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working udp

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This commit is contained in:
Arthur-Coppey
2021-10-15 14:08:44 +02:00
parent 61221bffff
commit 7ad0e7ad56
7 changed files with 181 additions and 54 deletions
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server/server.c
+68 -9
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@@ -4,10 +4,18 @@
#include "server.h"
//TODO: refactor
//TODO: object-like C
extern int errno;
unsigned long addressLength = sizeof(struct sockaddr_in);
void tcpServer() {
int serverSocket, clientSocket;
long read_size;
unsigned long addressLength;
long recvLen;
// unsigned long addressLength = sizeof(struct sockaddr_in);
struct sockaddr_in serverAddress, clientAddress;
char quote[MESSAGE_STRING_LENGTH] = "";
char clientMessage[MESSAGE_STRING_LENGTH] = "";
@@ -38,13 +46,13 @@ void tcpServer() {
/*accept connections*/
//TODO: t h r e a d s
addressLength = sizeof(struct sockaddr_in);
while ((clientSocket = accept(serverSocket, (struct sockaddr *) &clientAddress, (socklen_t *) &addressLength)) >= 0) {
while ((clientSocket = accept(serverSocket, (struct sockaddr *) &clientAddress, (socklen_t *) &addressLength)) >=
0) {
puts("client connected");
/*receive data*/
while ((read_size = recv(clientSocket, clientMessage, MESSAGE_STRING_LENGTH, 0))) {
if (read_size < 0) {
while ((recvLen = recv(clientSocket, clientMessage, MESSAGE_STRING_LENGTH, 0))) {
if (recvLen < 0) {
puts("receive failed");
} else {
printf("client says: %s\n", clientMessage);
@@ -52,7 +60,7 @@ void tcpServer() {
/*send data*/
getRandomQuote(quote);
printf("responding: \"%s\"\n", quote);
write(clientSocket, quote, strlen(quote));
send(clientSocket, quote, strlen(quote), 0);
}
}
@@ -65,6 +73,57 @@ void tcpServer() {
}
}
void udpServer() {
//TODO: udp handling
_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*/
memset(&serverAddress, 0, addressLength);
memset(&clientAddress, 0, addressLength);
serverAddress.sin_family = AF_INET;
serverAddress.sin_addr.s_addr = INADDR_ANY;
serverAddress.sin_port = htons(17);
/*create sock*/
sock = socket(serverAddress.sin_family, SOCK_DGRAM, IPPROTO_UDP);
if (sock == -1) {
puts("sock not created");
exit(1);
}
puts("sock created");
/*bind sock to address:port*/
if (bind(sock, (const struct sockaddr *) &serverAddress, sizeof serverAddress) < 0) {
puts("bind failed");
exit(2);
}
puts("address bound");
/*accept connections*/
//TODO: t h r e a d s ?
while (1) {
/*receive data*/
int recvLen = recvfrom(sock, clientMessage, MESSAGE_STRING_LENGTH, 0,
(struct sockaddr *) &clientAddress, (socklen_t *) &addressLength);
uint16_t port = ntohs(clientAddress.sin_port);
char *ipv4 = inet_ntoa(clientAddress.sin_addr);
printf("recvLen = %d from = %s:%d\nmsg = `%s`\n", recvLen, ipv4, port, clientMessage);
perror("recvfrom");
if (recvLen >= 0) {
printf("client says: %s\n", clientMessage);
/*send data*/
getRandomQuote(quote);
printf("responding: `%s`\n", quote);
sendto(sock, strcat(quote, "\n"), sizeof quote, 0, (struct sockaddr *) &clientAddress, addressLength);
perror("sendto");
}
}
}