/*
* Initialize JDWP stuff.
*
* Allocates a new state structure. If "port" is non-negative, this also
* tries to bind to a listen port. If "port" is less than zero, we assume
* we're preparing for an outbound connection, and return without binding
* to anything.
*
* This may be called several times if we're probing for a port.
*
* Returns 0 on success.
*/
static JdwpNetState* netStartup(short port)
{
JdwpNetState* netState;
int one = 1;
netState = (JdwpNetState*) malloc(sizeof(*netState));
memset(netState, 0, sizeof(*netState));
netState->listenSock = -1;
netState->clientSock = -1;
netState->wakePipe[0] = -1;
netState->wakePipe[1] = -1;
if (port < 0)
return netState;
assert(port != 0);
netState->listenSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (netState->listenSock < 0) {
LOGE("Socket create failed: %s\n", strerror(errno));
goto fail;
}
/* allow immediate re-use */
if (setsockopt(netState->listenSock, SOL_SOCKET, SO_REUSEADDR, &one,
sizeof(one)) < 0)
{
LOGE("setsockopt(SO_REUSEADDR) failed: %s\n", strerror(errno));
goto fail;
}
union {
struct sockaddr_in addrInet;
struct sockaddr addrPlain;
} addr;
addr.addrInet.sin_family = AF_INET;
addr.addrInet.sin_port = htons(port);
inet_aton("127.0.0.1", &addr.addrInet.sin_addr);
if (bind(netState->listenSock, &addr.addrPlain, sizeof(addr)) != 0) {
LOGV("attempt to bind to port %u failed: %s\n", port, strerror(errno));
goto fail;
}
netState->listenPort = port;
LOGVV("+++ bound to port %d\n", netState->listenPort);
if (listen(netState->listenSock, 5) != 0) {
LOGE("Listen failed: %s\n", strerror(errno));
goto fail;
}
return netState;
fail:
netShutdown(netState);
netFree(netState);
return NULL;
}
static void netFreeExtern(JdwpState* state)
{
netFree(state->netState);
}
