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add run_server and threading so both client and server are in same program

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This commit is contained in:
Krzosa Karol
2026-01-27 21:19:42 +01:00
parent d1304b64d4
commit d62bebee78
2 changed files with 147 additions and 55 deletions
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15
src/basic.cpp
View File

@@ -1,9 +1,8 @@
#define lengthof(x) (sizeof((x)) / sizeof((x)[0]))
#define panicf(...) (fprintf(stderr, "%s:%d: ", __FILE__, __LINE__), fprintf(stderr, __VA_ARGS__), fprintf(stderr, "\n"), exit(1))
#define debugf(...) (printf("%s:%d: ", __FILE__, __LINE__), printf(__VA_ARGS__), printf("\n"))
#define panicf(...) (fprintf(stderr, "%s:%d: %s\n", __FILE__, __LINE__, strf(__VA_ARGS__)), exit(1))
#define debugf(...) printf("%s:%d: %s\n", __FILE__, __LINE__, strf(__VA_ARGS__))
#define assert(x) ((!(x)) && (panicf("%s:%d: assertion failed " #x, __FILE__, __LINE__), 0))
template <typename T>
struct DEFER_ExitScope {
T lambda;
@@ -46,22 +45,22 @@ struct Slice {
};
#define PLEN(x) {(x), lengthof(x)}
#define ENUM_VALUE(x) {x, #x}
struct EnumValue {
struct Enum_Value {
int value;
const char *name;
};
#define ENUM_VALUE(x) {x, #x}
const char *serialize(Slice<EnumValue> table, int value) {
const char *serialize(Slice<Enum_Value> table, int value) {
for (int i = 0; i < table.len; i += 1) {
EnumValue *it = table.data + i;
Enum_Value *it = table.data + i;
if (it->value == value) return it->name;
}
return "";
}
char *serialize_flags(Slice<EnumValue> table, int n) { // @leak
char *serialize_flags(Slice<Enum_Value> table, int n) { // @leak
char *result = strf("%d", n);
for (int i = 0; i < table.len; i += 1) {
auto *it = table.data + i;

