fix #400, parse when got entire http header, by feilong. 2.0.164.

@@ -562,6 +562,7 @@ Supported operating systems and hardware:
 
 ### SRS 2.0 history
 
+* v2.0, 2015-05-22, for [#400](https://github.com/simple-rtmp-server/srs/issues/400), parse when got entire http header, by feilong. 2.0.164.
 * v2.0, 2015-05-19, merge from bravo system, add the rtmfp to bms(commercial srs). 2.0.163.
 * v2.0, 2015-05-10, support push flv stream over HTTP POST to SRS.
 * v2.0, 2015-04-20, support ingest hls live stream to RTMP.

@@ -1447,10 +1447,17 @@ int SrsHttpParser::parse_message_imp(SrsStSocket* skt)
     while (true) {
         ssize_t nparsed = 0;
         
-        // when buffer not empty, parse it.
-        if (buffer->size() > 0) {
-            nparsed = http_parser_execute(&parser, &settings, buffer->bytes(), buffer->size());
-            srs_info("buffer=%d, nparsed=%d, header=%d", buffer->size(), (int)nparsed, header_parsed);
+        // when got entire http header, parse it.
+        // @see https://github.com/simple-rtmp-server/srs/issues/400
+        char* start = buffer->bytes();
+        char* end = start + buffer->size();
+        for (char* p = start; p <= end - 4; p++) {
+            // SRS_HTTP_CRLFCRLF "\r\n\r\n" // 0x0D0A0D0A
+            if (p[0] == SRS_CONSTS_CR && p[1] == SRS_CONSTS_LF && p[2] == SRS_CONSTS_CR && p[3] == SRS_CONSTS_LF) {
+                nparsed = http_parser_execute(&parser, &settings, buffer->bytes(), buffer->size());
+                srs_info("buffer=%d, nparsed=%d, header=%d", buffer->size(), (int)nparsed, header_parsed);
+                break;
+            }
         }
         
         // consume the parsed bytes.

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    163
+#define VERSION_REVISION    164
 
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"