Toshiyuki Maezawa reported that when doing a POST with a read callback,

libcurl didn't properly send an Expect: 100-continue header. It does now.

tests/data/test508

@@ -40,6 +40,7 @@ Pragma: no-cache
 Accept: */*
 Content-Length: 45
 Content-Type: application/x-www-form-urlencoded
+Expect: 100-continue
 
 this is what we post to the silly web server
 </protocol>

tests/data/test510

@@ -40,6 +40,7 @@ Pragma: no-cache
 Accept: */*
 Transfer-Encoding: chunked
 Content-Type: application/x-www-form-urlencoded
+Expect: 100-continue
 
 3
 one

tests/data/test513

@@ -31,6 +31,7 @@ Pragma: no-cache
 Accept: */*
 Content-Length: 1
 Content-Type: application/x-www-form-urlencoded
+Expect: 100-continue
 
 </protocol>
 # 42 - aborted by callback

tests/data/test515

@@ -41,6 +41,7 @@ Pragma: no-cache
 Accept: */*
 Content-Length: 0
 Content-Type: application/x-www-form-urlencoded
+Expect: 100-continue
 
 </protocol>
 </verify>