187
src/main.cpp
View File

@@ -14,6 +14,39 @@
#pragma comment(lib, "ws2_32")
#include "basic.cpp"
Enum_Value _ai_flags_table[] = {
ENUM_VALUE(AI_PASSIVE),
ENUM_VALUE(AI_CANONNAME),
ENUM_VALUE(AI_NUMERICHOST),
};
Slice<Enum_Value> ai_flags_table = PLEN(_ai_flags_table);
Enum_Value _ai_family_table[] = {
{0, "AF_UNSPEC"},
{2, "AF_INET"},
{17, "AF_NETBIOS"},
{23, "AF_INET6"},
{26, "AF_IRDA"},
{32, "AF_BTH"},
};
Slice<Enum_Value> ai_family_table = PLEN(_ai_family_table);
Enum_Value _ai_socktype_table[] = {
ENUM_VALUE(SOCK_STREAM),
ENUM_VALUE(SOCK_DGRAM),
ENUM_VALUE(SOCK_RAW),
ENUM_VALUE(SOCK_RDM),
ENUM_VALUE(SOCK_SEQPACKET),
};
Slice<Enum_Value> ai_socktype_table = PLEN(_ai_socktype_table);
Enum_Value _ai_protocol_table[] = {
ENUM_VALUE(IPPROTO_TCP),
ENUM_VALUE(IPPROTO_UDP),
ENUM_VALUE(IPPROTO_PGM),
};
Slice<Enum_Value> ai_protocol_table = PLEN(_ai_protocol_table);
char *serialize_error_code(DWORD errorCode) {
char* message = NULL;
@@ -37,39 +70,6 @@ char *serialize_error_code(DWORD errorCode) {
return message; // @leak - LocalFree
}
EnumValue _ai_flags_table[] = {
ENUM_VALUE(AI_PASSIVE),
ENUM_VALUE(AI_CANONNAME),
ENUM_VALUE(AI_NUMERICHOST),
};
Slice<EnumValue> ai_flags_table = PLEN(_ai_flags_table);
EnumValue _ai_family_table[] = {
{0, "AF_UNSPEC"},
{2, "AF_INET"},
{17, "AF_NETBIOS"},
{23, "AF_INET6"},
{26, "AF_IRDA"},
{32, "AF_BTH"},
};
Slice<EnumValue> ai_family_table = PLEN(_ai_family_table);
EnumValue _ai_socktype_table[] = {
ENUM_VALUE(SOCK_STREAM),
ENUM_VALUE(SOCK_DGRAM),
ENUM_VALUE(SOCK_RAW),
ENUM_VALUE(SOCK_RDM),
ENUM_VALUE(SOCK_SEQPACKET),
};
Slice<EnumValue> ai_socktype_table = PLEN(_ai_socktype_table);
EnumValue _ai_protocol_table[] = {
ENUM_VALUE(IPPROTO_TCP),
ENUM_VALUE(IPPROTO_UDP),
ENUM_VALUE(IPPROTO_PGM),
};
Slice<EnumValue> ai_protocol_table = PLEN(_ai_protocol_table);
void serialize_addrinfo(struct addrinfo* in) {
for (struct addrinfo* p = in; p != NULL; p = p->ai_next) {
printf("addrinfo %p {\n", p);
@@ -103,18 +103,6 @@ void serialize_addrinfo(struct addrinfo* in) {
#define PORT "8000"
void run_server() {
WSADATA wsaData;
int err_wsa_startup = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (err_wsa_startup != 0) {
panicf("WSAStartup failed, error code: %d", err_wsa_startup);
}
defer { WSACleanup(); };
if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) {
panicf("Version 2.2 of Winsock not available");
}
struct addrinfo *servinfo = {};
struct addrinfo hints = {};
hints.ai_family = AF_UNSPEC;
@@ -126,7 +114,7 @@ void run_server() {
panicf("getaddrinfo failed, error code: %s\n", gai_strerrorA(err));
}
defer { freeaddrinfo(servinfo); };
serialize_addrinfo(servinfo);
// serialize_addrinfo(servinfo);
SOCKET socket_fd = -1;
for (addrinfo *it = servinfo; it; it = it->ai_next) {
@@ -186,8 +174,113 @@ void run_server() {
}
}
int main() {
void *get_in_addr(struct sockaddr *sa)
{
if (sa->sa_family == AF_INET) {
return &(((struct sockaddr_in*)sa)->sin_addr);
}
return &(((struct sockaddr_in6*)sa)->sin6_addr);
}
void run_client() {
struct addrinfo *servinfo = {};
struct addrinfo hints = {};
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM; // tcp
// hints.ai_flags = AI_PASSIVE;
// hints.ai_protocol = IPROTO_TCP; // tcp
INT err = getaddrinfo(NULL, PORT, &hints, &servinfo);
if (err != 0) {
panicf("client: getaddrinfo failed, error code: %s\n", gai_strerrorA(err));
}
defer { freeaddrinfo(servinfo); };
// serialize_addrinfo(servinfo);
SOCKET socket_fd = -1;
for (addrinfo *it = servinfo; it; it = it->ai_next) {
socket_fd = socket(it->ai_family, it->ai_socktype, it->ai_protocol);
if (socket_fd == -1) {
debugf("skipping socket call %s", serialize_error_code(WSAGetLastError()));
continue;
}
char s[INET6_ADDRSTRLEN];
inet_ntop(it->ai_family, get_in_addr(it->ai_addr), s, sizeof(s));
debugf("client: attempting connection to: %s", s);
if (connect(socket_fd, it->ai_addr, (int)it->ai_addrlen) != 0) {
debugf("client: failed to connect %s", serialize_error_code(WSAGetLastError()));
closesocket(socket_fd);
socket_fd = -1;
continue;
}
break;
}
if (socket_fd == -1) {
panicf("client: failed to connect");
} else {
debugf("client: connected!");
}
char buf[1024];
int numbytes = recv(socket_fd, buf, lengthof(buf) - 1, 0);
if (numbytes == -1) {
panicf("client: recv failed %s", serialize_error_code(WSAGetLastError()));
}
buf[numbytes] = '\0';
debugf("client: received '%s'",buf);
closesocket(socket_fd);
}
struct Thread_Data {
int idx;
};
DWORD thread_entry(LPVOID param) {
Thread_Data *thread_data = (Thread_Data *)param;
printf("thread %d, reporting in!\n", thread_data->idx);
if (thread_data->idx == 0) {
run_server();
} else {
run_client();
}
printf("thread %d, exiting...\n", thread_data->idx);
return 0;
}
int main() {
WSADATA wsaData;
int err_wsa_startup = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (err_wsa_startup != 0) {
panicf("WSAStartup failed, error code: %d", err_wsa_startup);
}
defer { WSACleanup(); };
if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) {
panicf("Version 2.2 of Winsock not available");
}
constexpr int thread_count = 8;
HANDLE thread_handles[32];
Thread_Data thread_data[32];
DWORD thread_ids[32];
static_assert(thread_count < lengthof(thread_ids));
for (int i = 0; i < thread_count; i += 1) {
thread_data[i].idx = i;
LPSECURITY_ATTRIBUTES attribs = NULL;
SIZE_T stack_size = 0;
DWORD creation_flags = 0;
thread_handles[i] = CreateThread(attribs, stack_size, thread_entry, &thread_data[i], creation_flags, &thread_ids[i]);
}
WaitForMultipleObjects(thread_count, thread_handles, TRUE, INFINITE);
// run_server();
debugf("exiting...");
return 0;
}