http: Add support for reading http POST reply headers

Signed-off-by: Martin Storsjö <martin@martin.st>

libavformat/http.c

@@ -52,6 +52,7 @@ typedef struct {
     int willclose;          /**< Set if the server correctly handles Connection: close and will close the connection after feeding us the content. */
     int chunked_post;
     int end_chunked_post;   /**< A flag which indicates if the end of chunked encoding has been sent. */
+    int end_header;         /**< A flag which indicates we have finished to read POST reply. */
 } HTTPContext;
 
 #define OFFSET(x) offsetof(HTTPContext, x)
@@ -249,8 +250,10 @@ static int process_line(URLContext *h, char *line, int line_count,
     char *tag, *p, *end;
 
     /* end of header */
-    if (line[0] == '\0')
+    if (line[0] == '\0') {
+        s->end_header = 1;
         return 0;
+    }
 
     p = line;
     if (line_count == 0) {
@@ -462,6 +465,17 @@ static int http_buf_read(URLContext *h, uint8_t *buf, int size)
 static int http_read(URLContext *h, uint8_t *buf, int size)
 {
     HTTPContext *s = h->priv_data;
+    int err, new_location;
+
+    if (s->end_chunked_post) {
+        if (!s->end_header) {
+            err = http_read_header(h, &new_location);
+            if (err < 0)
+                return err;
+        }
+
+        return http_buf_read(h, buf, size);
+    }
 
     if (s->chunksize >= 0) {
         if (!s->chunksize) {