Last active
June 20, 2023 11:56
-
-
Save SkrewEverything/e31096ac01aa67d28eca283dbbbf96a1 to your computer and use it in GitHub Desktop.
Simple TCP Client
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // Client side C/C++ program to demonstrate Socket programming | |
| #include <stdio.h> | |
| #include <sys/socket.h> | |
| #include <stdlib.h> | |
| #include <unistd.h> | |
| #include <netinet/in.h> | |
| #include <string.h> | |
| #include <arpa/inet.h> | |
| #define PORT 8080 | |
| int main(int argc, char const *argv[]) | |
| { | |
| int sock = 0; long valread; | |
| struct sockaddr_in serv_addr; | |
| char *hello = "Hello from client"; | |
| char buffer[1024] = {0}; | |
| if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) | |
| { | |
| printf("\n Socket creation error \n"); | |
| return -1; | |
| } | |
| memset(&serv_addr, 0, sizeof(serv_addr)); | |
| serv_addr.sin_family = AF_INET; | |
| serv_addr.sin_port = htons(PORT); | |
| // Convert IPv4 and IPv6 addresses from text to binary form | |
| if(inet_pton(AF_INET, "127.0.0.1", &serv_addr.sin_addr)<=0) | |
| { | |
| printf("\nInvalid address/ Address not supported \n"); | |
| return -1; | |
| } | |
| if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0) | |
| { | |
| printf("\nConnection Failed \n"); | |
| return -1; | |
| } | |
| send(sock , hello , strlen(hello) , 0 ); | |
| printf("Hello message sent\n"); | |
| valread = read( sock , buffer, 1024); | |
| printf("%s\n",buffer ); | |
| return 0; | |
| } |
Author
@IanKatsy, you are right! It should be 0. But as you said, it didn't cause any issues because we are filling it up later. But thanks for catching the bug. I'll fix it
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Hello there, I got here from this article.
Shouldn't line 24 be
memset(&serv_addr, 0, sizeof(serv_addr));. It shouldn't really matter cause the struct gets filled (don't know if this is the correct term) later, but you never know.