if CURLOPT_POSTFIELDS isn't set, but CURLOPT_POST is, we will assume that

we should read the POST-data from the read callback

lib/http.c

@@ -814,7 +814,9 @@ CURLcode Curl_http(struct connectdata *conn)
       headers = headers->next;
     }
 
-    if(HTTPREQ_POST_FORM == data->set.httpreq) {
+    switch(data->set.httpreq) {
+
+    case HTTPREQ_POST_FORM:
       if(Curl_FormInit(&http->form, http->sendit)) {
         failf(data, "Internal HTTP POST error!");
         return CURLE_HTTP_POST_ERROR;
@@ -883,9 +885,9 @@ CURLcode Curl_http(struct connectdata *conn)
         Curl_formclean(http->sendit); /* free that whole lot */
         return result;
       }
-    }
-    else if(HTTPREQ_PUT == data->set.httpreq) {
-      /* Let's PUT the data to the server! */
+      break;
+
+    case HTTPREQ_PUT: /* Let's PUT the data to the server! */
 
       if(data->set.infilesize>0) {
         add_bufferf(req_buffer,
@@ -911,51 +913,51 @@ CURLcode Curl_http(struct connectdata *conn)
                                &http->writebytecount);
       if(result)
         return result;
-      
-    }
-    else {
-      if(HTTPREQ_POST == data->set.httpreq) {
-        /* this is the simple POST, using x-www-form-urlencoded style */
-
-        if(!data->set.postfields) {
-          /*
-           * This is an attempt to do a POST without having anything to
-           * actually send. Let's make a NULL pointer equal "" here. Good/bad
-           * ?
-           */
-          data->set.postfields = (char *)"";
-          data->set.postfieldsize = 0; /* it might been set to something illegal,
-                                      anything > 0 would be! */
-        }
+      break;
 
-        if(!checkheaders(data, "Content-Length:"))
-          /* we allow replacing this header, although it isn't very wise to
-             actually set your own */
-          add_bufferf(req_buffer,
-                      "Content-Length: %d\r\n",
-                      (data->set.postfieldsize?data->set.postfieldsize:
-                       strlen(data->set.postfields)) );
+    case HTTPREQ_POST:
+      /* this is the simple POST, using x-www-form-urlencoded style */
 
-        if(!checkheaders(data, "Content-Type:"))
-          add_bufferf(req_buffer,
-                      "Content-Type: application/x-www-form-urlencoded\r\n");
+      if(!checkheaders(data, "Content-Length:"))
+        /* we allow replacing this header, although it isn't very wise to
+           actually set your own */
+        add_bufferf(req_buffer,
+                    "Content-Length: %d\r\n",
+                    (data->set.postfieldsize?data->set.postfieldsize:
+                     strlen(data->set.postfields)) );
 
-        /* and here comes the actual data */
-        if(data->set.postfieldsize) {
-          add_buffer(req_buffer, "\r\n", 2);
-          add_buffer(req_buffer, data->set.postfields,
-                     data->set.postfieldsize);
-        }
-        else {
-          add_bufferf(req_buffer,
-                      "\r\n"
-                      "%s",
-                      data->set.postfields );
-        }
+      if(!checkheaders(data, "Content-Type:"))
+        add_bufferf(req_buffer,
+                    "Content-Type: application/x-www-form-urlencoded\r\n");
+
+      add_buffer(req_buffer, "\r\n", 2);
+
+      /* and here comes the actual data */
+      if(data->set.postfieldsize && data->set.postfields) {
+        add_buffer(req_buffer, data->set.postfields,
+                   data->set.postfieldsize);
       }
+      else if(data->set.postfields)
+        add_bufferf(req_buffer,
+                    "%s",
+                    data->set.postfields );
+
+      /* issue the request */
+      result = add_buffer_send(conn->firstsocket, conn, req_buffer,
+                               &data->info.request_size);
+
+      if(result)
+        failf(data, "Failed sending HTTP POST request");
       else
-        add_buffer(req_buffer, "\r\n", 2);
+        result =
+          Curl_Transfer(conn, conn->firstsocket, -1, TRUE, bytecount,
+                        data->set.postfields?-1:conn->firstsocket,
+                        data->set.postfields?NULL:&http->writebytecount);
+      break;
 
+    default:
+      add_buffer(req_buffer, "\r\n", 2);
+      
       /* issue the request */
       result = add_buffer_send(conn->firstsocket, conn, req_buffer,
                                &data->info.request_size);