More yamux changes
This commit is contained in:
parent
db67210257
commit
2d74c53b62
18 changed files with 1277 additions and 78 deletions
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@ -30,31 +30,18 @@ struct Dialer* libp2p_conn_dialer_new(struct Libp2pPeer* peer, struct Peerstore*
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struct Dialer* dialer = (struct Dialer*)malloc(sizeof(struct Dialer));
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if (dialer != NULL) {
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dialer->peerstore = peerstore;
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dialer->private_key = rsa_private_key;
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dialer->transport_dialers = NULL;
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dialer->fallback_dialer = libp2p_conn_tcp_transport_dialer_new(dialer->peer_id, rsa_private_key);
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if (peer != NULL) {
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dialer->peer_id = malloc(peer->id_size + 1);
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memset(dialer->peer_id, 0, peer->id_size + 1);
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if (dialer->peer_id != NULL) {
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strncpy(dialer->peer_id, peer->id, peer->id_size);
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// convert private key to rsa private key
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/*
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struct RsaPrivateKey* rsa_private_key = libp2p_crypto_rsa_rsa_private_key_new();
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if (!libp2p_crypto_encoding_x509_der_to_private_key(private_key->data, private_key->data_size, rsa_private_key)) {
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libp2p_crypto_rsa_rsa_private_key_free(rsa_private_key);
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libp2p_conn_dialer_free(dialer);
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return NULL;
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}
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if (!libp2p_crypto_rsa_private_key_fill_public_key(rsa_private_key)) {
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libp2p_crypto_rsa_rsa_private_key_free(rsa_private_key);
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libp2p_conn_dialer_free(dialer);
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return NULL;
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}
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*/
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dialer->private_key = rsa_private_key;
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//TODO: build transport dialers
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dialer->transport_dialers = NULL;
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dialer->fallback_dialer = libp2p_conn_tcp_transport_dialer_new(dialer->peer_id, rsa_private_key);
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return dialer;
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}
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}
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libp2p_conn_dialer_free(dialer);
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return NULL;
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}
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@ -66,6 +53,7 @@ struct Dialer* libp2p_conn_dialer_new(struct Libp2pPeer* peer, struct Peerstore*
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*/
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void libp2p_conn_dialer_free(struct Dialer* in) {
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if (in != NULL) {
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if (in->peer_id != NULL)
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free(in->peer_id);
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libp2p_crypto_rsa_rsa_private_key_free(in->private_key);
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if (in->transport_dialers != NULL) {
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@ -6,12 +6,14 @@
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struct TransportDialer* libp2p_conn_transport_dialer_new(char* peer_id, struct RsaPrivateKey* private_key) {
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struct TransportDialer* out = (struct TransportDialer*)malloc(sizeof(struct TransportDialer));
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if (out != NULL) {
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out->peer_id = NULL;
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out->private_key = NULL;
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if (peer_id != NULL) {
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out->peer_id = malloc(strlen(peer_id) + 1);
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strcpy(out->peer_id, peer_id);
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}
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if (private_key != NULL) {
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out->private_key = private_key;
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} else {
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out->private_key = NULL;
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}
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}
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return out;
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@ -3,6 +3,19 @@
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#include "libp2p/net/stream.h"
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#include "libp2p/conn/session.h"
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/***
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* This is a Stream wrapper around a basic tcp/ip connection
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*/
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/***
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* Create a new stream based on a network connection, and attempt to connect
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* @param fd the handle to the network connection
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* @param ip the IP address of the connection
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* @param port the port of the connection
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* @returns a Stream
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*/
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struct Stream* libp2p_net_connection_new(int fd, char* ip, int port, struct SessionContext* session_context);
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/***
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* Create a new stream based on a network connection
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* @param fd the handle to the network connection
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@ -10,7 +23,7 @@
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* @param port the port of the connection
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* @returns a Stream
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*/
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struct Stream* libp2p_net_connection_new(int fd, char* ip, int port, struct SessionContext* session_context);
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struct Stream* libp2p_net_connection_established(int fd, char* ip, int port, struct SessionContext* session_context);
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/**
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* Attempt to upgrade the parent_stream to use the new stream by default
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19
include/libp2p/net/server.h
Normal file
19
include/libp2p/net/server.h
Normal file
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@ -0,0 +1,19 @@
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/**
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* Header for libp2p/net/server
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*/
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/***
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* Start a server given the information
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* NOTE: This spins off a thread.
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* @param ip the ip address to attach to
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* @param port the port to use
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* @param protocol_handlers the protocol handlers
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* @returns true(1) on success, false(0) otherwise
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*/
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int libp2p_net_server_start(const char* ip, int port, struct Libp2pVector* protocol_handlers);
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/***
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* Shut down the server started by libp2p_net_start_server
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* @returns true(1) on success, false(0) otherwise
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*/
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int libp2p_net_server_stop();
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187
include/libp2p/utils/thread_pool.h
Normal file
187
include/libp2p/utils/thread_pool.h
Normal file
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@ -0,0 +1,187 @@
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/**********************************
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* @author Johan Hanssen Seferidis
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* License: MIT
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*
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**********************************/
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#ifndef _THPOOL_
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#define _THPOOL_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* =================================== API ======================================= */
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typedef struct thpool_* threadpool;
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/**
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* @brief Initialize threadpool
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*
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* Initializes a threadpool. This function will not return untill all
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* threads have initialized successfully.
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*
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* @example
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*
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* ..
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* threadpool thpool; //First we declare a threadpool
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* thpool = thpool_init(4); //then we initialize it to 4 threads
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* ..
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*
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* @param num_threads number of threads to be created in the threadpool
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* @return threadpool created threadpool on success,
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* NULL on error
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*/
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threadpool thpool_init(int num_threads);
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/**
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* @brief Add work to the job queue
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*
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* Takes an action and its argument and adds it to the threadpool's job queue.
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* If you want to add to work a function with more than one arguments then
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* a way to implement this is by passing a pointer to a structure.
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*
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* NOTICE: You have to cast both the function and argument to not get warnings.
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*
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* @example
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*
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* void print_num(int num){
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* printf("%d\n", num);
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* }
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*
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* int main() {
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* ..
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* int a = 10;
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* thpool_add_work(thpool, (void*)print_num, (void*)a);
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* ..
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* }
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*
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* @param threadpool threadpool to which the work will be added
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* @param function_p pointer to function to add as work
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* @param arg_p pointer to an argument
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* @return 0 on successs, -1 otherwise.
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*/
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int thpool_add_work(threadpool, void (*function_p)(void*), void* arg_p);
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/**
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* @brief Wait for all queued jobs to finish
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*
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* Will wait for all jobs - both queued and currently running to finish.
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* Once the queue is empty and all work has completed, the calling thread
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* (probably the main program) will continue.
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*
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* Smart polling is used in wait. The polling is initially 0 - meaning that
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* there is virtually no polling at all. If after 1 seconds the threads
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* haven't finished, the polling interval starts growing exponentially
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* untill it reaches max_secs seconds. Then it jumps down to a maximum polling
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* interval assuming that heavy processing is being used in the threadpool.
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*
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* @example
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*
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* ..
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* threadpool thpool = thpool_init(4);
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* ..
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* // Add a bunch of work
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* ..
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* thpool_wait(thpool);
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* puts("All added work has finished");
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* ..
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*
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* @param threadpool the threadpool to wait for
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* @return nothing
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*/
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void thpool_wait(threadpool);
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/**
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* @brief Pauses all threads immediately
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*
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* The threads will be paused no matter if they are idle or working.
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* The threads return to their previous states once thpool_resume
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* is called.
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*
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* While the thread is being paused, new work can be added.
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*
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* @example
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*
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* threadpool thpool = thpool_init(4);
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* thpool_pause(thpool);
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* ..
