--- /dev/null
+/* buffered transport using the TCP plugin or a custom one */
+
+/* Copyright (c) 2004, 2005, 2006, 2007, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <stdlib.h>
+#include <string.h> /* memset */
+
+#include "portable.h"
+#include "xbt/misc.h"
+#include "xbt/sysdep.h"
+#include "xbt/ex.h"
+#include "xbt/xbt_socket_private.h"
+
+#include "gras/Transport/transport_interface.h" /* FIXME */
+#include "gras/Virtu/virtu_interface.h" /* FIXME */
+#include "gras/Msg/msg_interface.h" /* FIXME */
+extern int gras_trp_libdata_id; /* FIXME */
+
+/* FIXME maybe READV is sometime a good thing? */
+#undef HAVE_READV
+
+#ifdef HAVE_READV
+#include <sys/uio.h>
+#endif
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_trp_tcp, xbt_trp,
+ "TCP buffered transport");
+
+/***
+ *** Specific socket part
+ ***/
+
+typedef struct {
+ int port; /* port on this side */
+ int peer_port; /* port on the other side */
+ char *peer_name; /* hostname of the other side */
+ char *peer_proc; /* process on the other side */
+} s_xbt_trp_tcp_sock_data_t, *xbt_trp_tcp_sock_data_t;
+
+typedef enum { buffering_buf, buffering_iov } buffering_kind;
+
+typedef struct {
+ int size;
+ char *data;
+ int pos; /* for receive; not exchanged over the net */
+} xbt_trp_buf_t;
+
+struct s_xbt_trp_bufdata {
+ int buffsize;
+ xbt_trp_buf_t in_buf;
+ xbt_trp_buf_t out_buf;
+
+#ifdef HAVE_READV
+ xbt_dynar_t in_buf_v;
+ xbt_dynar_t out_buf_v;
+#endif
+
+ buffering_kind in;
+ buffering_kind out;
+};
+
+/*****************************/
+/****[ SOCKET MANAGEMENT ]****/
+/*****************************/
+
+/* we exchange port number on client side on socket creation,
+ so we need to be able to talk right now. */
+static XBT_INLINE void xbt_trp_tcp_send(xbt_socket_t sock,
+ const char *data,
+ unsigned long int size);
+static int xbt_trp_tcp_recv(xbt_socket_t sock, char *data,
+ unsigned long int size);
+
+static int xbt_trp_tcp_proto_number(void);
+static void xbt_trp_sock_socket_close(xbt_socket_t sock);
+
+static XBT_INLINE
+void xbt_trp_sock_socket_client(xbt_trp_plugin_t ignored,
+ const char *host,
+ int port,
+ /* OUT */ xbt_socket_t sock)
+{
+ xbt_trp_tcp_sock_data_t sockdata = xbt_new(s_xbt_trp_tcp_sock_data_t,1);
+ sockdata->port = port;
+ sockdata->peer_proc = NULL;
+ sockdata->peer_port = port;
+ sockdata->peer_name = (char *) xbt_strdup(host ? host : "localhost");
+ sock->data = sockdata;
+
+ struct sockaddr_in addr;
+ struct hostent *he;
+ struct in_addr *haddr;
+ int size = sock->buf_size;
+ uint32_t myport = htonl(((gras_trp_procdata_t)
+ gras_libdata_by_id
+ (gras_trp_libdata_id))->myport);
+
+ sock->incoming = 1; /* TCP sockets are duplex'ed */
+
+ sock->sd = socket(AF_INET, SOCK_STREAM, 0);
+
+ if (sock->sd < 0) {
+ THROWF(system_error, 0, "Failed to create socket: %s",
+ sock_errstr(sock_errno));
+ }
+
+ if (setsockopt
+ (sock->sd, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof(size))
+ || setsockopt(sock->sd, SOL_SOCKET, SO_SNDBUF, (char *) &size,
+ sizeof(size))) {
+ XBT_VERB("setsockopt failed, cannot set buffer size: %s",
+ sock_errstr(sock_errno));
+ }
+
+ he = gethostbyname(sockdata->peer_name);
+ if (he == NULL) {
+ THROWF(system_error, 0, "Failed to lookup hostname %s: %s",
+ sockdata->peer_name, sock_errstr(sock_errno));
+ }
+
+ haddr = ((struct in_addr *) (he->h_addr_list)[0]);
+
+ memset(&addr, 0, sizeof(struct sockaddr_in));
+ memcpy(&addr.sin_addr, haddr, sizeof(struct in_addr));
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(sockdata->peer_port);
+
+ if (connect(sock->sd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+ tcp_close(sock->sd);
+ THROWF(system_error, 0,
+ "Failed to connect socket to %s:%d (%s)",
+ sockdata->peer_name, sockdata->peer_port, sock_errstr(sock_errno));
+ }
+
+ xbt_trp_tcp_send(sock, (char *) &myport, sizeof(uint32_t));
+ XBT_DEBUG("peerport sent to %d", sockdata->peer_port);
+
+ XBT_VERB("Connect to %s:%d (sd=%d, port %d here)",
+ sockdata->peer_name, sockdata->peer_port, sock->sd, sockdata->port);
+}
+
+/**
+ * gras_trp_sock_socket_server:
+ *
+ * Open a socket used to receive messages.
