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@@ -0,0 +1,152 @@
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+/* <!-- copyright */
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+/*
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+ * aria2 - a simple utility for downloading files faster
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+ *
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+ * Copyright (C) 2006 Tatsuhiro Tsujikawa
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program; if not, write to the Free Software
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+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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+ */
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+/* copyright --> */
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+#include "SocketCore.h"
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+#include <unistd.h>
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+#include <fcntl.h>
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+#include <netdb.h>
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+#include <sys/types.h>
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+#include <sys/socket.h>
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+#include <netinet/in.h>
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+#include <arpa/inet.h>
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+#include <sys/time.h>
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+#include <netdb.h>
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+#include "DlRetryEx.h"
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+#include "DlAbortEx.h"
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+#include <errno.h>
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+
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+SocketCore::SocketCore():sockfd(-1), use(1) {}
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+
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+SocketCore::~SocketCore() {
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+ closeConnection();
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+}
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+
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+void SocketCore::establishConnection(string host, int port) {
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+ sockfd = socket(AF_INET, SOCK_STREAM, 0);
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+ if(sockfd >= 0) {
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+ socklen_t sockopt = 1;
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+ if(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &sockopt, sizeof(int)) < 0) {
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+ close(sockfd);
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+ sockfd = -1;
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+ throw new DlAbortEx(strerror(errno));
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+ }
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+ } else {
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+ throw new DlAbortEx(strerror(errno));
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+ }
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+
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+ struct sockaddr_in sockaddr;
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+ memset((char*)&sockaddr, 0, sizeof(sockaddr));
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+ sockaddr.sin_family = AF_INET;
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+ sockaddr.sin_port = htons(port);
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+ if(inet_aton(host.c_str(), &sockaddr.sin_addr)) {
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+ // ok
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+ } else {
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+ struct addrinfo ai;
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+ ai.ai_flags = 0;
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+ ai.ai_family = PF_INET;
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+ ai.ai_socktype = SOCK_STREAM;
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+ ai.ai_protocol = 0;
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+ ai.ai_addr = (struct sockaddr*)&sockaddr;
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+ struct addrinfo* res;
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+ int ec;
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+ if((ec = getaddrinfo(host.c_str(), NULL, &ai, &res)) != 0) {
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+ throw new DlAbortEx(gai_strerror(ec));
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+ }
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+ sockaddr.sin_addr = ((struct sockaddr_in*)res->ai_addr)->sin_addr;
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+ freeaddrinfo(res);
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+ }
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+ // make socket non-blocking mode
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+ int flags = fcntl(sockfd, F_GETFL, 0);
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+ fcntl(sockfd, F_SETFL, flags|O_NONBLOCK);
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+ if(connect(sockfd, (struct sockaddr*)&sockaddr, (socklen_t)sizeof(sockaddr)) == -1 && errno != EINPROGRESS) {
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+ throw new DlAbortEx(strerror(errno));
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+ }
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+}
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+
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+void SocketCore::setNonBlockingMode() {
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+ int flags = fcntl(sockfd, F_GETFL, 0);
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+ fcntl(sockfd, F_SETFL, flags&~O_NONBLOCK);
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+}
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+
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+void SocketCore::closeConnection() {
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+ if(sockfd != -1) {
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+ close(sockfd);
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+ sockfd = -1;
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+ }
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+}
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+
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+bool SocketCore::isWritable(int timeout) {
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+ fd_set fds;
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+ FD_ZERO(&fds);
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+ FD_SET(sockfd, &fds);
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+
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+ struct timeval tv;
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+ tv.tv_sec = timeout;
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+ tv.tv_usec = 0;
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+
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+ int r = select(sockfd+1, NULL, &fds, NULL, &tv);
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+ if(r == 1) {
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+ return true;
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+ } else if(r == 0) {
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+ // time out
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+ return false;
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+ } else {
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+ throw new DlRetryEx(strerror(errno));
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+ }
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+}
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+
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+bool SocketCore::isReadable(int timeout) {
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+ fd_set fds;
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+ FD_ZERO(&fds);
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+ FD_SET(sockfd, &fds);
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+
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+ struct timeval tv;
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+ tv.tv_sec = timeout;
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+ tv.tv_usec = 0;
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+
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+ int r = select(sockfd+1, &fds, NULL, NULL, &tv);
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+ if(r == 1) {
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+ return true;
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+ } else if(r == 0) {
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+ // time out
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+ return false;
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+ } else {
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+ throw new DlRetryEx(strerror(errno));
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+ }
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+}
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+
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+void SocketCore::writeData(const char* data, int len, int timeout) {
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+ if(!isWritable(timeout) || send(sockfd, data, (size_t)len, 0) != len) {
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+ throw new DlRetryEx(strerror(errno));
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+ }
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+}
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+
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+void SocketCore::readData(char* data, int& len, int timeout) {
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+ if(!isReadable(timeout) || (len = recv(sockfd, data, (size_t)len, 0)) < 0) {
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+ throw new DlRetryEx(strerror(errno));
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+ }
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+}
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+
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+void SocketCore::peekData(char* data, int& len, int timeout) {
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+ if(!isReadable(timeout) || (len = recv(sockfd, data, (size_t)len, MSG_PEEK)) < 0) {
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+ throw new DlRetryEx(strerror(errno));
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+ }
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+}
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Tatsuhiro Tsujikawa