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* // Add a bunch of work
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* ..
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* thpool_resume(thpool); // Let the threads start their magic
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*
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* @param threadpool the threadpool where the threads should be paused
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* @return nothing
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*/
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void thpool_pause(threadpool);
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/**
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* @brief Unpauses all threads if they are paused
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*
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* @example
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* ..
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* thpool_pause(thpool);
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* sleep(10); // Delay execution 10 seconds
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* thpool_resume(thpool);
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* ..
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*
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* @param threadpool the threadpool where the threads should be unpaused
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* @return nothing
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*/
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void thpool_resume(threadpool);
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/**
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* @brief Destroy the threadpool
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*
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* This will wait for the currently active threads to finish and then 'kill'
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* the whole threadpool to free up memory.
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*
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* @example
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* int main() {
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* threadpool thpool1 = thpool_init(2);
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* threadpool thpool2 = thpool_init(2);
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* ..
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* thpool_destroy(thpool1);
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* ..
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* return 0;
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* }
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*
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* @param threadpool the threadpool to destroy
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* @return nothing
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*/
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void thpool_destroy(threadpool);
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/**
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* @brief Show currently working threads
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*
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* Working threads are the threads that are performing work (not idle).
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*
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* @example
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* int main() {
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* threadpool thpool1 = thpool_init(2);
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* threadpool thpool2 = thpool_init(2);
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* ..
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* printf("Working threads: %d\n", thpool_num_threads_working(thpool1));
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* ..
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* return 0;
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* }
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*
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* @param threadpool the threadpool of interest
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* @return integer number of threads working
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*/
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int thpool_num_threads_working(threadpool);
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#ifdef __cplusplus
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}
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#endif
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#endif
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@ -24,6 +24,8 @@ struct YamuxContext {
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int am_server;
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int state; // the state of the connection
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struct Libp2pVector* protocol_handlers;
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struct StreamMessage* buffered_message;
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long buffered_message_pos;
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};
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struct YamuxChannelContext {
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@ -7,7 +7,7 @@ endif
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LFLAGS =
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DEPS =
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OBJS = sctp.o socket.o tcp.o udp.o multistream.o protocol.o connectionstream.o stream.o
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OBJS = sctp.o socket.o tcp.o udp.o multistream.o protocol.o connectionstream.o stream.o server.o
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%.o: %.c $(DEPS)
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$(CC) -c -o $@ $< $(CFLAGS)
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@ -66,7 +66,54 @@ int libp2p_net_connection_peek(void* stream_context) {
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* @returns true(1) on success, false(0) otherwise
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*/
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int libp2p_net_connection_read(void* stream_context, struct StreamMessage** msg, int timeout_secs) {
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struct ConnectionContext* ctx = (struct ConnectionContext*) stream_context;
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// read from the socket
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uint8_t buffer[4096];
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uint8_t* result_buffer = NULL;
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int current_size = 0;
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while (1) {
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int retVal = socket_read(ctx->socket_descriptor, (char*)&buffer[0], 4096, 0, timeout_secs);
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if (retVal < 1) { // get out of the loop
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if (retVal < 0) // error
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return -1;
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break;
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}
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// add what we got to the message
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if (result_buffer == NULL) {
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result_buffer = malloc(retVal);
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if (result_buffer == NULL)
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return 0;
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current_size = retVal;
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memcpy(result_buffer, buffer, retVal);
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} else {
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void* alloc = realloc(result_buffer, current_size + retVal);
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if (alloc == NULL) {
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free(result_buffer);
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return 0;
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}
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memcpy(&result_buffer[current_size], buffer, retVal);
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current_size += retVal;
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}
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// Everything ok, loop again (possibly)
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if (retVal != 4096)
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break;
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}
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// now build the message
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if (current_size > 0) {
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*msg = libp2p_stream_message_new();
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struct StreamMessage* result = *msg;
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if (result == NULL) {
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free(result_buffer);
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return 0;
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}
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result->data = result_buffer;
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result->data_size = current_size;
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result->error_number = 0;
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libp2p_logger_debug("connectionstream", "libp2p_connectionstream_read: Received %d bytes", result->data_size);
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}
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return current_size;
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}
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/**
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@ -107,6 +154,14 @@ int libp2p_net_connection_write(void* stream_context, struct StreamMessage* msg)
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return socket_write(ctx->socket_descriptor, (char*)msg->data, msg->data_size, 0);
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}
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int libp2p_net_handle_upgrade(struct Stream* old_stream, struct Stream* new_stream) {
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struct ConnectionContext* ctx = (struct ConnectionContext*) old_stream->stream_context;
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if (ctx->session_context != NULL) {
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ctx->session_context->default_stream = new_stream;
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}
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return 1;
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}
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/***
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* Create a new stream based on a network connection
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* @param fd the handle to the network connection
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@ -114,7 +169,7 @@ int libp2p_net_connection_write(void* stream_context, struct StreamMessage* msg)