+ */
+static XBT_INLINE
+void xbt_trp_sock_socket_server(xbt_trp_plugin_t ignored,
+ int port,
+ xbt_socket_t sock)
+{
+ int size = sock->buf_size;
+ int on = 1;
+ struct sockaddr_in server;
+
+ xbt_trp_tcp_sock_data_t sockdata = xbt_new(s_xbt_trp_tcp_sock_data_t,1);
+ sockdata->port = port;
+ sockdata->peer_port = -1;
+ sockdata->peer_name = NULL;
+ sockdata->peer_proc = NULL;
+ sock->data = sockdata;
+
+ sock->outgoing = 1; /* TCP => duplex mode */
+
+ server.sin_port = htons((u_short) sockdata->port);
+ server.sin_addr.s_addr = INADDR_ANY;
+ server.sin_family = AF_INET;
+ if ((sock->sd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ THROWF(system_error, 0, "Socket allocation failed: %s",
+ sock_errstr(sock_errno));
+
+ if (setsockopt
+ (sock->sd, SOL_SOCKET, SO_REUSEADDR, (char *) &on, sizeof(on)))
+ THROWF(system_error, 0,
+ "setsockopt failed, cannot condition the socket: %s",
+ sock_errstr(sock_errno));
+
+ if (setsockopt(sock->sd, SOL_SOCKET, SO_RCVBUF,
+ (char *) &size, sizeof(size))
+ || setsockopt(sock->sd, SOL_SOCKET, SO_SNDBUF,
+ (char *) &size, sizeof(size))) {
+ XBT_VERB("setsockopt failed, cannot set buffer size: %s",
+ sock_errstr(sock_errno));
+ }
+
+ if (bind(sock->sd, (struct sockaddr *) &server, sizeof(server)) == -1) {
+ tcp_close(sock->sd);
+ THROWF(system_error, 0,
+ "Cannot bind to port %d: %s", sockdata->port,
+ sock_errstr(sock_errno));
+ }
+
+ XBT_DEBUG("Listen on port %d (sd=%d)", sockdata->port, sock->sd);
+ if (listen(sock->sd, 5) < 0) {
+ tcp_close(sock->sd);
+ THROWF(system_error, 0,
+ "Cannot listen on port %d: %s",
+ sockdata->port, sock_errstr(sock_errno));
+ }
+
+ XBT_VERB("Openned a server socket on port %d (sd=%d)", sockdata->port,
+ sock->sd);
+}
+
+static xbt_socket_t xbt_trp_sock_socket_accept(xbt_socket_t sock)
+{
+ xbt_socket_t res;
+
+ struct sockaddr_in peer_in;
+ socklen_t peer_in_len = sizeof(peer_in);
+
+ int sd;
+ int tmp_errno;
+ int size;
+
+ int i = 1;
+ socklen_t s = sizeof(int);
+
+ uint32_t hisport;
+
+ int failed = 0;
+
+ XBT_IN("");
+ xbt_socket_new_ext(1, &res, sock->plugin, sock->buf_size, 0);
+
+ sd = accept(sock->sd, (struct sockaddr *) &peer_in, &peer_in_len);
+ tmp_errno = sock_errno;
+
+ if (sd == -1) {
+ xbt_trp_sock_socket_close(sock);
+ THROWF(system_error, 0,
+ "Accept failed (%s). Droping server socket.",
+ sock_errstr(tmp_errno));
+ }
+
+ if (xbt_trp_tcp_proto_number() != -1)
+ if (setsockopt(sd, xbt_trp_tcp_proto_number(), TCP_NODELAY, (char *) &i,s))
+ failed = 1;
+
+ if (setsockopt(sd, SOL_SOCKET, SO_KEEPALIVE, (char *) &i, s))
+ failed = 1;
+
+ if (failed)
+ THROWF(system_error, 0,
+ "setsockopt failed, cannot condition the socket: %s",
+ sock_errstr(tmp_errno));
+
+ size = sock->buf_size;
+ if (setsockopt(sd, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof(size))
+ || setsockopt(sd, SOL_SOCKET, SO_SNDBUF, (char *) &size,
