<TITLE>%s Results</TITLE>\n</HEAD>\n\n", getCspMetaHeader(), programName);
 fprintf(htmlOut, "<BODY BGCOLOR='#FFFFFF'>\n\n");
 
 /* Wrap error handling et. around doMiddle. */
 if (isFromWeb)
     htmEmptyShell(doMiddle, NULL);
 else
    doMiddle();
 
 //carefulCheckHeap();
 
 /* Write end of html. */
 htmEnd(htmlOut);
 return 0;
 }