Misc changes

ext/lwipopts.h

@@ -116,7 +116,7 @@
 #define MEM_SIZE                        1024 * 1024 * 64
 #define TCP_SND_BUF                     1024 * 63
 
-
+#define TCP_SND_QUEUELEN                1024
 /*------------------------------------------------------------------------------
 -------------------------- Internal Memory Pool Sizes --------------------------
 ------------------------------------------------------------------------------*/
@@ -157,7 +157,7 @@
  * MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP segments.
  * (requires the LWIP_TCP option)
  */
-#define MEMP_NUM_TCP_SEG                128
+#define MEMP_NUM_TCP_SEG                1024
 
 /**
  * MEMP_NUM_REASSDATA: the number of simultaneously IP packets queued for

netcon/Intercept.c

@@ -494,6 +494,13 @@ int connect(CONNECT_SIG)
     return err;
   }
 
+  //int flags = fcntl(__fd, F_GETFD);
+  //dwr("connect(): socket flags = %d\n", flags);
+
+  if(sock_type && O_NONBLOCK) {
+    dwr("connect(): O_NONBLOCK\n");
+  }
+
   /* assemble and route command */
   int err;
   char cmd[BUF_SZ];
@@ -507,6 +514,10 @@ int connect(CONNECT_SIG)
   memcpy(&cmd[1], &rpc_st, sizeof(struct connect_st));
   pthread_mutex_lock(&lock);
   send_command(fdret_sock, cmd);
+  if(sock_type && O_NONBLOCK) {
+    //pthread_mutex_unlock(&lock);
+    //return EINPROGRESS;
+  }
   err = get_retval();
   pthread_mutex_unlock(&lock);
   return err;

netcon/NetconEthernetTap.cpp

@@ -318,6 +318,8 @@ void NetconEthernetTap::threadMain()
 	fprintf(stderr, "_threadMain()\n");
 	uint64_t prev_tcp_time = 0;
 	uint64_t prev_etharp_time = 0;
+fprintf(stderr, "- TCP_SND_QUEUELEN = %d\n", TCP_SND_QUEUELEN);
+fprintf(stderr, "- TCP_MAXRTX = %d\n", TCP_MAXRTX);
 
 /*
 	fprintf(stderr, "- MEM_SIZE = %dM\n", MEM_SIZE / (1024*1024));
@@ -327,7 +329,7 @@ void NetconEthernetTap::threadMain()
 	fprintf(stderr, "- MEMP_NUM_TCP_PCB_LISTEN = %d\n", MEMP_NUM_TCP_PCB_LISTEN);
 	fprintf(stderr, "- MEMP_NUM_TCP_SEG = %d\n", MEMP_NUM_TCP_SEG);
 	fprintf(stderr, "- PBUF_POOL_SIZE = %d\n", PBUF_POOL_SIZE);
-	fprintf(stderr, "- TCP_SND_QUEUELEN = %d\n", TCP_SND_QUEUELEN);
+
 	fprintf(stderr, "- IP_REASSEMBLY = %d\n", IP_REASSEMBLY);
 	fprintf(stderr, "- TCP_WND = %d\n", TCP_WND);
 	fprintf(stderr, "- TCP_MSS = %d\n", TCP_MSS);
@@ -376,9 +378,13 @@ void NetconEthernetTap::phyOnFileDescriptorActivity(PhySocket *sock,void **uptr,
 {
 	if(readable) {
 		TcpConnection *conn = (TcpConnection*)*uptr;
-		Mutex::Lock _l(lwipstack->_lock);
 		if(conn->dataSock) // Sometimes a connection may be closed via nc_recved, check first
+		{
+			//Mutex::Lock _l(lwipstack->_lock);
+			//lwipstack->_lock.lock();
 			handle_write(conn);
+			//lwipstack->_lock.unlock();
+		}
 	}
 	else {
 		fprintf(stderr, "phyOnFileDescriptorActivity(): PhySocket not readable\n");
@@ -1144,8 +1150,9 @@ void NetconEthernetTap::handle_write(TcpConnection *conn)
 				// NOTE: this assumes that lwipstack->_lock is locked, either
 				// because we are in a callback or have locked it manually.
 				int err = lwipstack->_tcp_write(conn->pcb, &conn->buf, r, TCP_WRITE_FLAG_COPY);
+				lwipstack->_tcp_output(conn->pcb);
 				if(err != ERR_OK) {
-					fprintf(stderr, "handle_write(): error while writing to PCB\n");
+					fprintf(stderr, "handle_write(): error while writing to PCB, (err = %d)\n", err);
 					return;
 				}
 				else {