+ sizeof(size)))
+ XBT_VERB("setsockopt failed, cannot set buffer size: %s",
+ sock_errstr(tmp_errno));
+
+ res->plugin = sock->plugin;
+ res->incoming = sock->incoming;
+ res->outgoing = sock->outgoing;
+ res->accepting = 0;
+ res->sd = sd;
+ xbt_trp_tcp_sock_data_t sockdata = xbt_new(s_xbt_trp_tcp_sock_data_t, 1);
+ sockdata->port = -1;
+ res->data = sockdata;
+
+ xbt_trp_tcp_recv(res, (char *) &hisport, sizeof(hisport));
+ sockdata->peer_port = ntohl(hisport);
+ XBT_DEBUG("peerport %d received", sockdata->peer_port);
+
+ /* FIXME: Lock to protect inet_ntoa */
+ if (((struct sockaddr *) &peer_in)->sa_family != AF_INET) {
+ sockdata->peer_name = (char *) strdup("unknown");
+ } else {
+ struct in_addr addrAsInAddr;
+ char *tmp;
+
+ addrAsInAddr.s_addr = peer_in.sin_addr.s_addr;
+
+ tmp = inet_ntoa(addrAsInAddr);
+ if (tmp != NULL) {
+ sockdata->peer_name = (char *) strdup(tmp);
+ } else {
+ sockdata->peer_name = (char *) strdup("unknown");
+ }
+ }
+
+ XBT_VERB("Accepted from %s:%d (sd=%d)", sockdata->peer_name, sockdata->peer_port, sd);
+ xbt_dynar_push(((gras_trp_procdata_t)
+ gras_libdata_by_id(gras_trp_libdata_id))->sockets, &res);
+ /* FIXME we depend on GRAS here */
+
+ XBT_OUT();
+ return res;
+}
+
+static void xbt_trp_sock_socket_close(xbt_socket_t sock)
+{
+ if (!sock)
+ return; /* close only once */
+
+ free(((xbt_trp_tcp_sock_data_t)sock->data)->peer_name);
+ free(sock->data);
+
+ XBT_VERB("close tcp connection %d", sock->sd);
+
+ gras_msg_listener_close_socket(sock->sd); /* FIXME */
+}
+
+/************************************/
+/****[ end of SOCKET MANAGEMENT ]****/
+/************************************/
+
+
+/************************************/
+/****[ UNBUFFERED DATA EXCHANGE ]****/
+/************************************/
+/* Temptation to merge this with file data exchange is great,
+ but doesn't work on BillWare (see tcp_write() in portable.h) */
+static XBT_INLINE void xbt_trp_tcp_send(xbt_socket_t sock,
+ const char *data,
+ unsigned long int size)
+{
+ while (size) {
+ int status = 0;
+
+ status = tcp_write(sock->sd, data, (size_t) size);
+ XBT_DEBUG("write(%d, %p, %ld);", sock->sd, data, size);
+
+ if (status < 0) {
+#ifdef EWOULDBLOCK
+ if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)
+#else
+ if (errno == EINTR || errno == EAGAIN)
+#endif
+ continue;
+
+ THROWF(system_error, 0, "write(%d,%p,%ld) failed: %s",
+ sock->sd, data, size, sock_errstr(sock_errno));
+ }
+
+ if (status) {
+ size -= status;
+ data += status;
+ } else {
+ THROWF(system_error, 0, "file descriptor closed (%s)",
+ sock_errstr(sock_errno));
+ }
+ }
+}
+
+static XBT_INLINE int
+xbt_trp_tcp_recv_withbuffer(xbt_socket_t sock,
+ char *data,
+ unsigned long int size,
+ unsigned long int bufsize)
+{
+ int got = 0;
+
+ if (sock->recvd) {
+ data[0] = sock->recvd_val;
+ sock->recvd = 0;
+ got++;
+ bufsize--;
+ }
+