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* @param port the port of the connection
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* @returns a Stream
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*/
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struct Stream* libp2p_net_connection_new(int fd, char* ip, int port, struct SessionContext* session_context) {
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struct Stream* libp2p_net_connection_established(int fd, char* ip, int port, struct SessionContext* session_context) {
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struct Stream* out = (struct Stream*) malloc(sizeof(struct Stream));
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if (out != NULL) {
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out->stream_type = STREAM_TYPE_RAW;
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@ -123,6 +178,7 @@ struct Stream* libp2p_net_connection_new(int fd, char* ip, int port, struct Sess
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out->read = libp2p_net_connection_read;
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out->read_raw = libp2p_net_connection_read_raw;
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out->write = libp2p_net_connection_write;
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out->handle_upgrade = libp2p_net_handle_upgrade;
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// Multiaddresss
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char str[strlen(ip) + 25];
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memset(str, 0, strlen(ip) + 16);
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@ -138,13 +194,28 @@ struct Stream* libp2p_net_connection_new(int fd, char* ip, int port, struct Sess
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out->stream_context = ctx;
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ctx->socket_descriptor = fd;
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ctx->session_context = session_context;
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}
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}
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return out;
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}
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/***
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* Create a new stream based on a network connection, and attempt to connect
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* @param fd the handle to the network connection
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* @param ip the IP address of the connection
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* @param port the port of the connection
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* @returns a Stream
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*/
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struct Stream* libp2p_net_connection_new(int fd, char* ip, int port, struct SessionContext* session_context) {
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struct Stream* out = libp2p_net_connection_established(fd, ip, port, session_context);
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if (out != NULL) {
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struct ConnectionContext* ctx = (struct ConnectionContext*) out->stream_context;
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if (!socket_connect4_with_timeout(ctx->socket_descriptor, hostname_to_ip(ip), port, 10) == 0) {
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// unable to connect
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libp2p_stream_free(out);
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out = NULL;
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}
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}
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}
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return out;
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}
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@ -15,12 +15,14 @@
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* @returns true(1) if there was a match, false(0) otherwise
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*/
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const struct Libp2pProtocolHandler* protocol_compare(struct StreamMessage* msg, struct Libp2pVector* protocol_handlers) {
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if (protocol_handlers != NULL) {
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for(int i = 0; i < protocol_handlers->total; i++) {
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const struct Libp2pProtocolHandler* handler = (const struct Libp2pProtocolHandler*) libp2p_utils_vector_get(protocol_handlers, i);
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if (handler->CanHandle(msg)) {
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return handler;
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}
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}
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}
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return NULL;
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}
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@ -50,16 +52,8 @@ int libp2p_protocol_marshal(struct StreamMessage* msg, struct Stream* stream, st
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const struct Libp2pProtocolHandler* handler = protocol_compare(msg, handlers);
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if (handler == NULL) {
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// turn msg->data to a null terminated string for the error message
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char str[msg->data_size + 1];
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memcpy(str, msg->data, msg->data_size);
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str[msg->data_size] = 0;
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for(int i = 0; i < msg->data_size; i++) {
|
||||
if (str[i] == '\n') {
|
||||
str[i] = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
// set the msg->error code
|
||||
msg->error_number = 100;
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
|
187
net/server.c
Normal file
187
net/server.c
Normal file
|
@ -0,0 +1,187 @@
|
|||
/**
|
||||
* A simple tcp server that uses thread pools and protocol handlers
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <pthread.h>
|
||||
#include <netinet/in.h>
|
||||
#include <arpa/inet.h>
|
||||
|
||||
#include "libp2p/conn/session.h"
|
||||
#include "libp2p/net/connectionstream.h"
|
||||
#include "libp2p/net/multistream.h"
|
||||
#include "libp2p/net/p2pnet.h"
|
||||
#include "libp2p/net/protocol.h"
|
||||
#include "libp2p/nodeio/nodeio.h"
|
||||
#include "libp2p/os/utils.h"
|
||||
#include "libp2p/record/message.h"
|
||||
#include "libp2p/routing/dht_protocol.h"
|
||||
#include "libp2p/secio/secio.h"
|
||||
#include "libp2p/utils/logger.h"
|
||||
#include "libp2p/utils/thread_pool.h"
|
||||
|
||||
struct server_connection_params {
|
||||
uint32_t ip_address_binary;
|
||||
const char* ip_address_text;
|
||||
uint16_t port;
|
||||
struct Libp2pVector* protocol_handlers;
|
||||
};
|
||||
|
||||
struct client_connection_params {
|
||||
int file_descriptor;
|
||||
int count;
|
||||
uint16_t port;
|
||||
char* ip;
|
||||
struct Libp2pVector* protocol_handlers;
|
||||
};
|
||||
|
||||
// this is the thread id NOTE: there should only be 1 server per instance, as this is a global
|
||||
pthread_t server_pthread;
|
||||
|
||||
#define BUF_SIZE 4096
|
||||
|
||||
// this should be set to 5 for normal operation, perhaps higher for debugging purposes
|
||||
#define DEFAULT_NETWORK_TIMEOUT 5
|
||||
|
||||
static int server_shutting_down = 0;
|
||||
|
||||
/**
|
||||
* We've received a new connection. Find out what they want.
|
||||
*
|
||||
* @param ptr a pointer to a null_connection_params struct
|
||||
*/
|
||||
void libp2p_net_connection (void *ptr) {
|
||||
struct client_connection_params *connection_param = (struct client_connection_params*) ptr;
|
||||
int retVal = 0;
|
||||
|
||||
libp2p_logger_info("null", "Connection %d, count %d\n", connection_param->file_descriptor, connection_param->count);
|
||||
|
||||
//TODO: build a stream from the given information
|
||||
struct Stream* clientStream = libp2p_net_connection_established(connection_param->file_descriptor, connection_param->ip, connection_param->port, NULL);
|
||||
|
||||
// try to read from the network
|
||||
struct StreamMessage *results = NULL;
|
||||
// handle the call
|
||||
for(;;) {
|
||||
// Read from the network
|
||||
if (!clientStream->read(clientStream->stream_context, &results, DEFAULT_NETWORK_TIMEOUT)) {
|
||||
// problem reading
|
||||
break;
|
||||
}
|
||||
if (results != NULL) {
|
||||
retVal = libp2p_protocol_marshal(results, clientStream, connection_param->protocol_handlers);
|
||||
libp2p_stream_message_free(results);
|
||||
results = NULL;
|
||||
}
|
||||
if (retVal < 0 || server_shutting_down) {
|
||||
// exit the loop on error
|
||||
break;
|
||||
}
|
||||
} // end of loop
|
||||
|
||||
connection_param->count--; // update counter.
|
||||
if (connection_param->ip != NULL)
|
||||
free(connection_param->ip);
|
||||
free (connection_param);
|
||||
return;
|
||||
}
|
||||
|
||||
/***
|
||||
* Called by the daemon to listen for connections
|
||||
* @param ptr a pointer to an IpfsNodeListenParams struct
|
||||
* @returns nothing useful.
|
||||
*/
|
||||
void* libp2p_server_listen (void *ptr)
|
||||
{
|
||||
server_shutting_down = 0;
|
||||
int socketfd, s, count = 0;
|
||||
threadpool thpool = thpool_init(25);
|
||||
struct server_connection_params *connection_param = (struct server_connection_params*)ptr;
|
||||
|
||||
if ((socketfd = socket_listen(socket_tcp4(), &(connection_param->ip_address_binary), &(connection_param->port))) <= 0) {
|
||||
libp2p_logger_error("null", "Failed to init null router. Address: %d, Port: %d\n", connection_param->ip_address_text, connection_param->port);
|
||||
return (void*) 2;
|
||||
}
|
||||
|
||||
struct client_connection_params* clientConnection = NULL;
|
||||
|
||||
// the main loop, listening for new connections
|
||||
for (;;) {
|
||||
int numDescriptors = socket_read_select4(socketfd, 2);
|
||||
if (server_shutting_down) {
|
||||
break;
|
||||
}
|
||||
if (numDescriptors > 0) {
|
||||
s = socket_accept4(socketfd, &(connection_param->ip_address_binary), &(connection_param->port));
|
||||
if (count >= 50) { // limit reached.
|
||||
close (s);
|
||||
continue;
|
||||
}
|
||||
|
||||
count++;
|
||||
clientConnection = malloc (sizeof (struct client_connection_params));
|
||||
if (clientConnection) {
|
||||
clientConnection->file_descriptor = s;
|
||||
clientConnection->count = count;
|
||||
clientConnection->port = connection_param->port;
|
||||
clientConnection->ip = malloc(INET_ADDRSTRLEN);
|
||||
clientConnection->protocol_handlers = connection_param->protocol_handlers;
|
||||
if (clientConnection->ip == NULL) {
|
||||
// we are out of memory
|
||||
free(clientConnection);
|
||||
continue;
|
||||
}
|
||||
if (inet_ntop(AF_INET, &(connection_param->ip_address_binary), clientConnection->ip, INET_ADDRSTRLEN) == NULL) {
|
||||
free(clientConnection->ip);
|
||||
clientConnection->ip = NULL;
|
||||
clientConnection->port = 0;
|
||||
}
|
||||
// Create pthread for clientConnection.
|
||||
thpool_add_work(thpool, libp2p_net_connection, clientConnection);
|
||||
}
|
||||
} else {
|
||||
// timeout...
|
||||
}
|
||||
}
|
||||
|
||||
thpool_destroy(thpool);
|
||||
|
||||
free(connection_param);
|
||||
|
||||
close(socketfd);
|
||||
|
||||
return (void*) 2;
|
||||
}
|
||||
|
||||
/***
|
||||
* Start a server given the information
|
||||
* NOTE: This spins off a thread.
