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-rw-r--r--q6/a/client.c47
-rw-r--r--q6/a/server.c49
-rw-r--r--q6/b/client.c47
-rw-r--r--q6/b/server.c44
-rw-r--r--q6/c/client.c41
-rw-r--r--q6/c/server.c38
6 files changed, 266 insertions, 0 deletions
diff --git a/q6/a/client.c b/q6/a/client.c
new file mode 100644
index 0000000..7219476
--- /dev/null
+++ b/q6/a/client.c
@@ -0,0 +1,47 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <sys/types.h>
4#include <sys/socket.h>
5#include <netinet/in.h>
6#include <unistd.h>
7#include <string.h>
8#include <arpa/inet.h>
9#include <string.h>
10
11int main(int argc, char* argv[]) {
12 const char *server_name = "127.0.0.1";
13 int sockfd, connfd;
14 struct sockaddr_in servaddr, cli;
15
16 sockfd = socket(AF_INET, SOCK_STREAM, 0);
17 servaddr.sin_family = AF_INET;
18 inet_pton(AF_INET, server_name, &servaddr.sin_addr);
19
20 int port = atoi(argv[1]);
21 servaddr.sin_port = htons(port);
22
23 if((connect(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr))) == 0) {
24 printf("Connected to server!\n");
25 fflush(stdout);
26 } else {
27 printf("Invalid or busy server address\n");
28 fflush(stdout);
29 exit(0);
30 };
31
32 int cont = 0;
33 char *buf = malloc(1024);
34 printf("Client input: ");
35 fgets(buf, 100, stdin);
36 while(strcmp(buf, "quit\n") != 0) {
37 send(sockfd, buf, 100, 0);
38 if ((cont = recv(sockfd, buf, 100, 0)) > 0) {
39 printf("Server response: %s\n", buf);;
40 fflush(stdout);
41 }
42 printf("Client input: ");
43 fgets(buf, 100, stdin);
44 };
45
46 close(sockfd);
47}
diff --git a/q6/a/server.c b/q6/a/server.c
new file mode 100644
index 0000000..ac258c0
--- /dev/null
+++ b/q6/a/server.c
@@ -0,0 +1,49 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <sys/types.h>
4#include <sys/socket.h>
5#include <netinet/in.h>
6#include <unistd.h>
7#include <string.h>
8#include <arpa/inet.h>
9
10int main(int argc, char *argv[]) {
11 int sockfd, connfd;
12 struct sockaddr_in servaddr, cli;
13
14 sockfd = socket(AF_INET, SOCK_STREAM, 0);
15 servaddr.sin_family = AF_INET;
16 servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
17
18 int port = atoi(argv[1]);
19 servaddr.sin_port = htons(port);
20
21 bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
22
23 listen(sockfd, 128);
24 printf("Server started at %s...\n", inet_ntoa(servaddr.sin_addr));
25 fflush(stdout);
26
27 while(1) {
28 socklen_t len = sizeof(cli);
29 connfd = accept(sockfd, (struct sockaddr *)&cli, &len);
30 int i = getpeername(connfd, (struct sockaddr*)&cli, &len);
31
32 printf("Client connected at port %d\n", htons(cli.sin_port));
33 int n;
34 char buf[100];
35
36 int pid;
37 if((pid=fork())==0){
38 close(sockfd);
39 while((n = recv(connfd, buf, 100, 0)) > 0) {
40 printf("Client message: %s\n", buf);
41 fflush(stdout);
42 send(connfd, buf, n, 0);
43 };
44 exit(0);
45 }
46 close(connfd);
47 }
48 return 0;
49}
diff --git a/q6/b/client.c b/q6/b/client.c
new file mode 100644
index 0000000..7219476
--- /dev/null
+++ b/q6/b/client.c
@@ -0,0 +1,47 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <sys/types.h>
4#include <sys/socket.h>
5#include <netinet/in.h>
6#include <unistd.h>
7#include <string.h>
8#include <arpa/inet.h>
9#include <string.h>
10
11int main(int argc, char* argv[]) {
12 const char *server_name = "127.0.0.1";
13 int sockfd, connfd;
14 struct sockaddr_in servaddr, cli;
15
16 sockfd = socket(AF_INET, SOCK_STREAM, 0);
17 servaddr.sin_family = AF_INET;
18 inet_pton(AF_INET, server_name, &servaddr.sin_addr);
19
20 int port = atoi(argv[1]);
21 servaddr.sin_port = htons(port);
22
23 if((connect(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr))) == 0) {
24 printf("Connected to server!\n");
25 fflush(stdout);
26 } else {
27 printf("Invalid or busy server address\n");
28 fflush(stdout);
29 exit(0);
30 };
31