+ while (size > got) {
+ int status = 0;
+
+ XBT_DEBUG("read(%d, %p, %ld) got %d so far (%s)",
+ sock->sd, data + got, bufsize, got,
+ hexa_str((unsigned char *) data, got, 0));
+ status = tcp_read(sock->sd, data + got, (size_t) bufsize);
+
+ if (status < 0) {
+ THROWF(system_error, 0,
+ "read(%d,%p,%d) from %s:%d failed: %s; got %d so far",
+ sock->sd, data + got, (int) size, xbt_socket_peer_name(sock),
+ xbt_socket_peer_port(sock), sock_errstr(sock_errno), got);
+ }
+ XBT_DEBUG("Got %d more bytes (%s)", status,
+ hexa_str((unsigned char *) data + got, status, 0));
+
+ if (status) {
+ bufsize -= status;
+ got += status;
+ } else {
+ THROWF(system_error, errno,
+ "Socket closed by remote side (got %d bytes before this)",
+ got);
+ }
+ }
+
+ return got;
+}
+
+static int xbt_trp_tcp_recv(xbt_socket_t sock,
+ char *data,
+ unsigned long int size)
+{
+ return xbt_trp_tcp_recv_withbuffer(sock, data, size, size);
+
+}
+
+/*******************************************/
+/****[ end of UNBUFFERED DATA EXCHANGE ]****/
+/*******************************************/
+
+/**********************************/
+/****[ BUFFERED DATA EXCHANGE ]****/
+/**********************************/
+
+/* Make sure the data is sent */
+static void xbt_trp_bufiov_flush(xbt_socket_t sock)
+{
+#ifdef HAVE_READV
+ xbt_dynar_t vect;
+ int size;
+#endif
+ xbt_trp_bufdata_t *data = sock->bufdata;
+ XBT_IN("");
+
+ XBT_DEBUG("Flush");
+ if (data->out == buffering_buf) {
+ if (XBT_LOG_ISENABLED(xbt_trp_tcp, xbt_log_priority_debug))
+ hexa_print("chunk to send ",
+ (unsigned char *) data->out_buf.data, data->out_buf.size);
+ if ((data->out_buf.size - data->out_buf.pos) != 0) {
+ XBT_DEBUG("Send the chunk (size=%d) to %s:%d", data->out_buf.size,
+ xbt_socket_peer_name(sock), xbt_socket_peer_port(sock));
+ xbt_trp_tcp_send(sock, data->out_buf.data, data->out_buf.size);
+ XBT_VERB("Chunk sent (size=%d)", data->out_buf.size);
+ data->out_buf.size = 0;
+ }
+ }
+#ifdef HAVE_READV
+ if (data->out == buffering_iov) {
+ XBT_DEBUG("Flush out iov");
+ vect = sock->bufdata->out_buf_v;
+ if ((size = xbt_dynar_length(vect))) {
+ XBT_DEBUG("Flush %d chunks out of this socket", size);
+ writev(sock->sd, xbt_dynar_get_ptr(vect, 0), size);
+ xbt_dynar_reset(vect);
+ }
+ data->out_buf.size = 0; /* reset the buffer containing non-stable data */
+ }
+
+ if (data->in == buffering_iov) {
+ XBT_DEBUG("Flush in iov");
+ vect = sock->bufdata->in_buf_v;
+ if ((size = xbt_dynar_length(vect))) {
+ XBT_DEBUG("Get %d chunks from of this socket", size);
+ readv(sock->sd, xbt_dynar_get_ptr(vect, 0), size);
+ xbt_dynar_reset(vect);
+ }
+ }
+#endif
+}
+
+static void
+xbt_trp_buf_send(xbt_socket_t sock,
+ const char *chunk,
+ unsigned long int size,
+ int stable_ignored)
+{
+
+ xbt_trp_bufdata_t *data = (xbt_trp_bufdata_t *) sock->bufdata;
+ int chunk_pos = 0;
+
+ XBT_IN("");
+
+ while (chunk_pos < size) {