|
||||
* @param ip the ip address to attach to
|
||||
* @param port the port to use
|
||||
* @param protocol_handlers the protocol handlers
|
||||
* @returns true(1) on success, false(0) otherwise
|
||||
*/
|
||||
int libp2p_net_server_start(const char* ip, int port, struct Libp2pVector* protocol_handlers) {
|
||||
struct server_connection_params* params = (struct server_connection_params*) malloc(sizeof(struct server_connection_params));
|
||||
params->ip_address_text = ip;
|
||||
inet_pton(AF_INET, ip, ¶ms->ip_address_binary);
|
||||
params->port = port;
|
||||
params->protocol_handlers = protocol_handlers;
|
||||
// start on a separate thread
|
||||
pthread_create(&server_pthread, NULL, libp2p_server_listen, params);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/***
|
||||
* Shut down the server started by libp2p_net_start_server
|
||||
* @returns true(1) on success, false(0) otherwise
|
||||
*/
|
||||
int libp2p_net_server_stop() {
|
||||
server_shutting_down = 1;
|
||||
pthread_join(server_pthread, NULL);
|
||||
return 1;
|
||||
}
|
|
@ -1308,6 +1308,14 @@ int libp2p_secio_peek(void* stream_context) {
|
|||
return ctx->stream->parent_stream->peek(ctx->stream->parent_stream->stream_context);
|
||||
}
|
||||
|
||||
/***
|
||||
* Read a certain amount of bytes from the network
|
||||
* @param stream_context the secio context
|
||||
* @param buffer where to put the bytes read
|
||||
* @param buffer_size the size of the incoming buffer
|
||||
* @param timeout_secs the network timeout
|
||||
* @returns the number of bytes read.
|
||||
*/
|
||||
int libp2p_secio_read_raw(void* stream_context, uint8_t* buffer, int buffer_size, int timeout_secs) {
|
||||
if (stream_context == NULL) {
|
||||
return -1;
|
||||
|
@ -1320,6 +1328,7 @@ int libp2p_secio_read_raw(void* stream_context, uint8_t* buffer, int buffer_size
|
|||
}
|
||||
ctx->buffered_message_pos = 0;
|
||||
}
|
||||
// max_to_read is the lesser of bytes read or buffer_size
|
||||
int max_to_read = (buffer_size > ctx->buffered_message->data_size ? ctx->buffered_message->data_size : buffer_size);
|
||||
memcpy(buffer, &ctx->buffered_message->data[ctx->buffered_message_pos], max_to_read);
|
||||
ctx->buffered_message_pos += max_to_read;
|
||||
|
|
10
test/test_net.h
Normal file
10
test/test_net.h
Normal file
|
@ -0,0 +1,10 @@
|
|||
#include <stdio.h>
|
||||
#include "libp2p/net/server.h"
|
||||
|
||||
int test_net_server_startup_shutdown() {
|
||||
|
||||
libp2p_net_server_start("127.0.0.1", 1234, NULL);
|
||||
sleep(5);
|
||||
libp2p_net_server_stop();
|
||||
return 1;
|
||||
}
|
|
@ -5,6 +5,7 @@
|
|||
#include "libp2p/utils/logger.h"
|
||||
#include "libp2p/net/stream.h"
|
||||
#include "libp2p/net/multistream.h"
|
||||
#include "libp2p/net/server.h"
|
||||
|
||||
/***
|
||||
* Helpers
|
||||
|
@ -50,6 +51,24 @@ int mock_identify_read_protocol(void* context, struct StreamMessage** msg, int n
|
|||
return 1;
|
||||
}
|
||||
|
||||
/***
|
||||
* Sends back the identify protocol (in a yamux wrapper) to fake negotiation
|
||||
*/
|
||||
int mock_multistream_read_protocol(void* context, struct StreamMessage** msg, int network_timeout) {
|
||||
struct StreamMessage message;
|
||||
const char* id = "/multistream/1.0.0\n";
|
||||
message.data_size = strlen(id);
|
||||
message.data = (uint8_t*)id;
|
||||
|
||||
*msg = libp2p_yamux_prepare_to_send(&message);
|
||||
// adjust the frame
|
||||
struct yamux_frame* frame = (struct yamux_frame*)(*msg)->data;
|
||||
frame->streamid = 1;
|
||||
frame->flags = yamux_frame_syn;
|
||||
encode_frame(frame);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int mock_counter = 0;
|
||||
|
||||
/***
|
||||
|
@ -137,6 +156,43 @@ int test_yamux_identify() {
|
|||
return retVal;
|
||||
}
|
||||
|
||||
/***
|
||||
* Attempt to add a protocol to the Yamux protocol
|
||||
*/
|
||||
/*
|
||||
int test_yamux_multistream() {
|
||||
int retVal = 0;
|
||||
// setup
|
||||
// mock
|
||||
struct Stream* mock_stream = mock_stream_new();
|
||||
mock_stream->read = mock_yamux_read_protocol;
|
||||
// protocol handlers
|
||||
struct Libp2pVector* protocol_handlers = libp2p_utils_vector_new(1);
|
||||
struct Libp2pProtocolHandler* handler = libp2p_identify_build_protocol_handler(protocol_handlers);
|
||||
libp2p_utils_vector_add(protocol_handlers, handler);
|
||||
// yamux
|
||||
struct Stream* yamux_stream = libp2p_yamux_stream_new(mock_stream, 0, protocol_handlers);
|
||||
if (yamux_stream == NULL)
|
||||
goto exit;
|
||||
// Now add in another protocol
|
||||
mock_stream->read = mock_multistream_read_protocol;
|
||||
if (!libp2p_yamux_stream_add(yamux_stream->stream_context, libp2p_multistream_stream_new(yamux_stream))) {
|
||||
goto exit;
|
||||
}
|
||||
// tear down
|
||||
retVal = 1;
|
||||
exit:
|
||||
if (yamux_stream != NULL)
|
||||
yamux_stream->close(yamux_stream);
|
||||
libp2p_protocol_handlers_shutdown(protocol_handlers);
|
||||
if (mock_message != NULL) {
|
||||
libp2p_stream_message_free(mock_message);
|
||||
mock_message = NULL;
|
||||
}
|
||||
return retVal;
|
||||
}
|
||||
*/
|
||||
|
||||
int test_yamux_incoming_protocol_request() {
|
||||
int retVal = 0;
|
||||
|
||||
|
@ -270,3 +326,42 @@ int test_yamux_identity_frame() {
|
|||
return retVal;
|
||||
|
||||
}
|
||||
|
||||
int test_yamux_client_server_connect() {
|
||||
int retVal = 0;
|
||||
struct Libp2pVector* protocol_handlers = NULL;
|
||||
struct StreamMessage* resultMessage = NULL;
|
||||
|
||||
//libp2p_logger_add_class("connectionstream");
|
||||
|
||||
// setup
|
||||
// build the protocol handler that can handle yamux
|
||||
protocol_handlers = libp2p_utils_vector_new(1);
|
||||
struct Libp2pProtocolHandler* handler = libp2p_yamux_build_protocol_handler(protocol_handlers);
|
||||
libp2p_utils_vector_add(protocol_handlers, handler);
|
||||
// set up server
|
||||
libp2p_net_server_start("127.0.0.1", 1234, protocol_handlers);
|
||||
sleep(1);
|
||||
// set up client (easiest to use transport dialers)
|
||||
struct Dialer* dialer = libp2p_conn_dialer_new(NULL, NULL, NULL);
|
||||
struct MultiAddress* server_ma = multiaddress_new_from_string("/ip4/127.0.0.1/tcp/1234");
|
||||
struct Stream* stream = libp2p_conn_dialer_get_connection(dialer, server_ma);
|
||||
if (stream == NULL) {
|
||||
fprintf(stderr, "Unable to get stream.\n");
|
||||
goto exit;
|
||||
}
|
||||
// have client attempt to connect to server and negotiate yamux
|
||||
struct Stream* yamux_stream = libp2p_yamux_stream_new(stream, 0, protocol_handlers);
|
||||
if (yamux_stream == NULL) {
|
||||
