I am using libcurl for a RESTful library. I am having two problems with a PUT message, I am just trying to send a small content like "hello" via put.

1. My READFUNCTION for PUT's blocks for a very large amount of time (minutes) when I follow the manual at curl.haxx.se and return a 0 indicating I have finished the content. (on os X) When I return something > 0 this succeeds much faster (< 1 sec)

2. When I run this on my linux machine (ubuntu 10.4) this blocking event appears to NEVER return when I return 0, if I change the behavior to return the size written libcurl appends all the data in the http body sending way more data and it fails with a "too much data" message from the server. my readfunction is below, any help would be greatly appreciated.

   I am using libcurl 7.20.1

typedef struct{ void *data; int body_size; int bytes_remaining; int bytes_written;

} postdata;

size_t readfunc(void *ptr, size_t size, size_t nmemb, void *stream) {

if(stream) {

postdata ud = (postdata)stream;

    if(ud->bytes_remaining) {
        if(ud->body_size > size*nmemb) {
            memcpy(ptr, ud->data+ud->bytes_written, size*nmemb);
            ud->bytes_written+=size+nmemb;
     ud->bytes_remaining = ud->body_size-size*nmemb;
            return size*nmemb;
 } else {
     memcpy(ptr, ud->data+ud->bytes_written, ud->bytes_remaining);
            ud->bytes_remaining=0;

return 0; } }