+ /* size of the chunk to receive in that shot */
+ long int thissize =
+ min(size - chunk_pos, data->buffsize - data->out_buf.size);
+ XBT_DEBUG("Set the chars %d..%ld into the buffer; size=%ld, ctn=(%s)",
+ (int) data->out_buf.size,
+ ((int) data->out_buf.size) + thissize - 1, size,
+ hexa_str((unsigned char *) chunk, thissize, 0));
+
+ memcpy(data->out_buf.data + data->out_buf.size, chunk + chunk_pos,
+ thissize);
+
+ data->out_buf.size += thissize;
+ chunk_pos += thissize;
+ XBT_DEBUG("New pos = %d; Still to send = %ld of %ld; ctn sofar=(%s)",
+ data->out_buf.size, size - chunk_pos, size,
+ hexa_str((unsigned char *) chunk, chunk_pos, 0));
+
+ if (data->out_buf.size == data->buffsize) /* out of space. Flush it */
+ xbt_trp_bufiov_flush(sock);
+ }
+
+ XBT_OUT();
+}
+
+static int
+xbt_trp_buf_recv(xbt_socket_t sock, char *chunk, unsigned long int size)
+{
+
+ xbt_trp_bufdata_t *data = sock->bufdata;
+ long int chunk_pos = 0;
+
+ XBT_IN("");
+
+ while (chunk_pos < size) {
+ /* size of the chunk to receive in that shot */
+ long int thissize;
+
+ if (data->in_buf.size == data->in_buf.pos) { /* out of data. Get more */
+
+ XBT_DEBUG("Get more data (size=%d,bufsize=%d)",
+ (int) MIN(size - chunk_pos, data->buffsize),
+ (int) data->buffsize);
+
+ data->in_buf.size =
+ xbt_trp_tcp_recv_withbuffer(sock, data->in_buf.data,
+ MIN(size - chunk_pos, data->buffsize),
+ data->buffsize);
+
+ data->in_buf.pos = 0;
+ }
+
+ thissize = min(size - chunk_pos, data->in_buf.size - data->in_buf.pos);
+ memcpy(chunk + chunk_pos, data->in_buf.data + data->in_buf.pos,
+ thissize);
+
+ data->in_buf.pos += thissize;
+ chunk_pos += thissize;
+ XBT_DEBUG("New pos = %d; Still to receive = %ld of %ld. Ctn so far=(%s)",
+ data->in_buf.pos, size - chunk_pos, size,
+ hexa_str((unsigned char *) chunk, chunk_pos, 0));
+ }
+ /* indicate on need to the gras_select function that there is more to read on this socket so that it does not actually select */
+ sock->moredata = (data->in_buf.size > data->in_buf.pos);
+ XBT_DEBUG("There is %smore data", (sock->moredata ? "" : "no "));
+
+ XBT_OUT();
+ return chunk_pos;
+}
+
+/*****************************************/
+/****[ end of BUFFERED DATA EXCHANGE ]****/
+/*****************************************/
+
+/********************************/
+/****[ VECTOR DATA EXCHANGE ]****/
+/********************************/
+#ifdef HAVE_READV
+static void
+xbt_trp_iov_send(xbt_socket_t sock,
+ const char *chunk, unsigned long int size, int stable)
+{
+ struct iovec elm;
+ xbt_trp_bufdata_t *data = (xbt_trp_bufdata_t *) sock->bufdata;
+
+
+ XBT_DEBUG("Buffer one chunk to be sent later (%s)",
+ hexa_str((char *) chunk, size, 0));
+
+ elm.iov_len = (size_t) size;
+
+ if (!stable) {
+ /* data storage won't last until flush. Save it in a buffer if we can */
+
+ if (size > data->buffsize - data->out_buf.size) {