32 int cont = 0;
33 char *buf = malloc(1024);
34 printf("Client input: ");
35 fgets(buf, 100, stdin);
36 while(strcmp(buf, "quit\n") != 0) {
37 send(sockfd, buf, 100, 0);
38 if ((cont = recv(sockfd, buf, 100, 0)) > 0) {
39 printf("Server response: %s\n", buf);;
40 fflush(stdout);
41 }
42 printf("Client input: ");
43 fgets(buf, 100, stdin);
44 };
45
46 close(sockfd);
47}
diff --git a/q6/b/server.c b/q6/b/server.c
new file mode 100644
index 0000000..e217c2b
--- /dev/null
+++ b/q6/b/server.c
@@ -0,0 +1,44 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <sys/types.h>
4#include <sys/socket.h>
5#include <netinet/in.h>
6#include <unistd.h>
7#include <string.h>
8#include <arpa/inet.h>
9
10int main(int argc, char *argv[]) {
11 int sockfd, connfd;
12 struct sockaddr_in servaddr, cli;
13
14 sockfd = socket(AF_INET, SOCK_STREAM, 0);
15 servaddr.sin_family = AF_INET;
16 servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
17
18 int port = atoi(argv[1]);
19 servaddr.sin_port = htons(port);
20
21 bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
22
23 listen(sockfd, 128);
24 printf("Server started at %s...\n", inet_ntoa(servaddr.sin_addr));
25 fflush(stdout);
26
27 while(1) {
28 socklen_t len = sizeof(cli);
29 connfd = accept(sockfd, (struct sockaddr *)&cli, &len);
30 int i = getpeername(connfd, (struct sockaddr*)&cli, &len);
31
32 printf("Client connected at port %d\n", htons(cli.sin_port));
33 int n;
34 char buf[100];
35
36 while((n = recv(connfd, buf, 100, 0)) > 0) {
37 printf("Client message: %s\n", buf);
38 fflush(stdout);
39 send(connfd, buf, n, 0);
40 };
41 close(connfd);
42 }
43 return 0;
44}
diff --git a/q6/c/client.c b/q6/c/client.c
new file mode 100644
index 0000000..12e00fa
--- /dev/null
+++ b/q6/c/client.c
@@ -0,0 +1,41 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <unistd.h>
5#include <sys/types.h>
6#include <sys/socket.h>
7#include <arpa/inet.h>
8#include <netinet/in.h>
9#include <string.h>
10
11int main(int argc, char *argv[]) {
12 int sockfd;
13 struct sockaddr_in servaddr;
14 sockfd = socket(AF_INET, SOCK_DGRAM, 0);
15
16 servaddr.sin_family = AF_INET;
17 servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
18
19 int port = atoi(argv[1]);
20 servaddr.sin_port = htons(port);
21
22 int n;
23
24 socklen_t len = sizeof(servaddr);
25 char *buf = malloc(100);
26 fgets(buf, 100, stdin);
27 while(strcmp(buf, "quit\n") != 0) {
28 sendto(sockfd, buf, strlen(buf),
29 MSG_CONFIRM, (const struct sockaddr *) &servaddr,
30 sizeof(servaddr));
31
32 n = recvfrom(sockfd, buf, 100,
33 MSG_WAITALL, (struct sockaddr *) &servaddr,
34 &len);
35 printf("Recieved: %s", buf);
36 fgets(buf, 100, stdin);
37 }
38
39 close(sockfd);
40 return 0;
41}
diff --git a/q6/c/server.c b/q6/c/server.c
new file mode 100644
index 0000000..4b25070
--- /dev/null
+++ b/q6/c/server.c
@@ -0,0 +1,38 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <unistd.h>
5#include <sys/types.h>
6#include <sys/socket.h>
7#include <arpa/inet.h>
8#include <netinet/in.h>
9
10int main(int argc, char *argv[]) {
11 int sockfd;
12 struct sockaddr_in servaddr, cli;
13 sockfd = socket(AF_INET, SOCK_DGRAM, 0);
14
15 servaddr.sin_family = AF_INET;
16 servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
17
18 int port = atoi(argv[1]);
19 servaddr.sin_port = htons(port);
20
21 bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr));
22
23 socklen_t len = sizeof(cli);
24 while(1) {
25 int n;
26 char *buf = malloc(100);
27 while(
28 (n = recvfrom(sockfd, (char *)buf, 100, MSG_WAITALL, (struct sockaddr*) &cli, &len))
29 > 0
30 ) {
31 printf("Client message: %s\n", buf);
32 fflush(stdout);
33 sendto(sockfd, buf, n, MSG_CONFIRM, (const struct sockaddr *) &cli, len);
34 }
35 }
36 close(sockfd);
37 return 0;
38}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 09:31:36 +0000