fprintf(stderr, "Was supposed to get yamux protocol id, but instead received nothing.\n");
|
||||
goto exit;
|
||||
}
|
||||
retVal = 1;
|
||||
exit:
|
||||
libp2p_net_server_stop();
|
||||
if (protocol_handlers != NULL) {
|
||||
|
||||
}
|
||||
return retVal;
|
||||
|
||||
}
|
||||
|
|
|
@ -14,6 +14,7 @@
|
|||
#include "test_record.h"
|
||||
#include "test_peer.h"
|
||||
#include "test_yamux.h"
|
||||
#include "test_net.h"
|
||||
#include "libp2p/utils/logger.h"
|
||||
|
||||
struct test {
|
||||
|
@ -117,6 +118,8 @@ int build_test_collection() {
|
|||
add_test("test_yamux_stream_new", test_yamux_stream_new, 1);
|
||||
add_test("test_yamux_identify", test_yamux_identify, 1);
|
||||
add_test("test_yamux_incoming_protocol_request", test_yamux_incoming_protocol_request, 1);
|
||||
add_test("test_net_server_startup_shutdown", test_net_server_startup_shutdown, 1);
|
||||
add_test("test_yamux_client_server_connect", test_yamux_client_server_connect, 1);
|
||||
return 1;
|
||||
};
|
||||
|
||||
|
|
|
@ -7,7 +7,7 @@ endif
|
|||
|
||||
LFLAGS =
|
||||
DEPS =
|
||||
OBJS = string_list.o vector.o linked_list.o logger.o urlencode.o
|
||||
OBJS = string_list.o vector.o linked_list.o logger.o urlencode.o thread_pool.o
|
||||
|
||||
%.o: %.c $(DEPS)
|
||||
$(CC) -c -o $@ $< $(CFLAGS)
|
||||
|
|
555
utils/thread_pool.c
Normal file
555
utils/thread_pool.c
Normal file
|
@ -0,0 +1,555 @@
|
|||
/* ********************************
|
||||
* Author: Johan Hanssen Seferidis
|
||||
* License: MIT
|
||||
* Description: Library providing a threading pool where you can add
|
||||
* work. For usage, check the thpool.h file or README.md
|
||||
*
|
||||
*//** @file thpool.h *//*
|
||||
*
|
||||
********************************/
|
||||
|
||||
#define _POSIX_C_SOURCE 200809L
|
||||
#include <unistd.h>
|
||||
#include <signal.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <pthread.h>
|
||||
#include <errno.h>
|
||||
#include <time.h>
|
||||
#if defined(__linux__)
|
||||
#include <sys/prctl.h>
|
||||
#endif
|
||||
|
||||
#include "libp2p/utils/thread_pool.h"
|
||||
|
||||
#ifdef THPOOL_DEBUG
|
||||
#define THPOOL_DEBUG 1
|
||||
#else
|
||||
#define THPOOL_DEBUG 0
|
||||
#endif
|
||||
|
||||
#if !defined(DISABLE_PRINT) || defined(THPOOL_DEBUG)
|
||||
#define err(str) fprintf(stderr, str)
|
||||
#else
|
||||
#define err(str)
|
||||
#endif
|
||||
|
||||
static volatile int threads_keepalive;
|
||||
static volatile int threads_on_hold;
|
||||
|
||||
|
||||
|
||||
/* ========================== STRUCTURES ============================ */
|
||||
|
||||
|
||||
/* Binary semaphore */
|
||||
typedef struct bsem {
|
||||
pthread_mutex_t mutex;
|
||||
pthread_cond_t cond;
|
||||
int v;
|
||||
} bsem;
|
||||
|
||||
|
||||
/* Job */
|
||||
typedef struct job{
|
||||
struct job* prev; /* pointer to previous job */
|
||||
void (*function)(void* arg); /* function pointer */
|
||||
void* arg; /* function's argument */
|
||||
} job;
|
||||
|
||||
|
||||
/* Job queue */
|
||||
typedef struct jobqueue{
|
||||
pthread_mutex_t rwmutex; /* used for queue r/w access */
|
||||
job *front; /* pointer to front of queue */
|
||||
job *rear; /* pointer to rear of queue */
|
||||
bsem *has_jobs; /* flag as binary semaphore */
|
||||
int len; /* number of jobs in queue */
|
||||
} jobqueue;
|
||||
|
||||
|
||||
/* Thread */
|
||||
typedef struct thread{
|
||||
int id; /* friendly id */
|
||||
pthread_t pthread; /* pointer to actual thread */
|
||||
struct thpool_* thpool_p; /* access to thpool */
|
||||
} thread;
|
||||
|
||||
|
||||
/* Threadpool */
|
||||
typedef struct thpool_{
|
||||
thread** threads; /* pointer to threads */
|
||||
volatile int num_threads_alive; /* threads currently alive */
|
||||
volatile int num_threads_working; /* threads currently working */
|
||||
pthread_mutex_t thcount_lock; /* used for thread count etc */
|
||||
pthread_cond_t threads_all_idle; /* signal to thpool_wait */
|
||||
jobqueue jobqueue; /* job queue */
|
||||
} thpool_;
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/* ========================== PROTOTYPES ============================ */
|
||||
|
||||
|
||||
static int thread_init(thpool_* thpool_p, struct thread** thread_p, int id);
|
||||
static void* thread_do(struct thread* thread_p);
|
||||
static void thread_hold(int sig_id);
|
||||
static void thread_destroy(struct thread* thread_p);
|
||||
|
||||
static int jobqueue_init(jobqueue* jobqueue_p);
|
||||
static void jobqueue_clear(jobqueue* jobqueue_p);
|
||||
static void jobqueue_push(jobqueue* jobqueue_p, struct job* newjob_p);
|
||||
static struct job* jobqueue_pull(jobqueue* jobqueue_p);
|
||||
static void jobqueue_destroy(jobqueue* jobqueue_p);
|
||||
|
||||
static void bsem_init(struct bsem *bsem_p, int value);
|
||||
static void bsem_reset(struct bsem *bsem_p);
|
||||
static void bsem_post(struct bsem *bsem_p);
|
||||
static void bsem_post_all(struct bsem *bsem_p);
|
||||
static void bsem_wait(struct bsem *bsem_p);
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/* ========================== THREADPOOL ============================ */
|
||||
|
||||
|
||||
/* Initialise thread pool */
|
||||
struct thpool_* thpool_init(int num_threads){
|
||||
|
||||
threads_on_hold = 0;
|
||||
threads_keepalive = 1;
|
||||
|
||||
if (num_threads < 0){
|
||||
num_threads = 0;
|
||||
}
|
||||
|
||||
/* Make new thread pool */
|
||||
thpool_* thpool_p;
|
||||
thpool_p = (struct thpool_*)malloc(sizeof(struct thpool_));
|
||||
if (thpool_p == NULL){
|
||||
err("thpool_init(): Could not allocate memory for thread pool\n");
|
||||
return NULL;
|
||||
}
|
||||
thpool_p->num_threads_alive = 0;
|
||||
thpool_p->num_threads_working = 0;
|
||||
|
||||
/* Initialise the job queue */
|
||||
if (jobqueue_init(&thpool_p->jobqueue) == -1){
|
||||
err("thpool_init(): Could not allocate memory for job queue\n");
|
||||
free(thpool_p);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Make threads in pool */
|
||||
thpool_p->threads = (struct thread**)malloc(num_threads * sizeof(struct thread *));
|
||||
if (thpool_p->threads == NULL){
|
||||
err("thpool_init(): Could not allocate memory for threads\n");
|
||||
jobqueue_destroy(&thpool_p->jobqueue);
|
||||
free(thpool_p);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
pthread_mutex_init(&(thpool_p->thcount_lock), NULL);
|
||||
pthread_cond_init(&thpool_p->threads_all_idle, NULL);
|
||||
|
||||
/* Thread init */
|
||||
int n;
|
||||
for (n=0; n<num_threads; n++){
|
||||
thread_init(thpool_p, &thpool_p->threads[n], n);
|
||||
#if THPOOL_DEBUG
|
||||