+ /* buffer too small:
+ flush the socket, using data in its actual storage */
+ elm.iov_base = (void *) chunk;
+ xbt_dynar_push(data->out_buf_v, &elm);
+
+ xbt_trp_bufiov_flush(sock);
+ return;
+ } else {
+ /* buffer big enough:
+ copy data into it, and chain it for upcoming writev */
+ memcpy(data->out_buf.data + data->out_buf.size, chunk, size);
+ elm.iov_base = (void *) (data->out_buf.data + data->out_buf.size);
+ data->out_buf.size += size;
+
+ xbt_dynar_push(data->out_buf_v, &elm);
+ }
+
+ } else {
+ /* data storage stable. Chain it */
+
+ elm.iov_base = (void *) chunk;
+ xbt_dynar_push(data->out_buf_v, &elm);
+ }
+}
+
+static int
+xbt_trp_iov_recv(gras_socket_t sock, char *chunk, unsigned long int size)
+{
+ struct iovec elm;
+
+ XBT_DEBUG("Buffer one chunk to be received later");
+ elm.iov_base = (void *) chunk;
+ elm.iov_len = (size_t) size;
+ xbt_dynar_push(sock->bufdata->in_buf_v, &elm);
+
+ return size;
+}
+
+#endif
+/***************************************/
+/****[ end of VECTOR DATA EXCHANGE ]****/
+/***************************************/
+
+
+/***
+ *** Prototypes of BUFFERED
+ ***/
+static xbt_socket_t xbt_trp_buf_init_sock(xbt_socket_t sock);
+static void xbt_trp_buf_socket_client(xbt_trp_plugin_t self,
+ const char *host,
+ int port,
+ xbt_socket_t sock);
+static void xbt_trp_buf_socket_server(xbt_trp_plugin_t self,
+ int port,
+ xbt_socket_t sock);
+static xbt_socket_t xbt_trp_buf_socket_accept(xbt_socket_t sock);
+
+static void xbt_trp_buf_socket_close(xbt_socket_t sd);
+
+
+static xbt_socket_t xbt_trp_buf_init_sock(xbt_socket_t sock)
+{
+ xbt_trp_bufdata_t *data = xbt_new(xbt_trp_bufdata_t, 1);
+
+ data->buffsize = 100 * 1024; /* 100k */
+
+ data->in_buf.size = 0;
+ data->in_buf.data = xbt_malloc(data->buffsize);
+ data->in_buf.pos = 0; /* useless, indeed, since size==pos */
+
+ data->out_buf.size = 0;
+ data->out_buf.data = xbt_malloc(data->buffsize);
+ data->out_buf.pos = data->out_buf.size;
+
+#ifdef HAVE_READV
+ data->in_buf_v = data->out_buf_v = NULL;
+ data->in_buf_v = xbt_dynar_new(sizeof(struct iovec), NULL);
+ data->out_buf_v = xbt_dynar_new(sizeof(struct iovec), NULL);
+ data->out = buffering_iov;
+#else
+ data->out = buffering_buf;
+#endif
+
+ data->in = buffering_buf;
+
+ sock->bufdata = data;
+ return sock;
+}
+
+/***
+ *** Info about who's speaking
+ ***/
+static int xbt_trp_tcp_my_port(xbt_socket_t s) {
+ xbt_trp_tcp_sock_data_t sockdata = s->data;
+ return sockdata->port;
+}
+
+static int xbt_trp_tcp_peer_port(xbt_socket_t s) {
+ xbt_trp_tcp_sock_data_t sockdata = s->data;
+ return sockdata->peer_port;
+}
+
+static const char* xbt_trp_tcp_peer_name(xbt_socket_t s) {
+ xbt_trp_tcp_sock_data_t sockdata = s->data;
+ return sockdata->peer_name;
+}
+
+static const char* xbt_trp_tcp_peer_proc(xbt_socket_t s) {
+ xbt_trp_tcp_sock_data_t sockdata = s->data;
+ return sockdata->peer_proc;
