added lib510.c for callback POST using chunked encoding

tests/libtest/Makefile.am

@@ -38,7 +38,7 @@ SUPPORTFILES = first.c test.h
 
 # here are all tools used for running libcurl tests
 noinst_PROGRAMS = lib500 lib501 lib502 lib503 lib504 lib505 lib506 lib507 \
-  lib508 lib509
+  lib508 lib509 lib510
 
 lib500_SOURCES = lib500.c $(SUPPORTFILES)
 lib500_LDADD = $(LIBDIR)/libcurl.la
@@ -79,3 +79,7 @@ lib508_DEPENDENCIES = $(LIBDIR)/libcurl.la
 lib509_SOURCES = lib509.c $(SUPPORTFILES)
 lib509_LDADD = $(LIBDIR)/libcurl.la
 lib509_DEPENDENCIES = $(LIBDIR)/libcurl.la
+
+lib510_SOURCES = lib510.c $(SUPPORTFILES)
+lib510_LDADD = $(LIBDIR)/libcurl.la
+lib510_DEPENDENCIES = $(LIBDIR)/libcurl.la

tests/libtest/lib510.c

@@ -0,0 +1,80 @@
+#include "test.h"
+
+static const char *post[]={
+  "one",
+  "two",
+  "three",
+  "and a final longer crap: four",
+  NULL
+};
+
+
+struct WriteThis {
+  int counter;
+};
+
+static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp)
+{
+  struct WriteThis *pooh = (struct WriteThis *)userp;
+  const char *data;
+
+  if(size*nmemb < 1)
+    return 0;
+
+  data = post[pooh->counter];
+
+  if(data) {
+    size_t len = strlen(data);
+    memcpy(ptr, data, len);
+    pooh->counter++; /* advance pointer */
+    return len;
+  }
+  return 0;                         /* no more data left to deliver */
+}
+
+CURLcode test(char *URL)
+{
+  CURL *curl;
+  CURLcode res=CURLE_OK;
+  struct curl_slist *slist = NULL;
+
+  struct WriteThis pooh;
+  pooh.counter = 0;
+
+  slist = curl_slist_append(slist, "Transfer-Encoding: chunked");
+
+  curl = curl_easy_init();
+  if(curl) {
+    /* First set the URL that is about to receive our POST. */
+    curl_easy_setopt(curl, CURLOPT_URL, URL);
+
+    /* Now specify we want to POST data */
+    curl_easy_setopt(curl, CURLOPT_POST, TRUE);
+
+    /* we want to use our own read function */
+    curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
+
+    /* pointer to pass to our read function */
+    curl_easy_setopt(curl, CURLOPT_INFILE, &pooh);
+
+    /* get verbose debug output please */
+    curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
+
+    /* include headers in the output */
+    curl_easy_setopt(curl, CURLOPT_HEADER, TRUE);
+
+    /* enforce chunked transfer by setting the header */
+    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, slist);
+
+    /* Perform the request, res will get the return code */
+    res = curl_easy_perform(curl);
+
+    /* always cleanup */
+    curl_easy_cleanup(curl);
+
+    /* clean up the headers list */
+    curl_slist_free_all(slist);
+
+  }
+  return res;
+}