printf("THPOOL_DEBUG: Created thread %d in pool \n", n);
|
||||
#endif
|
||||
}
|
||||
|
||||
/* Wait for threads to initialize */
|
||||
while (thpool_p->num_threads_alive != num_threads) {}
|
||||
|
||||
return thpool_p;
|
||||
}
|
||||
|
||||
|
||||
/* Add work to the thread pool */
|
||||
int thpool_add_work(thpool_* thpool_p, void (*function_p)(void*), void* arg_p){
|
||||
job* newjob;
|
||||
|
||||
newjob=(struct job*)malloc(sizeof(struct job));
|
||||
if (newjob==NULL){
|
||||
err("thpool_add_work(): Could not allocate memory for new job\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* add function and argument */
|
||||
newjob->function=function_p;
|
||||
newjob->arg=arg_p;
|
||||
|
||||
/* add job to queue */
|
||||
jobqueue_push(&thpool_p->jobqueue, newjob);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* Wait until all jobs have finished */
|
||||
void thpool_wait(thpool_* thpool_p){
|
||||
pthread_mutex_lock(&thpool_p->thcount_lock);
|
||||
while (thpool_p->jobqueue.len || thpool_p->num_threads_working) {
|
||||
pthread_cond_wait(&thpool_p->threads_all_idle, &thpool_p->thcount_lock);
|
||||
}
|
||||
pthread_mutex_unlock(&thpool_p->thcount_lock);
|
||||
}
|
||||
|
||||
|
||||
/* Destroy the threadpool */
|
||||
void thpool_destroy(thpool_* thpool_p){
|
||||
/* No need to destory if it's NULL */
|
||||
if (thpool_p == NULL) return ;
|
||||
|
||||
volatile int threads_total = thpool_p->num_threads_alive;
|
||||
|
||||
/* End each thread 's infinite loop */
|
||||
threads_keepalive = 0;
|
||||
|
||||
/* Give one second to kill idle threads */
|
||||
double TIMEOUT = 1.0;
|
||||
time_t start, end;
|
||||
double tpassed = 0.0;
|
||||
time (&start);
|
||||
while (tpassed < TIMEOUT && thpool_p->num_threads_alive){
|
||||
bsem_post_all(thpool_p->jobqueue.has_jobs);
|
||||
time (&end);
|
||||
tpassed = difftime(end,start);
|
||||
}
|
||||
|
||||
/* Poll remaining threads */
|
||||
while (thpool_p->num_threads_alive){
|
||||
bsem_post_all(thpool_p->jobqueue.has_jobs);
|
||||
sleep(1);
|
||||
}
|
||||
|
||||
/* Job queue cleanup */
|
||||
jobqueue_destroy(&thpool_p->jobqueue);
|
||||
/* Deallocs */
|
||||
int n;
|
||||
for (n=0; n < threads_total; n++){
|
||||
thread_destroy(thpool_p->threads[n]);
|
||||
}
|
||||
free(thpool_p->threads);
|
||||
free(thpool_p);
|
||||
}
|
||||
|
||||
|
||||
/* Pause all threads in threadpool */
|
||||
void thpool_pause(thpool_* thpool_p) {
|
||||
int n;
|
||||
for (n=0; n < thpool_p->num_threads_alive; n++){
|
||||
pthread_kill(thpool_p->threads[n]->pthread, SIGUSR1);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Resume all threads in threadpool */
|
||||
void thpool_resume(thpool_* thpool_p) {
|
||||
// resuming a single threadpool hasn't been
|
||||
// implemented yet, meanwhile this supresses
|
||||
// the warnings
|
||||
(void)thpool_p;
|
||||
|
||||
threads_on_hold = 0;
|
||||
}
|
||||
|
||||
|
||||
int thpool_num_threads_working(thpool_* thpool_p){
|
||||
return thpool_p->num_threads_working;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/* ============================ THREAD ============================== */
|
||||
|
||||
|
||||
/* Initialize a thread in the thread pool
|
||||
*
|
||||
* @param thread address to the pointer of the thread to be created
|
||||
* @param id id to be given to the thread
|
||||
* @return 0 on success, -1 otherwise.
|
||||
*/
|
||||
static int thread_init (thpool_* thpool_p, struct thread** thread_p, int id){
|
||||
|
||||
*thread_p = (struct thread*)malloc(sizeof(struct thread));
|
||||
if (thread_p == NULL){
|
||||
err("thread_init(): Could not allocate memory for thread\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
(*thread_p)->thpool_p = thpool_p;
|
||||
(*thread_p)->id = id;
|
||||
|
||||
pthread_create(&(*thread_p)->pthread, NULL, (void *)thread_do, (*thread_p));
|
||||
pthread_detach((*thread_p)->pthread);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* Sets the calling thread on hold */
|
||||
static void thread_hold(int sig_id) {
|
||||
(void)sig_id;
|
||||
threads_on_hold = 1;
|
||||
while (threads_on_hold){
|
||||
sleep(1);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#if defined(__APPLE__) && defined(__MACH__)
|
||||
int pthread_setname_np(const char* name);
|
||||
#endif
|
||||
|
||||
/* What each thread is doing
|
||||
*
|
||||
* In principle this is an endless loop. The only time this loop gets interuppted is once
|
||||
* thpool_destroy() is invoked or the program exits.
|
||||
*
|
||||
* @param thread thread that will run this function
|
||||
* @return nothing
|
||||
*/
|
||||
static void* thread_do(struct thread* thread_p){
|
||||
|
||||
/* Set thread name for profiling and debuging */
|
||||
char thread_name[128] = {0};
|
||||
sprintf(thread_name, "thread-pool-%d", thread_p->id);
|
||||
|
||||
#if defined(__linux__)
|
||||
/* Use prctl instead to prevent using _GNU_SOURCE flag and implicit declaration */
|
||||
prctl(PR_SET_NAME, thread_name);
|
||||
#elif defined(__APPLE__) && defined(__MACH__)
|
||||
pthread_setname_np(thread_name);
|
||||
#else
|
||||
err("thread_do(): pthread_setname_np is not supported on this system");
|
||||
#endif
|
||||
|
||||
/* Assure all threads have been created before starting serving */
|
||||
thpool_* thpool_p = thread_p->thpool_p;
|
||||
|
||||
/* Register signal handler */
|
||||
struct sigaction act;
|
||||
sigemptyset(&act.sa_mask);
|
||||
act.sa_flags = 0;
|
||||
act.sa_handler = thread_hold;
|
||||
if (sigaction(SIGUSR1, &act, NULL) == -1) {
|
||||
err("thread_do(): cannot handle SIGUSR1");
|
||||
}
|
||||
|
||||
/* Mark thread as alive (initialized) */
|
||||
pthread_mutex_lock(&thpool_p->thcount_lock);
|
||||
thpool_p->num_threads_alive += 1;
|
||||
pthread_mutex_unlock(&thpool_p->thcount_lock);
|
||||
|
||||
while(threads_keepalive){
|
||||
|
||||
bsem_wait(thpool_p->jobqueue.has_jobs);
|
||||
|
||||
if (threads_keepalive){
|
||||
|
||||
pthread_mutex_lock(&thpool_p->thcount_lock);
|
||||
thpool_p->num_threads_working++;
|
||||
pthread_mutex_unlock(&thpool_p->thcount_lock);
|
||||
|
||||
/* Read job from queue and execute it */
|
||||
void (*func_buff)(void*);
|
||||
void* arg_buff;
|
||||
job* job_p = jobqueue_pull(&thpool_p->jobqueue);
|
||||
if (job_p) {
|
||||
func_buff = job_p->function;
|
||||
arg_buff = job_p->arg;
|
||||
func_buff(arg_buff);
|
||||
free(job_p);
|
||||
}
|
||||
|
||||
pthread_mutex_lock(&thpool_p->thcount_lock);
|
||||
thpool_p->num_threads_working--;
|
||||
if (!thpool_p->num_threads_working) {
|
||||