+}
+
+static void xbt_trp_tcp_peer_proc_set(xbt_socket_t s,char *name) {
+ xbt_trp_tcp_sock_data_t sockdata = s->data;
+ sockdata->peer_proc = xbt_strdup(name);
+}
+
+/***
+ *** Code
+ ***/
+void xbt_trp_tcp_setup(xbt_trp_plugin_t plug)
+{
+ plug->my_port = xbt_trp_tcp_my_port;
+ plug->peer_port = xbt_trp_tcp_peer_port;
+ plug->peer_name = xbt_trp_tcp_peer_name;
+ plug->peer_proc = xbt_trp_tcp_peer_proc;
+ plug->peer_proc_set = xbt_trp_tcp_peer_proc_set;
+
+
+ plug->socket_client = xbt_trp_buf_socket_client;
+ plug->socket_server = xbt_trp_buf_socket_server;
+ plug->socket_accept = xbt_trp_buf_socket_accept;
+ plug->socket_close = xbt_trp_buf_socket_close;
+
+#ifdef HAVE_READV
+ plug->send = xbt_trp_iov_send;
+#else
+ plug->send = xbt_trp_buf_send;
+#endif
+ plug->recv = xbt_trp_buf_recv;
+
+ plug->raw_send = xbt_trp_tcp_send;
+ plug->raw_recv = xbt_trp_tcp_recv;
+
+ plug->flush = xbt_trp_bufiov_flush;
+
+ plug->data = NULL;
+ plug->exit = NULL;
+}
+
+static void xbt_trp_buf_socket_client(xbt_trp_plugin_t self,
+ const char *host,
+ int port,
+ /* OUT */ xbt_socket_t sock)
+{
+ xbt_trp_sock_socket_client(NULL, host, port, sock);
+ xbt_trp_buf_init_sock(sock);
+}
+
+/**
+ * xbt_trp_buf_socket_server:
+ *
+ * Open a socket used to receive messages.
+ */
+static void xbt_trp_buf_socket_server(xbt_trp_plugin_t self,
+ int port,
+ /* OUT */ xbt_socket_t sock)
+{
+ xbt_trp_sock_socket_server(NULL, port, sock);
+ xbt_trp_buf_init_sock(sock);
+}
+
+static xbt_socket_t xbt_trp_buf_socket_accept(xbt_socket_t sock)
+{
+ return xbt_trp_buf_init_sock(xbt_trp_sock_socket_accept(sock));
+}
+
+static void xbt_trp_buf_socket_close(xbt_socket_t sock)
+{
+ xbt_trp_bufdata_t *data = sock->bufdata;
+
+ if (data->in_buf.size != data->in_buf.pos) {
+ XBT_WARN("Socket closed, but %d bytes were unread (size=%d,pos=%d)",
+ data->in_buf.size - data->in_buf.pos,
+ data->in_buf.size, data->in_buf.pos);
+ }
+ free(data->in_buf.data);
+
+ if (data->out_buf.size != data->out_buf.pos) {
+ XBT_DEBUG("Flush the socket before closing (in=%d,out=%d)",
+ data->in_buf.size, data->out_buf.size);
+ xbt_trp_bufiov_flush(sock);
+ }
+ free(data->out_buf.data);
+
+#ifdef HAVE_READV
+ if (data->in_buf_v) {
+ if (!xbt_dynar_is_empty(data->in_buf_v))
+ XBT_WARN("Socket closed, but some bytes were unread");
+ xbt_dynar_free(&data->in_buf_v);
+ }
+ if (data->out_buf_v) {
+ if (!xbt_dynar_is_empty(data->out_buf_v)) {
+ XBT_DEBUG("Flush the socket before closing");
+ xbt_trp_bufiov_flush(sock);
+ }
+ xbt_dynar_free(&data->out_buf_v);
+ }
+#endif
+
+ free(data);
+ xbt_trp_sock_socket_close(sock);
+}
+
+/****************************/
+/****[ HELPER FUNCTIONS ]****/
+/****************************/
+
+/*
+ * Returns the tcp protocol number from the network protocol data base, or -1 if not found
+ *
+ * getprotobyname() is not thread safe. We need to lock it.
