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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/vespalib/net/socket_spec.h>
#include <vespa/vespalib/net/server_socket.h>
#include <vespa/vespalib/net/socket.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <thread>
#include <functional>
#include <chrono>
using namespace vespalib;
bool is_socket(const vespalib::string &path) {
struct stat info;
if (path.empty() || (lstat(path.c_str(), &info) != 0)) {
return false;
}
return S_ISSOCK(info.st_mode);
}
bool is_file(const vespalib::string &path) {
struct stat info;
if (path.empty() || (lstat(path.c_str(), &info) != 0)) {
return false;
}
return S_ISREG(info.st_mode);
}
void remove_file(const vespalib::string &path) {
unlink(path.c_str());
}
void replace_file(const vespalib::string &path, const vespalib::string &data) {
remove_file(path);
int fd = creat(path.c_str(), 0600);
ASSERT_NOT_EQUAL(fd, -1);
ASSERT_EQUAL(write(fd, data.data(), data.size()), data.size());
close(fd);
}
vespalib::string get_meta(const SocketAddress &addr) {
vespalib::string meta;
if (addr.is_ipv4()) {
meta = "ipv4";
} else if (addr.is_ipv6()) {
meta = "ipv6";
} else if (addr.is_ipc()) {
meta = "ipc";
} else {
meta = "???";
}
if (addr.is_wildcard()) {
meta += " wildcard";
}
return meta;
}
vespalib::string read_bytes(Socket &socket, size_t wanted_bytes) {
char tmp[64];
vespalib::string result;
while (result.size() < wanted_bytes) {
size_t read_size = std::min(sizeof(tmp), wanted_bytes - result.size());
ssize_t read_result = socket.read(tmp, read_size);
if (read_result <= 0) {
return result;
}
result.append(tmp, read_result);
}
return result;
}
void verify_socket_io(bool is_server, Socket &socket) {
vespalib::string server_message = "hello, this is the server speaking";
vespalib::string client_message = "please pick up, I need to talk to you";
if(is_server) {
ssize_t written = socket.write(server_message.data(), server_message.size());
EXPECT_EQUAL(written, server_message.size());
vespalib::string read = read_bytes(socket, client_message.size());
EXPECT_EQUAL(client_message, read);
} else {
ssize_t written = socket.write(client_message.data(), client_message.size());
EXPECT_EQUAL(written, client_message.size());
vespalib::string read = read_bytes(socket, server_message.size());
EXPECT_EQUAL(server_message, read);
}
}
Socket::UP connect_sockets(bool is_server, ServerSocket &server_socket) {
if (is_server) {
return server_socket.accept();
} else {
auto server = server_socket.address();
auto spec = server.spec();
auto client = SocketSpec(spec).client_address();
fprintf(stderr, "connecting to '%s' (server: %s) (client: %s)\n",
spec.c_str(), get_meta(server).c_str(), get_meta(client).c_str());
return Socket::connect(SocketSpec(spec));
}
}
//-----------------------------------------------------------------------------
TEST("my local address") {
auto list = SocketAddress::resolve(4080);
fprintf(stderr, "resolve(4080):\n");
for (const auto &addr: list) {
EXPECT_TRUE(addr.is_wildcard());
EXPECT_EQUAL(addr.port(), 4080);
fprintf(stderr, " %s (%s)\n", addr.spec().c_str(), get_meta(addr).c_str());
}
}
TEST("yahoo.com address") {
auto list = SocketAddress::resolve(80, "yahoo.com");
fprintf(stderr, "resolve(80, 'yahoo.com'):\n");
for (const auto &addr: list) {
EXPECT_TRUE(!addr.is_wildcard());
EXPECT_EQUAL(addr.port(), 80);
fprintf(stderr, " %s (%s)\n", addr.spec().c_str(), get_meta(addr).c_str());
}
}
TEST("ipc address") {
auto addr = SocketAddress::from_path("my_socket");
EXPECT_TRUE(addr.is_ipc());
EXPECT_TRUE(!addr.is_wildcard());
EXPECT_EQUAL(addr.port(), -1);
EXPECT_EQUAL(vespalib::string("my_socket"), addr.path());
