Task #7410: Removed the need to include core header files in api.h (ip/tcp/udp/raw.h) to hide the internal implementation from netconn api applications.

src/include/lwip/api.h

@@ -36,13 +36,9 @@
 
 #if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
 
-#include "lwip/pbuf.h"
 #include "lwip/netbuf.h"
 #include "lwip/sys.h"
-#include "lwip/ip.h"
-#include "lwip/raw.h"
-#include "lwip/udp.h"
-#include "lwip/tcp.h"
+#include "lwip/ip_addr.h"
 #include "lwip/err.h"
 
 #ifdef __cplusplus
@@ -56,8 +52,8 @@ extern "C" {
 /* Flags for netconn_write */
 #define NETCONN_NOFLAG 0x00
 #define NETCONN_NOCOPY 0x00 /* Only for source code compatibility */
-#define NETCONN_COPY   TCP_WRITE_FLAG_COPY
-#define NETCONN_MORE   TCP_WRITE_FLAG_MORE
+#define NETCONN_COPY   0x01
+#define NETCONN_MORE   0x02
 
 /* Helpers to process several netconn_types by the same code */
 #define NETCONNTYPE_GROUP(t)    (t&0xF0)
@@ -97,6 +93,11 @@ enum netconn_igmp {
 };
 #endif /* LWIP_IGMP */
 
+struct ip_pcb;
+struct tcp_pcb;
+struct udp_pcb;
+struct raw_pcb;
+
 struct netconn {
   enum netconn_type type;
   enum netconn_state state;

src/include/lwip/api_msg.h

@@ -36,17 +36,14 @@
 
 #if LWIP_NETCONN /* don't build if not configured for use in lwipopts.h */
 
-#include "lwip/pbuf.h"
-#include "lwip/sys.h"
-#include "lwip/ip.h"
-#include "lwip/udp.h"
-#include "lwip/tcp.h"
-#include "lwip/api.h"
+#include "lwip/ip_addr.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+enum netconn_igmp;
+
 /* IP addresses and port numbers are expected to be in
  * the same byte order as in the corresponding pcb.
  */

src/include/lwip/tcpip.h

@@ -39,6 +39,7 @@
 #include "lwip/api_msg.h"
 #include "lwip/netifapi.h"
 #include "lwip/pbuf.h"
+#include "lwip/api.h"
 
 #ifdef __cplusplus
 extern "C" {