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Questions tagged [sendto]

sendto() is a system call used to transmit a message to another socket.

sendto() is a system call used to transmit a message to another socket. It is used on a connection-mode socket.

Reference:

217 questions
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Catching unhanded exceptions in a DLL

I am writing C++ socket code using Visual Studio Express 2013 in a .dll project. I am at the point where I am getting an error at this sendto function: /* Send data back */ if (sendto(sd, (const char…
ecain
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SendToAsync memory leak?

I have a simple .net 3.5sp1 windows application (in C#) that acts as a UDP server. It listens on a port, receives data from an endpoint, and then retransmits what it receives to another endpoint (i.e. a relay, for a live broadcast data stream). …
Rodney Burton
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Linux sendto implementation possibly adding extra padding to UDP message

I have recently written a C program using Windows/Winsock2, in which a string is to be transmitted via UDP. The following code produces expected and correct results: static const char *network_config_init = "HF-A11ASSISTHREAD"; void…
Doug Barr
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VS 2008 created shortcut doesn't show up in "Send To" menu

I have a WinForms application built using Visual Studio 2008. I added a Setup Project to the solution to create an installation MSI file. I need the setup project to create a shortcut pointing to the application's executable in the users Send To…
Brettski
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How to interpret sendto Unix socket message?

I have a process fall into infinite loop of keep calling sendto function. I can see the parameters of sendto by strace that process, but I don't know how to read the socket message. Any hint for interpreting this message? sendto(10,…
boyang
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C - How to send char array of bytes over UDP that contain multiple 0 bytes?

I've been trying to send a custom frame over UDP using the sendto() commands to another PC. Works fine but as soon as there is a 0 byte in the array it will (ofcourse) recognize it as a \0 value and stop at that byte. How do can I bypass this to…
rakanishu
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Change Source IP in socket sendto()

My function currently works correctly, however It's sending from my servers main IP address instead of another one. Here is the snippet of code: void *sendpacket(void *par1) { running_threads++; int thread_id = (int)par1; …
user1372896
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Invoking sendto() with wrong length

ssize_t sendto(int socket, const void *message, size_t length, int flags, const struct sockaddr *dest_addr, socklen_t dest_len); In the above sendto() synopsis, 3rd field represents length which is ideally be the size of message being sent in bytes.…
Sunil Bojanapally
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UDP socket (DGRAM) bind/sendto error

I'm new to UDP sockets, I have worked with TCP before. It seems my client can't connect to my server, but I don't know where is the problem. When I run my server, it looks all is working fine. Compiles and runs without a problem and waits for the…
aponcedeleonch
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C++ UDP sendto fails, needs sleep

I have a UDP client C++ code - based on WSA sockets - that works well. The code was originally written in VS6 and I recently recompiled it in VS2010 for 64bit environment, with only little adjustments. Now, the sendto() fails to send something, if…
user3677092
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Sockets sendto() returning EINVAL

I'm trying to send a UDP packet in C. I have the following sendto(): char* msg = "Hello"; //ret is the return value of getaddrinfo, the address is AF_INET (IPv4) //and the sock_type is SOCK_DGRAM (UDP) struct sockaddr_in *ip = (struct sockaddr_in…
Hugo
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struct sockaddr.sa_data appears to be too small

I am doing some interposition in Mac OS X (essentially intercepting C calls) and I noticed that the ping application tries to call the sendto function with an addrlen value of 16. In sys/socket.h I can see clearly that the sa_data array only holds…
Tim Mattison
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Chat simulator in Python not working as expected

What I am trying to do is basically simulate a client-server-client chat using threads. Here is the code so far: from socket import * from threading import Thread import threading import time from random import randint clients = [] HOST =…
Lucian Milut
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android send intent to specific contact (whatsapp, sms, hike, etc.)

I have implemented an app in which I can pick a contact and list some custom information about this contact in a tablelayout. In each row of this tablelayout I have a column (button) which should send a message to the specific user using sms,…
user2477504
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7zip SFX Batch For SendTo Folder

7z a -mx9 -sfx %1.exe %1 This is what i have so far as a batch file, which if i drag and drop a file or folder onto the batch file i get a 7zip SFX on Ultra Compression under the same name as the original file. but this only works if the file is…
Chumbawamba
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