82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
#include <stdio.h>
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#include <unistd.h>
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#include "muduo/base/Logging.h"
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#include "muduo/net/EventLoop.h"
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#include "muduo/net/TcpServer.h"
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using namespace muduo;
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using namespace muduo::net;
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void onHighWaterMark(const TcpConnectionPtr& conn, size_t len)
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{
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LOG_INFO << "HighWaterMark " << len;
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}
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const int kBufSize = 64 * 1024;
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const char* g_file = NULL;
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void onConnection(const TcpConnectionPtr& conn)
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{
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LOG_INFO << "FileServer - " << conn->peerAddress().toIpPort() << " -> "
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<< conn->localAddress().toIpPort() << " is "
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<< (conn->connected() ? "UP" : "DOWN");
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if (conn->connected()) {
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LOG_INFO << "FileServer - Sending file " << g_file << " to "
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<< conn->peerAddress().toIpPort();
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conn->setHighWaterMarkCallback(onHighWaterMark, kBufSize + 1);
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FILE* fp = ::fopen(g_file, "rb");
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if (fp) {
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conn->setContext(fp);
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char buf[kBufSize];
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size_t nread = ::fread(buf, 1, sizeof buf, fp);
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conn->send(buf, static_cast<int>(nread));
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} else {
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conn->shutdown();
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LOG_INFO << "FileServer - no such file";
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}
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} else {
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if (!conn->getContext().empty()) {
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FILE* fp = boost::any_cast<FILE*>(conn->getContext());
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if (fp) {
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::fclose(fp);
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}
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}
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}
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}
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void onWriteComplete(const TcpConnectionPtr& conn)
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{
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FILE* fp = boost::any_cast<FILE*>(conn->getContext());
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char buf[kBufSize];
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size_t nread = ::fread(buf, 1, sizeof buf, fp);
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if (nread > 0) {
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conn->send(buf, static_cast<int>(nread));
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} else {
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::fclose(fp);
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fp = NULL;
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conn->setContext(fp);
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conn->shutdown();
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LOG_INFO << "FileServer - done";
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}
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}
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int main(int argc, char* argv[])
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{
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LOG_INFO << "pid = " << getpid();
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if (argc > 1) {
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g_file = argv[1];
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EventLoop loop;
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InetAddress listenAddr(2021);
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TcpServer server(&loop, listenAddr, "FileServer");
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server.setConnectionCallback(onConnection);
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server.setWriteCompleteCallback(onWriteComplete);
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server.start();
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loop.loop();
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} else {
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fprintf(stderr, "Usage: %s file_for_downloading\n", argv[0]);
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}
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}
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