40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
#include <arpa/inet.h>
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#include <gflags/gflags.h>
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#include <glog/logging.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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DEFINE_int32(port, 9000, "TCP port to bind");
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int main(int argc, char *argv[]) {
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google::InitGoogleLogging(argv[0]);
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gflags::ParseCommandLineFlags(&argc, &argv, true);
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auto listen_sock = socket(AF_INET6, SOCK_STREAM, 0);
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PCHECK(listen_sock >= 0) << "socket()";
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sockaddr_in6 bind_addr = {
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.sin6_family = AF_INET6,
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.sin6_port = htons(FLAGS_port),
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.sin6_addr = IN6ADDR_LOOPBACK_INIT,
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};
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PCHECK(bind(listen_sock, (sockaddr*) &bind_addr, sizeof(bind_addr)) == 0);
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PCHECK(listen(listen_sock, 128) == 0);
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while (true) {
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sockaddr_in6 client_addr;
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socklen_t client_addr_len = sizeof(client_addr);
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auto sock = accept(listen_sock, (sockaddr*) &client_addr, &client_addr_len);
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PCHECK(sock >= 0) << "accept()";
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CHECK_EQ(client_addr.sin6_family, AF_INET6);
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char client_addr_str[INET6_ADDRSTRLEN];
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PCHECK(inet_ntop(AF_INET6, &client_addr.sin6_addr, client_addr_str, sizeof(client_addr_str)));
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LOG(INFO) << "new connection: [" << client_addr_str << "]:" << ntohs(client_addr.sin6_port);
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}
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}
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