+ */
+static int xbt_trp_tcp_proto_number(void)
+{
+ struct protoent *fetchedEntry;
+ static int returnValue = 0;
+
+ if (returnValue == 0) {
+ fetchedEntry = getprotobyname("tcp");
+ if (fetchedEntry == NULL) {
+ XBT_VERB("getprotobyname(tcp) gave NULL");
+ returnValue = -1;
+ } else {
+ returnValue = fetchedEntry->p_proto;
+ }
+ }
+
+ return returnValue;
+}
+
+#ifdef HAVE_WINSOCK_H
+#define RETSTR( x ) case x: return #x
+
+const char *xbt_wsa_err2string(int err)
+{
+ switch (err) {
+ RETSTR(WSAEINTR);
+ RETSTR(WSAEBADF);
+ RETSTR(WSAEACCES);
+ RETSTR(WSAEFAULT);
+ RETSTR(WSAEINVAL);
+ RETSTR(WSAEMFILE);
+ RETSTR(WSAEWOULDBLOCK);
+ RETSTR(WSAEINPROGRESS);
+ RETSTR(WSAEALREADY);
+ RETSTR(WSAENOTSOCK);
+ RETSTR(WSAEDESTADDRREQ);
+ RETSTR(WSAEMSGSIZE);
+ RETSTR(WSAEPROTOTYPE);
+ RETSTR(WSAENOPROTOOPT);
+ RETSTR(WSAEPROTONOSUPPORT);
+ RETSTR(WSAESOCKTNOSUPPORT);
+ RETSTR(WSAEOPNOTSUPP);
+ RETSTR(WSAEPFNOSUPPORT);
+ RETSTR(WSAEAFNOSUPPORT);
+ RETSTR(WSAEADDRINUSE);
+ RETSTR(WSAEADDRNOTAVAIL);
+ RETSTR(WSAENETDOWN);
+ RETSTR(WSAENETUNREACH);
+ RETSTR(WSAENETRESET);
+ RETSTR(WSAECONNABORTED);
+ RETSTR(WSAECONNRESET);
+ RETSTR(WSAENOBUFS);
+ RETSTR(WSAEISCONN);
+ RETSTR(WSAENOTCONN);
+ RETSTR(WSAESHUTDOWN);
+ RETSTR(WSAETOOMANYREFS);
+ RETSTR(WSAETIMEDOUT);
+ RETSTR(WSAECONNREFUSED);
+ RETSTR(WSAELOOP);
+ RETSTR(WSAENAMETOOLONG);
+ RETSTR(WSAEHOSTDOWN);
+ RETSTR(WSAEHOSTUNREACH);
+ RETSTR(WSAENOTEMPTY);
+ RETSTR(WSAEPROCLIM);
+ RETSTR(WSAEUSERS);
+ RETSTR(WSAEDQUOT);
+ RETSTR(WSAESTALE);
+ RETSTR(WSAEREMOTE);
+ RETSTR(WSASYSNOTREADY);
+ RETSTR(WSAVERNOTSUPPORTED);
+ RETSTR(WSANOTINITIALISED);
+ RETSTR(WSAEDISCON);
+
+#ifdef HAVE_WINSOCK2
+ RETSTR(WSAENOMORE);
+ RETSTR(WSAECANCELLED);
+ RETSTR(WSAEINVALIDPROCTABLE);
+ RETSTR(WSAEINVALIDPROVIDER);
+ RETSTR(WSASYSCALLFAILURE);
+ RETSTR(WSASERVICE_NOT_FOUND);
+ RETSTR(WSATYPE_NOT_FOUND);
+ RETSTR(WSA_E_NO_MORE);
+ RETSTR(WSA_E_CANCELLED);
+ RETSTR(WSAEREFUSED);
+#endif /* HAVE_WINSOCK2 */
+
+ RETSTR(WSAHOST_NOT_FOUND);
+ RETSTR(WSATRY_AGAIN);
+ RETSTR(WSANO_RECOVERY);
+ RETSTR(WSANO_DATA);
+ }
+ return "unknown WSA error";
+}
+#endif /* HAVE_WINSOCK_H */
+
+/***********************************/
+/****[ end of HELPER FUNCTIONS ]****/
+/***********************************/