pthread_cond_signal(&thpool_p->threads_all_idle);
|
||||
}
|
||||
pthread_mutex_unlock(&thpool_p->thcount_lock);
|
||||
|
||||
}
|
||||
}
|
||||
pthread_mutex_lock(&thpool_p->thcount_lock);
|
||||
thpool_p->num_threads_alive --;
|
||||
pthread_mutex_unlock(&thpool_p->thcount_lock);
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/* Frees a thread */
|
||||
static void thread_destroy (thread* thread_p){
|
||||
free(thread_p);
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/* ============================ JOB QUEUE =========================== */
|
||||
|
||||
|
||||
/* Initialize queue */
|
||||
static int jobqueue_init(jobqueue* jobqueue_p){
|
||||
jobqueue_p->len = 0;
|
||||
jobqueue_p->front = NULL;
|
||||
jobqueue_p->rear = NULL;
|
||||
|
||||
jobqueue_p->has_jobs = (struct bsem*)malloc(sizeof(struct bsem));
|
||||
if (jobqueue_p->has_jobs == NULL){
|
||||
return -1;
|
||||
}
|
||||
|
||||
pthread_mutex_init(&(jobqueue_p->rwmutex), NULL);
|
||||
bsem_init(jobqueue_p->has_jobs, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/* Clear the queue */
|
||||
static void jobqueue_clear(jobqueue* jobqueue_p){
|
||||
|
||||
while(jobqueue_p->len){
|
||||
free(jobqueue_pull(jobqueue_p));
|
||||
}
|
||||
|
||||
jobqueue_p->front = NULL;
|
||||
jobqueue_p->rear = NULL;
|
||||
bsem_reset(jobqueue_p->has_jobs);
|
||||
jobqueue_p->len = 0;
|
||||
|
||||
}
|
||||
|
||||
|
||||
/* Add (allocated) job to queue
|
||||
*/
|
||||
static void jobqueue_push(jobqueue* jobqueue_p, struct job* newjob){
|
||||
|
||||
pthread_mutex_lock(&jobqueue_p->rwmutex);
|
||||
newjob->prev = NULL;
|
||||
|
||||
switch(jobqueue_p->len){
|
||||
|
||||
case 0: /* if no jobs in queue */
|
||||
jobqueue_p->front = newjob;
|
||||
jobqueue_p->rear = newjob;
|
||||
break;
|
||||
|
||||
default: /* if jobs in queue */
|
||||
jobqueue_p->rear->prev = newjob;
|
||||
jobqueue_p->rear = newjob;
|
||||
|
||||
}
|
||||
jobqueue_p->len++;
|
||||
|
||||
bsem_post(jobqueue_p->has_jobs);
|
||||
pthread_mutex_unlock(&jobqueue_p->rwmutex);
|
||||
}
|
||||
|
||||
|
||||
/* Get first job from queue(removes it from queue)
|
||||
<<<<<<< HEAD
|
||||
*
|
||||
* Notice: Caller MUST hold a mutex
|
||||
=======
|
||||
>>>>>>> da2c0fe45e43ce0937f272c8cd2704bdc0afb490
|
||||
*/
|
||||
static struct job* jobqueue_pull(jobqueue* jobqueue_p){
|
||||
|
||||
pthread_mutex_lock(&jobqueue_p->rwmutex);
|
||||
job* job_p = jobqueue_p->front;
|
||||
|
||||
switch(jobqueue_p->len){
|
||||
|
||||
case 0: /* if no jobs in queue */
|
||||
break;
|
||||
|
||||
case 1: /* if one job in queue */
|
||||
jobqueue_p->front = NULL;
|
||||
jobqueue_p->rear = NULL;
|
||||
jobqueue_p->len = 0;
|
||||
break;
|
||||
|
||||
default: /* if >1 jobs in queue */
|
||||
jobqueue_p->front = job_p->prev;
|
||||
jobqueue_p->len--;
|
||||
/* more than one job in queue -> post it */
|
||||
bsem_post(jobqueue_p->has_jobs);
|
||||
|
||||
}
|
||||
|
||||
pthread_mutex_unlock(&jobqueue_p->rwmutex);
|
||||
return job_p;
|
||||
}
|
||||
|
||||
|
||||
/* Free all queue resources back to the system */
|
||||
static void jobqueue_destroy(jobqueue* jobqueue_p){
|
||||
jobqueue_clear(jobqueue_p);
|
||||
free(jobqueue_p->has_jobs);
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
/* ======================== SYNCHRONISATION ========================= */
|
||||
|
||||
|
||||
/* Init semaphore to 1 or 0 */
|
||||
static void bsem_init(bsem *bsem_p, int value) {
|
||||
if (value < 0 || value > 1) {
|
||||
err("bsem_init(): Binary semaphore can take only values 1 or 0");
|
||||
exit(1);
|
||||
}
|
||||
pthread_mutex_init(&(bsem_p->mutex), NULL);
|
||||
pthread_cond_init(&(bsem_p->cond), NULL);
|
||||
bsem_p->v = value;
|
||||
}
|
||||
|
||||
|
||||
/* Reset semaphore to 0 */
|
||||
static void bsem_reset(bsem *bsem_p) {
|
||||
bsem_init(bsem_p, 0);
|
||||
}
|
||||
|
||||
|
||||
/* Post to at least one thread */
|
||||
static void bsem_post(bsem *bsem_p) {
|
||||
pthread_mutex_lock(&bsem_p->mutex);
|
||||
bsem_p->v = 1;
|
||||
pthread_cond_signal(&bsem_p->cond);
|
||||
pthread_mutex_unlock(&bsem_p->mutex);
|
||||
}
|
||||
|
||||
|
||||
/* Post to all threads */
|
||||
static void bsem_post_all(bsem *bsem_p) {
|
||||
pthread_mutex_lock(&bsem_p->mutex);
|
||||
bsem_p->v = 1;
|
||||
pthread_cond_broadcast(&bsem_p->cond);
|
||||
pthread_mutex_unlock(&bsem_p->mutex);
|
||||
}
|
||||
|
||||
|
||||
/* Wait on semaphore until semaphore has value 0 */
|
||||
static void bsem_wait(bsem* bsem_p) {
|
||||
pthread_mutex_lock(&bsem_p->mutex);
|
||||
while (bsem_p->v != 1) {
|
||||
pthread_cond_wait(&bsem_p->cond, &bsem_p->mutex);
|
||||
}
|
||||
bsem_p->v = 0;
|
||||
pthread_mutex_unlock(&bsem_p->mutex);
|
||||
}
|
|
@ -280,13 +280,18 @@ int yamux_decode(void* context, const uint8_t* incoming, size_t incoming_size, s
|
|||
memcpy(msg->data, &incoming[sizeof(struct yamux_frame)], msg->data_size);
|
||||
}
|
||||
|
||||
// if we didn't initiate it, add this new channel (odd stream id is from client, even is from server)
|
||||
if ( (f.streamid % 2 == 0 && yamuxContext->am_server) || (f.streamid % 2 == 1 && yamuxContext->am_server) ) {
|
||||
struct Stream* yamuxChannelStream = yamux_channel_new(yamuxContext, f.streamid, msg);
|
||||
if (yamuxChannelStream == NULL)
|
||||
return -EPROTO;
|
||||
struct YamuxChannelContext* channelContext = (struct YamuxChannelContext*)yamuxChannelStream->stream_context;
|
||||
|
||||
if (yamux_session->new_stream_fn)
|
||||
yamux_session->new_stream_fn(yamuxContext, yamuxContext->stream, msg);
|
||||
|
||||
channelContext->state = yamux_stream_syn_recv;
|
||||
}
|
||||
*return_message = msg;
|
||||
}
|
||||
else
|
||||
|
|
|
@ -272,6 +272,24 @@ int libp2p_yamux_write(void* stream_context, struct StreamMessage* message) {
|
|||
return retVal;
|
||||
}
|
||||
|
||||
/***
|
||||
* Given a context, get the YamuxContext
|
||||
* @param stream_context a YamuxChannelContext or a YamuxContext
|
||||
* @returns the YamuxContext, or NULL on error
|
||||
*/
|
||||
struct YamuxContext* libp2p_yamux_get_context(void* stream_context) {
|
||||
char proto = ((uint8_t*)stream_context)[0];
|
||||
struct YamuxChannelContext* channel = NULL;
|
||||
struct YamuxContext* ctx = NULL;
|
||||
if (proto == YAMUX_CHANNEL_CONTEXT) {
|
||||
channel = (struct YamuxChannelContext*)stream_context;
|
||||
ctx = channel->yamux_context;
|
||||
} else if (proto == YAMUX_CONTEXT) {
|
||||
ctx = (struct YamuxContext*)stream_context;
|
||||
}
|
||||
return ctx;
|
||||
}
|
||||
|
||||
/***
|
||||
* Check to see if there is anything waiting on the network.
