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start of refactoring + ipv6

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This commit is contained in:
Arthur-Coppey 2021-10-30 08:08:32 +02:00
parent 010c9286eb
commit 39c157b271
2 changed files with 51 additions and 19 deletions
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64
server/server.c
View File

@ -10,23 +10,60 @@
extern int errno; extern int errno;
unsigned long addressLength = sizeof(struct sockaddr_in); unsigned long addressLength = sizeof(struct sockaddr_in);
void tcpServer() {
int serverSocket, clientSocket;
long recvLen; long recvLen;
// unsigned long addressLength = sizeof(struct sockaddr_in); int sock, serverSocket, clientSocket, socketType, socketProtocol;
struct sockaddr_in serverAddress, clientAddress; struct sockaddr_in serverAddress, clientAddress;
struct sockaddr_in serverAddress4, clientAddress4;
struct sockaddr_in6 serverAddress6, clientAddress6;
char quote[MESSAGE_STRING_LENGTH] = ""; char quote[MESSAGE_STRING_LENGTH] = "";
char clientMessage[MESSAGE_STRING_LENGTH] = ""; char clientMessage[MESSAGE_STRING_LENGTH] = "";
void server(int tcp, int ipv6) {
// TODO: things common between tcp/udp here
// init sock info
memset(&serverAddress, 0, addressLength);
memset(&clientAddress, 0, addressLength);
if (ipv6) {
serverAddress6.sin6_family = AF_INET6;
serverAddress6.sin6_addr = in6addr_any;
serverAddress6.sin6_port = htons(17);
} else {
serverAddress.sin_family = AF_INET;
serverAddress.sin_addr.s_addr = INADDR_ANY;
serverAddress.sin_port = htons(17);
}
// create sock
if (tcp) {
socketType = SOCK_STREAM;
socketProtocol = IPPROTO_TCP;
} else {
socketType = SOCK_DGRAM;
socketProtocol = IPPROTO_UDP;
}
serverSocket = socket(serverAddress.sin_family, socketType, socketProtocol);
if (serverSocket == -1) {
puts("socket not created");
exit(1);
}
puts("socket created");
// bind sock
}
void tcpServer() {
/*initialize socket info*/ /*initialize socket info*/
memset(&serverAddress, 0, addressLength);
memset(&clientAddress, 0, addressLength);
serverAddress.sin_family = AF_INET; serverAddress.sin_family = AF_INET;
serverAddress.sin_addr.s_addr = INADDR_ANY; serverAddress.sin_addr.s_addr = INADDR_ANY;
serverAddress.sin_port = htons(17); serverAddress.sin_port = htons(17);
/*create socket*/ /*create socket*/
serverSocket = socket(serverAddress.sin_family, SOCK_STREAM, IPPROTO_IP); serverSocket = socket(serverAddress.sin_family, SOCK_STREAM, IPPROTO_TCP);
if (serverSocket == -1) { if (serverSocket == -1) {
puts("socket not created"); puts("socket not created");
exit(1); exit(1);
@ -74,12 +111,6 @@ void tcpServer() {
} }
_Noreturn void udpServer() { _Noreturn void udpServer() {
int sock;
// unsigned long addressLength = sizeof(struct sockaddr_in);
struct sockaddr_in serverAddress, clientAddress;
char quote[MESSAGE_STRING_LENGTH] = "";
char clientMessage[MESSAGE_STRING_LENGTH] = "";
/*initialize sock info*/ /*initialize sock info*/
memset(&serverAddress, 0, addressLength); memset(&serverAddress, 0, addressLength);
memset(&clientAddress, 0, addressLength); memset(&clientAddress, 0, addressLength);
@ -97,23 +128,22 @@ _Noreturn void udpServer() {
puts("sock created"); puts("sock created");
/*bind sock to address:port*/ /*bind sock to address:port*/
if (bind(sock, (const struct sockaddr *) &serverAddress, sizeof serverAddress) < 0) { if (bind(sock, (const struct sockaddr *) &serverAddress, addressLength) < 0) {
puts("bind failed"); puts("bind failed");
exit(2); exit(2);
} }
puts("address bound"); puts("address bound");
/*accept connections*/
//TODO: t h r e a d s ? //TODO: t h r e a d s ?
while (1) { for (;;) {
/*receive data*/ /*receive data*/
int recvLen = recvfrom(sock, clientMessage, MESSAGE_STRING_LENGTH, 0, recvLen = recvfrom(sock, clientMessage, MESSAGE_STRING_LENGTH, 0,
(struct sockaddr *) &clientAddress, (socklen_t *) &addressLength); (struct sockaddr *) &clientAddress, (socklen_t *) &addressLength);
uint16_t port = ntohs(clientAddress.sin_port); uint16_t port = ntohs(clientAddress.sin_port);
char *ipv4 = inet_ntoa(clientAddress.sin_addr); char *ipv4 = inet_ntoa(clientAddress.sin_addr);
printf("recvLen = %d from = %s:%d\nmsg = `%s`\n", recvLen, ipv4, port, clientMessage); printf("recvLen = %ld from = %s:%d\nmsg = `%s`\n", recvLen, ipv4, port, clientMessage);
perror("recvfrom"); perror("recvfrom");
if (recvLen >= 0) { if (recvLen >= 0) {

2
server/server.h
View File

@ -19,6 +19,8 @@
#define MESSAGE_STRING_LENGTH 2048 #define MESSAGE_STRING_LENGTH 2048
void server(int tcp, int ipv6);
void tcpServer(); void tcpServer();
_Noreturn void udpServer(); _Noreturn void udpServer();