fprintf(stderr, "from_path(my_socket)\n");
fprintf(stderr, " %s (%s)\n", addr.spec().c_str(), get_meta(addr).c_str());
}
TEST("local client/server addresses") {
auto spec = SocketSpec("tcp/123");
auto client = spec.client_address();
auto server = spec.server_address();
EXPECT_TRUE(!client.is_wildcard());
EXPECT_EQUAL(client.port(), 123);
EXPECT_TRUE(server.is_wildcard());
EXPECT_EQUAL(server.port(), 123);
fprintf(stderr, "client(tcp/123): %s (%s)\n", client.spec().c_str(), get_meta(client).c_str());
fprintf(stderr, "server(tcp/123): %s (%s)\n", server.spec().c_str(), get_meta(server).c_str());
}
struct ServerWrapper {
ServerSocket::UP server;
ServerWrapper(const vespalib::string &spec) : server(ServerSocket::listen(SocketSpec(spec))) {}
};
TEST_MT_F("require that basic socket io works", 2, ServerWrapper("tcp/0")) {
bool is_server = (thread_id == 0);
Socket::UP socket = connect_sockets(is_server, *f1.server);
TEST_DO(verify_socket_io(is_server, *socket));
}
TEST_MT_F("require that basic unix domain socket io works", 2, ServerWrapper("ipc/file:my_socket")) {
bool is_server = (thread_id == 0);
Socket::UP socket = connect_sockets(is_server, *f1.server);
TEST_DO(verify_socket_io(is_server, *socket));
}
TEST_MT_F("require that server accept can be interrupted", 2, ServerWrapper("tcp/0")) {
bool is_server = (thread_id == 0);
if (is_server) {
fprintf(stderr, "--> calling accept\n");
Socket::UP socket = f1.server->accept();
fprintf(stderr, "<-- accept returned\n");
EXPECT_TRUE(!socket->valid());
} else {
std::this_thread::sleep_for(std::chrono::milliseconds(500));
fprintf(stderr, "--- closing server socket\n");
f1.server->shutdown();
}
}
TEST("require that socket file is removed by server socket when destructed") {
remove_file("my_socket");
ServerSocket::UP server = ServerSocket::listen(SocketSpec("ipc/file:my_socket"));
EXPECT_TRUE(server->valid());
EXPECT_TRUE(is_socket("my_socket"));
server.reset();
EXPECT_TRUE(!is_socket("my_socket"));
}
TEST("require that socket file is only removed on destruction if it is a socket") {
remove_file("my_socket");
ServerSocket::UP server = ServerSocket::listen(SocketSpec("ipc/file:my_socket"));
EXPECT_TRUE(server->valid());
EXPECT_TRUE(is_socket("my_socket"));
replace_file("my_socket", "hello\n");
server.reset();
EXPECT_TRUE(is_file("my_socket"));
remove_file("my_socket");
}
TEST("require that a server socket will fail to listen to a path that is already a regular file") {
replace_file("my_socket", "hello\n");
ServerSocket::UP server = ServerSocket::listen(SocketSpec("ipc/file:my_socket"));
EXPECT_TRUE(!server->valid());
server.reset();
EXPECT_TRUE(is_file("my_socket"));
remove_file("my_socket");
}
TEST("require that a server socket will fail to listen to a path that is already taken by another server") {
remove_file("my_socket");
ServerSocket::UP server1 = ServerSocket::listen(SocketSpec("ipc/file:my_socket"));
ServerSocket::UP server2 = ServerSocket::listen(SocketSpec("ipc/file:my_socket"));
EXPECT_TRUE(server1->valid());
EXPECT_TRUE(!server2->valid());
EXPECT_TRUE(is_socket("my_socket"));
server1.reset();
EXPECT_TRUE(!is_socket("my_socket"));
}
TEST("require that a server socket will remove an old socket file if it cannot be connected to") {
remove_file("my_socket");
{
SocketHandle server_handle = SocketAddress::from_path("my_socket").listen();
EXPECT_TRUE(is_socket("my_socket"));
}
EXPECT_TRUE(is_socket("my_socket"));
ServerSocket::UP server = ServerSocket::listen(SocketSpec("ipc/file:my_socket"));
EXPECT_TRUE(server->valid());
server.reset();
EXPECT_TRUE(!is_socket("my_socket"));
}
TEST_MAIN() { TEST_RUN_ALL(); }
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