|
||||
* @param stream_context the YamuxContext
|
||||
|
@ -281,7 +299,7 @@ int libp2p_yamux_peek(void* stream_context) {
|
|||
if (stream_context == NULL)
|
||||
return -1;
|
||||
|
||||
struct YamuxContext* ctx = (struct YamuxContext*)stream_context;
|
||||
struct YamuxContext* ctx = libp2p_yamux_get_context(stream_context);
|
||||
struct Stream* parent_stream = ctx->stream->parent_stream;
|
||||
if (parent_stream == NULL)
|
||||
return -1;
|
||||
|
@ -289,10 +307,42 @@ int libp2p_yamux_peek(void* stream_context) {
|
|||
return parent_stream->peek(parent_stream->stream_context);
|
||||
}
|
||||
|
||||
/***
|
||||
* Read from the network, and place it in the buffer
|
||||
* NOTE: This may put something in the internal read buffer (i.e. buffer_size is too small)
|
||||
* @param stream_context the yamux context
|
||||
* @param buffer the buffer
|
||||
* @param buffer_size the size of the incoming buffer (max number of bytes to read)
|
||||
* @param timeout_secs timeout
|
||||
* @returns number of bytes read.
|
||||
*/
|
||||
int libp2p_yamux_read_raw(void* stream_context, uint8_t* buffer, int buffer_size, int timeout_secs) {
|
||||
//TODO: Implement
|
||||
if (stream_context == NULL) {
|
||||
return -1;
|
||||
}
|
||||
struct YamuxContext* ctx = libp2p_yamux_get_context(stream_context);
|
||||
if (ctx->buffered_message_pos == -1) {
|
||||
// we need to get info from the network
|
||||
if (!ctx->stream->read(ctx->stream->stream_context, &ctx->buffered_message, timeout_secs)) {
|
||||
return -1;
|
||||
}
|
||||
ctx->buffered_message_pos = 0;
|
||||
}
|
||||
// max_to_read is the lesser of bytes read or buffer_size
|
||||
int max_to_read = (buffer_size > ctx->buffered_message->data_size ? ctx->buffered_message->data_size : buffer_size);
|
||||
memcpy(buffer, &ctx->buffered_message->data[ctx->buffered_message_pos], max_to_read);
|
||||
ctx->buffered_message_pos += max_to_read;
|
||||
if (ctx->buffered_message_pos == ctx->buffered_message->data_size) {
|
||||
// we read everything
|
||||
libp2p_stream_message_free(ctx->buffered_message);
|
||||
ctx->buffered_message = NULL;
|
||||
ctx->buffered_message_pos = -1;
|
||||
} else {
|
||||
// we didn't read everything.
|
||||
ctx->buffered_message_pos = max_to_read;
|
||||
}
|
||||
return max_to_read;
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a new YamuxContext struct
|
||||
|
@ -308,11 +358,14 @@ struct YamuxContext* libp2p_yamux_context_new(struct Stream* stream) {
|
|||
ctx->session = yamux_session_new(NULL, stream, yamux_session_server, NULL);
|
||||
ctx->am_server = 0;
|
||||
ctx->state = 0;
|
||||
ctx->buffered_message = NULL;
|
||||
ctx->buffered_message_pos = -1;
|
||||
ctx->protocol_handlers = NULL;
|
||||
}
|
||||
return ctx;
|
||||
}
|
||||
|
||||
int libp2p_yamux_negotiate(struct YamuxContext* ctx) {
|
||||
int libp2p_yamux_negotiate(struct YamuxContext* ctx, int am_server) {
|
||||
const char* protocolID = "/yamux/1.0.0\n";
|
||||
struct StreamMessage outgoing;
|
||||
struct StreamMessage* results = NULL;
|
||||
|
@ -320,7 +373,8 @@ int libp2p_yamux_negotiate(struct YamuxContext* ctx) {
|
|||
int haveTheirs = 0;
|
||||
int peek_result = 0;
|
||||
|
||||
// see if they're trying to send something first
|
||||
// see if they're trying to send something first (only if we're the client)
|
||||
if (!am_server) {
|
||||
peek_result = libp2p_yamux_peek(ctx);
|
||||
if (peek_result > 0) {
|
||||
libp2p_logger_debug("yamux", "There is %d bytes waiting for us. Perhaps it is the yamux header we're expecting.\n", peek_result);
|
||||
|
@ -338,6 +392,7 @@ int libp2p_yamux_negotiate(struct YamuxContext* ctx) {
|
|||
results = NULL;
|
||||
haveTheirs = 1;
|
||||
}
|
||||
}
|
||||
|
||||
// send the protocol id
|
||||
outgoing.data = (uint8_t*)protocolID;
|
||||
|
@ -348,7 +403,7 @@ int libp2p_yamux_negotiate(struct YamuxContext* ctx) {
|
|||
}
|
||||
|
||||
// wait for them to send the protocol id back
|
||||
if (!haveTheirs) {
|
||||
if (!am_server && !haveTheirs) {
|
||||
// expect the same back
|
||||
ctx->stream->parent_stream->read(ctx->stream->parent_stream->stream_context, &results, yamux_default_timeout);
|
||||
if (results == NULL || results->data_size == 0) {
|
||||
|
@ -430,7 +485,7 @@ struct Stream* libp2p_yamux_stream_new(struct Stream* parent_stream, int am_serv
|
|||
ctx->am_server = am_server;
|
||||
ctx->protocol_handlers = protocol_handlers;
|
||||
// attempt to negotiate yamux protocol
|
||||
if (!libp2p_yamux_negotiate(ctx)) {
|
||||
if (!libp2p_yamux_negotiate(ctx, am_server)) {
|
||||
libp2p_yamux_stream_free(out);
|
||||
return NULL;
|
||||
}
|
||||
|
@ -463,6 +518,10 @@ int libp2p_yamux_channel_close(void* context) {
|
|||
void libp2p_yamux_context_free(struct YamuxContext* ctx) {
|
||||
if (ctx == NULL)
|
||||
return;
|
||||
if (ctx->buffered_message != NULL) {
|
||||
libp2p_stream_message_free(ctx->buffered_message);
|
||||
ctx->buffered_message = NULL;
|
||||
}
|
||||
// free all the channels
|
||||
if (ctx->channels) {
|
||||
for(int i = 0; i < ctx->channels->total; i++) {
|
||||
|
|
Loading…
Reference in a new issue